Combining Passive Sampling with Suspect and Nontarget Screening to Characterize Organic Micropollutants in Streams Draining Mixed-Use Watersheds
Open Access
- 4 November 2022
- journal article
- research article
- Published by American Chemical Society (ACS) in Environmental Science & Technology
- Vol. 56 (23), 16726-16736
- https://doi.org/10.1021/acs.est.2c02938
Abstract
Organic micropollutants (OMPs) represent an anthropogenic stressor on stream ecosystems. In this work, we combined passive sampling with suspect and nontarget screening enabled by liquid chromatography-high-resolution mass spectrometry to characterize complex mixtures of OMPs in streams draining mixed-use watersheds. Suspect screening identified 122 unique OMPs for target quantification in polar organic chemical integrative samplers (POCIS) and grab samples collected from 20 stream sites in upstate New York over two sampling seasons. Hierarchical clustering established the co-occurrence profiles of OMPs in connection with watershed attributes indicative of anthropogenic influences. Nontarget screening leveraging the time-integrative nature of POCIS and the cross-site variability in watershed attributes prioritized and confirmed 11 additional compounds that were ubiquitously present in monitored streams. Field sampling rates for 37 OMPs that simultaneously occurred in POCIS and grab samples spanned the range of 0.02 to 0.22 L/d with a median value of 0.07 L/d. Comparative analyses of the daily average loads, cumulative exposure-activity ratios, and multi-substance potentially affected fractions supported the feasibility of complementing grab sampling with POCIS for OMP load estimation and screening-level risk assessments. Overall, this work demonstrated a multi-watershed sampling and screening approach that can be adapted to assess OMP contamination in streams across landscapes.Keywords
Funding Information
- National Institute of Food and Agriculture (2018-67019-27793)
This publication has 76 references indexed in Scilit:
- How to Characterize Chemical Exposure to Predict Ecologic Effects on Aquatic Communities?Environmental Science & Technology, 2013
- Bioassay of estrogenicity and chemical analyses of estrogens in streams across the United States associated with livestock operationsWater Research, 2013
- Calibration and use of the polar organic chemical integrative sampler—a critical reviewEnvironmental Toxicology and Chemistry, 2012
- Predictive Environmental Risk Assessment of Chemical Mixtures: A Conceptual FrameworkEnvironmental Science & Technology, 2012
- Quaternary Ammonium Compounds in Urban Estuarine Sediment Environments - A Class of Contaminants in Need of Increased Attention?Environmental Science & Technology, 2010
- Mechanisms of biodegradation of dibenzoate plasticizersChemosphere, 2009
- Determination of selected quaternary ammonium compounds by liquid chromatography with mass spectrometry. Part II. Application to sediment and sludge samples in AustriaEnvironmental Pollution, 2007
- Determination of selected quaternary ammonium compounds by liquid chromatography with mass spectrometry. Part I. Application to surface, waste and indirect discharge water samples in AustriaEnvironmental Pollution, 2007
- Chapter 7 Theory, modelling and calibration of passive samplers used in water monitoringPublished by Elsevier BV ,2007
- Development of a passive, in situ, integrative sampler for hydrophilic organic contaminants in aquatic environmentsEnvironmental Toxicology and Chemistry, 2004