Postdoctoral Fellow Environmental Chemistry (Borch)

Link: https://jobs.colostate.edu/postings/157020


Position Details

Position LocationFort Collins, CO
Work LocationPosition is fully in-office/in-person
Research Professional PositionYes
Posting Number202500132AP
Position TypeAdmin Professional/ Research Professional
Classification TitlePostdoctoral Fellows
Work Hours/Week40
Proposed Annual Salary Range$60,000-$80,000 Salary depends on years of experience post-degree.
Employee BenefitsColorado State University is not just a workplace; it’s a thriving community that’s transforming lives and improving the human condition through world-class teaching, research, and service. With a robust benefits package, collaborative atmosphere, commitment to diversity, equity and inclusion, and focus on work-life balance, CSU is where you can thrive, grow, and make a lasting impact. Review our detailed benefits information here. Explore the additional perks of working at CSU here. For the total value of CSU benefits in addition to wages, use our compensation calculator. Lastly, click here for more information about why Fort Collins is consistently ranked in the top cities to live in!
Desired Start Date
Position End Date (if temporary)
To ensure full consideration, applications must be received by 11:59pm (MT) on02/24/2025 (Rolling applications, until a suitable candidate has been identified)
Description of Work UnitThe Department of Soil and Crop Sciences is focused on education, research, and outreach to solve the world’s most pressing food production issues and crucial matters about Earth, its ecosystems, and their services. Our faculty and staff apply research-based solutions to benefit Colorado and the world. We offer academic programs to prepare students to address national and global crop production, sustainability, and environmental quality challenges such as waste management, water quality, and reclamation of drastically disturbed lands. There are numerous opportunities for students to be involved in cutting edge research related to global food production and ecosystem function and protection.
Position SummaryThe post doctoral fellow will develop novel analytical methods for rapid contaminant and toxicity assessment of industrial wastewater. The postdoc will contribute to the design of a cutting-edge non-targeted analysis (NTA) and suspect screening analysis (SSA) methods using high-resolution mass spectrometry (HRMS) and computational tools to detect and identify unknown or suspected chemicals in raw and treated oil and gas (O&G) produced water (PW).The research will focus on developing a novel approach for non-targeted analysis of compounds in produced water using Solid Phase Microextraction (SPME) in combination with Liquid Chromatography (LC) and High-Resolution Mass Spectrometry (HRMS). SPME offers a rapid, solvent-free method for sample preparation, while LC-HRMS enables precise identification and structural elucidation of both known and unknown contaminants at trace levels. This integrated method will be applied to assess the risk of compounds in treated produced water, with a particular focus on evaluating the environmental toxicity of these compounds.The postdoc will use laboratory measurements (including Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS), LC-Q-TOF MS, LC-QqQ-MS/MS, GC-MS, and SPME) characterize variability of organic constituents in treated and raw PW across the Permian. This will include characterization of chemical classes, and some specific constituents of interest. The postdoc will investigate the potential for using SPME and LC retention times as an effective method for assessing the toxicity risks of compounds present in PW.This position is initially funded as part of a 2 year grant program.
Required Job QualificationsPh.D. in analytical chemistry, environmental chemistry, environmental engineering, environmental science or a related field by start of employment. Experience in mass spectrometry analysis, data processing, and/or interpretation. Experience in liquid- and gas chromatography. Relevant laboratory experience. The successful candidate must be legally authorized to work in the United States by the proposed start date; the department will not provide visa sponsorship for this position.
Preferred Job QualificationsFourier transform ion cyclotron resonance mass spectrometry Proficiency in R, python, Matlab, or equivalent software for efficient data handling and organization. Expertise in Solid Phase Microextraction (SPME). Familiarity with manipulative experiments. Capabilities for teamwork and independent work. Environmental toxicology. Proficiency in handling moderate-to-large datasets and applying statistical analyses.

Essential Duties

Job Duty CategoryResearch
Duty/ResponsibilityDevelop non-targeted analysis methods for characterization of compounds in produced water using SPME in combination with LC and HRMS. Develop and pursue innovative techniques related to detection of water contaminants by mass spectrometry. Sample raw and treated produced water as well as “uncontaminated” environmental samples such as upstream river water and wetlands. Determine quantitative and qualitative variability in contaminant classes in produced water and natural environments. Develop database with produced water compounds and biomarkers Set up, operate, and maintain laboratory instruments. Mentor students in the lab setting
Percentage Of Time70
Job Duty CategoryAuthorship and Grant Proposal Submission
Duty/ResponsibilityCommunicate research outcomes in scientific publications and presentations. Contribute to the development of grant proposals and progress reports.
Percentage Of Time30

Application Details

Special Instructions to ApplicantsTo apply, please upload a cover letter that addresses the required and preferred job qualifications, a CV, an unofficial transcript, and the contact information for three professional references. Applications will be accepted until the position is filled, but for full consideration please apply by February 24, 2025.CSU is committed to full inclusion of qualified individuals. If you are needing assistance or accommodations with the search process, please reach out to the listed search contact.References will not be contacted without prior notification to candidates. Please note, applicants may redact information from their application materials that identifies their age, date of birth, or dates of attendance at or graduation from an educational institution.
Conditions of EmploymentPre-employment Criminal Background Check (required for new hires)
Search ContactThomas Borch, Thomas.Borch@colostate.edu
EEOColorado State University is committed to providing an environment that is free from discrimination and harassment based on race, age, creed, color, religion, national origin or ancestry, sex, gender, disability, veteran status, genetic information, sexual orientation, gender identity/expression, or pregnancy in its employment, programs, services and activities, and admissions, and, in certain circumstances, marriage to a co-worker. The University will not discharge or in any other manner discriminate against employees or applicants because they have inquired about, discussed, or disclosed their own pay or the pay of another employee or applicant. Colorado State University is an equal opportunity and equal access institution and affirmative action employer fully committed to achieving a diverse workforce and complies with all Federal and Colorado State laws, regulations, and executive orders regarding non-discrimination and affirmative action. The Office of Equal Opportunity is located in 101 Student Services.The Title IX Coordinator is the Director of the Office of Title IX Programs and Gender Equity, 123 Student Services Building, Fort Collins, CO 80523-0160, (970) 491-1715, titleix@colostate.edu.The Section 504 and ADA Coordinator is the Director of the Office of Equal Opportunity, 101 Student Services Building, Fort Collins, CO 80523-0160, (970) 491-5836, oeo@colostate.edu.The Coordinator for any other forms of misconduct prohibited by the University’s Policy on Discrimination and Harassment is the Vice President for Equity, Equal Opportunity and Title IX, 101 Student Services Building, Fort Collins, Co. 80523-0160, (970) 491-5836, oeo@colostate.edu.Any person may report sex discrimination under Title IX to the Office of Civil Rights, Department of Education.
Background Check Policy StatementColorado State University strives to provide a safe study, work, and living environment for its faculty, staff, volunteers and students. To support this environment and comply with applicable laws and regulations, CSU conducts background checks for the finalist before a final offer. The type of background check conducted varies by position and can include, but is not limited to, criminal history, sex offender registry, motor vehicle history, financial history, and/or education verification. Background checks will also be conducted when required by law or contract and when, in the discretion of the University, it is reasonable and prudent to do so.

References Requested

Minimum Requested3
Maximum Requested3

Applicant Documents

Required Documents

  1. Cover Letter
  2. Curriculum Vitae
  3. Unofficial Transcripts

Call for Abstracts – Internation Conference on Non-Target Screening 2025

Non-target screening and its applications are the focus of an INTERNATIONAL CONFERENCE from October 13-16th, 2025, held in Erding, Germany and online. NTS users from all over the world and vendors from the field of instrumental analysis will present their latest results and applications in keynote lectures, lecture sessions, and poster sessions.

Apply for an Oral or Poster Presentationuntil May 15th 2025 (late posters until August 31st 2025)
Templates for abstract submissions and further information are available at www.afin-ts.de/ICNTS25

Information regarding registration fees, early-bird registration, and accommodation is available, with early-bird fees open until June 15th.
For further details, please feel free to contact them via e-mail (education@afin-ts.de)

This conference will promote discussion on NTS main topics, such as:

  • NTS in Products of Daily Use
  • NTS in Health Care, Doping, and Forensics
  • NTS in Environmental Analysis
  • NTS in Food(omics)
  • NTS in Metabolomics
  • NTS in Process Monitoring
  • NTS in Commercial Solutions, Computational Mass Spectrometry
  • NTS with Quality Standards, Data Standardization, Harmonization and Reporting

February Meeting: Ben Place

Ben Place, a Research Chemist within the Organic Chemical Metrology Group at the National Institute of Standards and Technology (NIST), will be giving a talk on “The NIST Per- and Polyfluoroalkyl Substances Interlaboratory Study – Exercise 1”. In addition to his work at NIST, Ben is one of the founding chairs of BP4NTA and the current leader of the BP4NTA Study Planning Tool working group.

This meeting will occur on Tuesday, February 18th, from 12 pm – 1 pm EST.

Abstract: As HRMS-based non-targeted analysis (NTA) techniques advance and become more routine, there is a significant need by the research community to understand the interlaboratory comparability of NTA methods and results. As part of a US Department of Defense-funded effort, researchers at NIST designed an interlaboratory study focused on the identification of per- and polyfluoroalkyl substances (PFAS) in three prepared extract samples. Thirty-four laboratories with experience performing NTA were shipped the samples with a standard reporting form; 27 of the participating laboratories submitted data by the deadline. The initial interpretation of the results show that laboratories reported a wide range of PFAS identities across all three samples and a range of identification confidence (using the Charbonnet et al. PFAS confidence of identification scale). The presentation will cover the design of the study goals and samples, the administration and process of the interlaboratory study, and the results of the study, along with some lessons learned and potential future studies.

Click here to view the recording: BP4NTA Monthly Meeting-20250218_180754-Meeting Recording.mp4

The topics/speakers of the next three meetings will be:

March 18: BP4NTA working group updates

April 15: Jaanus Liigand, Quantem Analytics

May 20: Carsten Baessmann, Bruker Mass Spectrometry

New Publication – Filling the Gaps in PFAS Detection: Integrating GC-MS Non-Targeted Analysis for Comprehensive Environmental Monitoring and Exposure Assessment

The newest publication from our BP4NTA members highlights the untapped potential of gas chromatography–mass spectrometry (GC-MS) in non-targeted analysis (NTA) of PFAS. While LC-MS has dominated PFAS studies, these findings show that GC-MS covers a complementary chemical space, crucial for identifying novel and volatile/semi-volatile PFAS that LC-MS may miss.

✅ Less than 10% of known PFAS chemistry is predicted to be amenable to typical LC-MS analysis.
✅ GC-NTA is essential for uncovering unknown PFAS in waste streams, incineration byproducts, air emissions, and consumer products.
✅ Collaboration is needed to overcome challenges and advance GC-NTA in environmental research.

We call on researchers, grantors, and stakeholders to recognize and invest in GC-NTA as a critical tool for fully understanding PFAS contamination. Let’s push the boundaries of PFAS research together!

Read more here: https://pubs.acs.org/doi/10.1021/acs.estlett.4c00930

New Publication – Communicating with Stakeholders to Identify High-Impact Research Directions for Non-Targeted Analysis

Non-targeted analysis (NTA) using high-resolution mass spectrometry without defined chemical targets has the potential to expand and improve chemical monitoring in many fields. Despite rapid advancements within the research community, NTA methods and data remain underutilized by many potential beneficiaries. To better understand barriers toward widespread adoption, the Best Practices for Non-Targeted Analysis (BP4NTA) working group conducted focus group meetings and follow-up surveys with scientists (n = 61) from various sectors (e.g., drinking water utilities, epidemiologists, n = 9) where NTA is expected to provide future value. Meeting participants included producers and end-users of NTA data with a wide range of familiarity with NTA methods and outputs. Discussions focused on identifying specific barriers that limit adoption and on setting NTA product development priorities. Stated priorities fell into four major categories: 1) education and training materials; 2) QA/QC frameworks and study design guidance; 3) accessible compound databases and libraries; and 4) NTA data linkages with chemical fate and toxicity information. Based on participant feedback, this manuscript proposes research directions, such as standardization of training materials, that BP4NTA and other institutions can pursue to expand NTA use in various application scenarios and decision contexts.

Click here to access the paper: Communicating with Stakeholders to Identify High-Impact Research Directions for Non-Targeted Analysis.

Welcoming the BP4NTA Steering Committee for 2025! 

Great and exciting work lies in front of this highly motivated team. Visit the BP4NTA Steering Committee page to learn more about them! 

Chair – Sara Nason (Connecticut Agricultural Experiment Station)
Vice Chair – David Schiessel (BABCOCK Laboratories, Inc.) 
Outgoing Chair – James McCord (U.S. Environmental Protection Agency)
Secretary – Sonja Klee (Tofwerk AG)
Treasurer – Stephan Baumann (Agilent Technologies)
Technical Liason – Anna Robuck (U.S. Environmental Protection Agency)
Operational Liason – Gabby Black (U.S. Geological Survey)

January Meeting: Dr. Alexander Aksenov

Dr. Alexander Aksenov is an Assistant Professor at the University of Connecticut. His lab focuses on exploring the metabolome of living systems, focusing on the “dark matter” – the unknown unknowns of the system. For more information, please explore the lab’s website: https://aksenovgroup.chemistry.uconn.edu/

This meeting will occur on Tuesday, January 21st, from 12 pm – 1 pm EST.

Title: Illuminating the Dark Matter of Metabolomics Through Molecular Community Networking

Introduction: Molecular networking connects structurally similar metabolites by leveraging MS/MS fragmentation pattern similarities. This approach has enabled a slew of discoveries over the past decade. However, conventional methods rely on arbitrary global spectral similarity thresholds, despite optimal connectivity being molecule class-specific. We present molecular community networking (MCN), an advanced approach that utilizes unpruned full connectivity metabolite networks parsed using network science tools to identify naturally present “molecular communities.” This strategy preserves intra-community connectivity information and optimizes connectivity patterns for each metabolite class, enabling the rescue of lost relationships and the capture of otherwise “hidden” portions of the metabolome.


Methods: Full connectivity metabolite networks were constructed using LC-MS/MS or EI GC- MS data. The Louvain clustering algorithm was employed to identify naturally occurring “molecular communities” within the unpruned networks. Each community was treated as a separate network and pruned using the maximum weight spanning tree algorithm to preserve connectivity while retaining only the most meaningful information. The resulting MCNs represent partitions of the original networks into continua of molecular space, where connections within each molecular family cluster represent the most similar pairs of metabolites across the entire detected metabolome.


Preliminary Data: We validated MCNs using reference spectra and experimental data, demonstrating their ability to assemble molecular space into continua reflecting structural relationships. MCNs rescue lost connectivity between related molecules fractured by conventional networking, for example, link sodiated ion variants to corresponding protonated precursors. We showcase MCN’s utility in discovering new bile acid structures with dipeptide conjugation produced by human microbial cultures, revealing the metabolic capacity of the human microbiota. These molecules were previously undetectable with conventional networks. MCNs exhibit high modularity, suggesting a natural tendency for molecules to group into communities resembling “small-world” structures found in online social networks. This approach empowers molecular discovery in areas such as natural products research, including the reanalysis of existing data to explore previously unconnected molecules.

Click here if you’d like to access the recording: BP4NTA Monthly Meeting-20250121_183034-Meeting Recording.mp4

Mass Spectrum libraries: RECETOX Exposome HR-[EI+]-MS library (a collection of mostly anthropogenic compounds)
RECETOX Metabolome HR-[EI+]-MS library (a collection of mostly endogenous compounds from MetaSci Human Metabolite Library)

Remembering BP4NTA Member Kathy Peter

It is with great sadness that we share the news of Kathy Peter’s passing, ending her battle with stage 4 colon cancer.  Kathy was a driving force in founding BP4NTA, and contributed to the organization in numerous impactful ways, including:

  • Leading a sub-group to develop reference content regarding QA/QC and performance metrics for NTA; 
  • Co-leading a sub-group to develop and test the Study Reporting Tool, which is now being used by NTA researchers, journal reviewers, and editors in a variety of fields;  
  • Co-leading a BP4NTA committee to generate a manuscript and two videos demonstrating the utility of the Study Reporting Tool; 
  • Co-leading a sub-group to produce a manuscript and video detailing the current options for assessing NTA method performance; 
  • Giving numerous presentations on behalf of BP4NTA, including a keynote presentation regarding NTA performance assessments; 
  • Producing, updating, and maintaining informational content on the BP4NTA website; 
  • Contributing to the ongoing design and testing of the “Study Planning Tool”; 
  • Contributing to a manuscript proposing a tool for evaluating the chemical space covered by NTA methods;
  • Playing a pivotal role in generating BP4NTA’s non-profit Charter;
  • Continuously contributing innovative and practical suggestions to other committees and the BP4NTA leadership. 

Due to the breadth and quality of her contributions, Kathy was conferred the BP4NTA Outstanding Service Award in 2023. As its inaugural recipient, Kathy was given the opportunity to define the award criteria, including recipient qualifications and procedures for nominating and selecting subsequent candidates. The award reflects her vision of encouraging scientific service in the NTA community and has been renamed the “Katherine T. Peter BP4NTA Outstanding Service Award” in her honor. BP4NTA members paid tribute to Kathy and her impressive legacy in a moment of silence at the November meeting. Kathy was very invested in BP4NTA’s success and longevity and would want all of us to continue carrying the torch she lit.

Kathy is lovingly remembered by her husband, Jason, her son, Ollie, and countless BP4NTA members who were inspired by her leadership and drive. Kathy wrote about her experience with cancer in an effort to connect to both patients and providers, and was awarded an honorable mention in the Pulse writing contest, “On Being Different”. 

November Meeting: Dr. Zhenyu Tian

Dr. Zhenyu Tian is an assistant professor of chemistry and chemical biology at Northeastern University. His lab focuses on the identification and quantification of known and unknown contaminants in our environment to assess their risks to human health and the ecosystem.

This meeting will occur on Tuesday, November 19th, from 12 pm – 1 pm EST.

Title: Environmental non-targeted analysis: unveiling emerging contaminants in rubber, plastic, and surface water.

Abstract: In the Anthropocene, human beings are changing the earth chemically. Hundreds of thousands of synthetic chemicals are manufactured, and production numbers keep increasing. These chemicals don’t magically disappear, and many end up in environmental compartments such as soil, water, and air, becoming “emerging contaminants”. Our group focuses on chemical contaminants in crumb rubber from end-of-life tires, microplastics, and persistent and mobile organic contaminants in water. By developing new sample preparation and non-targeted analysis methods, we investigate the chemical profiles, transformation products, and environmental fate of these emerging contaminants. Our studies reveal complex mixtures of chemicals in artificial turf crumb rubber, develop novel “fingerprinting” methods for microplastic source tracking, and characterize previously unknown polar chemicals in water supplies. By combining laboratory experiments, environmental monitoring, and innovative data analysis approaches, we provide new insights into the occurrence, sources, and potential risks of these contaminants. The results will advance our understanding of emerging contaminants and inform improved water treatment technologies, support green chemistry initiatives, and enhance environmental management strategies.

Click here for the recording: BP4NTA Monthly Meeting-20241119_180011-Meeting Recording.mp4

Postdoctoral Fellowship – University of California, Berkeley School of Public Health and Department of Environmental Policy and Management and US EPA based in Research Triangle Park, NC

Do you want to work in a fast-paced environment with a multi-disciplinary group of researchers and community collaborators working at the nexus of environmental health science, community-based participatory research, and environmental justice?

The Sustainability and Health Equity (SHE) Lab at the University of California, Berkeley seeks highly motivated applicants for a postdoctoral position to work on a project applying analytical chemistry methods and novel computational and statistical techniques to analyze complex high resolution mass spectrometry data involving non-targeted chemical analysis to characterize the presence of environmental chemical exposures in drinking water samples. This exciting work will be guided by a team of multidisciplinary scientists in environmental health science, analytical chemistry, and computational methods at UC Berkeley, US EPA, UCLA, as well as the Community Water Center. The position will primarily be based at the US EPA’s research facilities in Research Triangle Park, North Carolina.

The SHE Lab is a multi-disciplinary and committed group of scientists, postdocs, graduate and undergraduate students, and community collaborators who advance scientific inquiry and knowledge, professional training, research translation, and environmental policies to reduce the impacts of toxic chemicals and other environmental hazards on human health. Based in the School of Public Health and the Department of Environmental Science, Policy, and Management, the SHE Lab investigates the health equity and environmental justice implications of a wide range of environmental health hazards, from toxic chemicals to climate change. We seek to advance scientific understanding of structural determinants of environmental health with a focus on inequality, racism, psychosocial stress and how these factors interact with environmental chemical exposures to produce health inequalities. We also mentor and promote early career scientists by supporting their training and enhancing their capacity to engage in environmental health research, policy, and education.

The SHE lab also collaborates with other scientists, communities, and regulators to develop science-policy tools for assessing the cumulative impacts of chemical and non-chemical stressors to improve regulatory decision-making and advance environmental justice. This work
has served as a foundation for Cal-EPA’s CalEnviroScreen, US EPA’s EJSCREEN, and the Biden Administration’s Climate and Economic Justice Screening Tool. Other tools include Toxic Tides, which projects sea-level rise flooding threats to hazardous sites in environmental justice
communities, and the Drinking Water Tool, which characterizes drinking water quality and access threats for communities relying on public water systems and domestic wells.

Some of our projects include:

  • Conducting community-driven water equity studies to reduce chemical contamination and improve community access to safe drinking water (UC Berkeley Superfund Research Center’s Water Equity Science Shop).
  • Examining the effects of prenatal chemical exposures (using targeted and non-targeted analytical techniques) and chronic social stressors on birth outcomes and infant development;
  • Conducting targeted and non-targeted human biomonitoring for potential breast carcinogens in women workers, including firefighters, office workers, nurses, hospital staff, and domestic workers (Women Worker Biomonitoring Collaborative).

The postdoc will be hired by UC Berkeley but spend the majority of their time working with EPA’s Office of Research and Development, Center for Computational Toxicology and Exposure (CCTE), Chemical Characterization Division. CCTE strives to utilize the latest advancements in analytical chemistry, toxicology, and informatics. As such, the postdoc will be expected to extract
samples, collect high resolution mass spectrometry data, process that data using advanced software or custom scripts, and integrate the results with chemical hazard profiles. The postdoc will be expected to present and publish findings.

Knowledge/Skills:
The ideal candidate will have a strong background in analytical chemistry, computational and statistical methods, environmental health, and cheminformatics. Excellent problem-solving skills, creative and interdisciplinary thinking, and the ability to learn and work with multiple software tools are required. Because the successful candidate will be undertaking lab work at US EPA in North Carolina applicants must be a US citizen.

The successful candidate must have:

  • PhD in epidemiology, biostatistics, analytical chemistry, computational informatics, environmental health science, cheminformatics, or other relevant environmental health or engineering related field.
  • Strong programming skills in R, Python, Stata and/or SAS or other relevant software.
  • Experience with mass spectrometry/metabolomics analysis and data processing.
  • Excellent oral and written communication skills
  • Track record of published or forthcoming peer-reviewed publications.

The postdoc will join an interdisciplinary group of scientists at UC Berkeley, US EPA, and UCLA. They will also interact with our collaborators at the Community Water Center, a community-based water justice organization supporting low-income communities of color struggling with drinking water quality and access challenges in California’s San Joaquin Valley and Central Coast regions. The Postdoctoral Scientist will be advised by and work closely with Drs. Rachel Morello-Frosch, Seth Newton (US EPA) and Lara Cushing (UCLA). The appointment is for two years. Start date is in the first quarter of 2025. The initial appointment will be at 100% time for two years with the possibility of extension based on satisfactory performance and availability of funding. The postdoc must complete a security background check in order to access EPA facilities.

Interested candidates should submit the following application materials to:
Lauren Baehner baehnerl@berkeley.edu
Seth Newton Newton.Seth@epa.gov

  1. a cover letter that includes a statement of relevant research experience and interests,
  2. a curriculum vita,
  3. pdf copies of a recent publication or writing sample,
  4. contact information of three references. Any solicited letters or references will be treated as confidential per University of California policy and California state law.

Specific questions regarding the recruitment can be directed to Lauren Baehner, Research Coordinator baehnel@berkeley.edu.

Salary and Benefits:
This position provides full benefits. Salary will be commensurate with qualifications and experience and will range from $70,000 plus benefits. The University of California is an Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, age or protected veteran status. For the complete University of California nondiscrimination and affirmative action policy see:
http://policy.ucop.edu/doc/4000376/NondiscrimAffirmAct