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Filling the knowledge gap: A suspect screening study for 1310 potentially persistent and mobile chemicals with SFC- and HILIC-HRMS in two German river systems
- Source :
- Water Research. 204:117645
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- Persistent and mobile chemicals (PM chemicals) were searched for in surface waters by hydrophilic interaction liquid chromatography (HILIC) and supercritical fluid chromatography (SFC), both coupled to high resolution mass spectrometry (HRMS). A suspect screening was performed using a newly compiled list of 1310 potential PM chemicals to the data of 11 surface water samples from two river systems. In total, 64 compounds were identified by this approach. The overlap between HILIC- and SFC-HRMS was limited (31 compounds), confirming the complementarity of the two methods used. The identified PM candidates are characterized by a high polarity (median logD -0.4 at pH 7.5), a low molecular weight (median 187 g/mol), are mostly ionic (54 compounds) and contain a large number of heteroatoms (one per four carbons on average). Among the most frequently detected novel or yet scarcely investigated water contaminants were cyanoguanidine (11/11 samples), adamantan-1-amine (10/11), trifluoromethanesulfonate (9/11), 2-acrylamido-2-methylpropanesulfonate (10/11), and the inorganic anions hexafluorophosphate (11/11) and tetrafluoroborate (10/11). 31% of the identified suspects are mainly used in ionic liquids, a chemically diverse group of industrial chemicals with numerous applications that is so far rarely studied for their occurrence in the environment. Prioritization of the findings of PM candidates is hampered by the apparent lack of toxicity data. Hence, precautionary principles and minimization approaches should be applied for the risk assessment and risk management of these substances. The large share of novel water contaminants among these findings of the suspect screening indicates that the universe of PM chemicals present in the environment has so far only scarcely been explored. Dedicated analytical methods and screening lists appear essential to close the analytical gap for PM compounds.
- Subjects :
- Prioritization
Environmental Engineering
Chromatography
business.industry
Ecological Modeling
Hydrophilic interaction chromatography
Chromatography, Supercritical Fluid
Chemical industry
Pollution
Mass Spectrometry
chemistry.chemical_compound
Rivers
chemistry
Liquid chromatography–mass spectrometry
Ionic liquid
Supercritical fluid chromatography
business
Hydrophobic and Hydrophilic Interactions
Waste Management and Disposal
Surface water
Screening study
Chromatography, Liquid
Water Science and Technology
Civil and Structural Engineering
Subjects
Details
- ISSN :
- 00431354
- Volume :
- 204
- Database :
- OpenAIRE
- Journal :
- Water Research
- Accession number :
- edsair.doi.dedup.....3d250371d8484f6270b7424d045f6ce2