Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.1021/acs.est.2c05784
Lizenz creative commons licence
Titel (primär) Contamination pattern and risk assessment of polar compounds in snow melt: an integrative proxy of road runoffs
Autor Maurer, L.; Carmona, E. ORCID logo ; Machate, O.; Schulze, T. ORCID logo ; Krauss, M. ORCID logo ; Brack, W.
Quelle Environmental Science & Technology
Erscheinungsjahr 2023
Department WANA
Band/Volume 57
Heft 10
Seite von 4143
Seite bis 4152
Sprache englisch
Topic T9 Healthy Planet
Keywords chemicals of emerging concern (CECs); liquid chromatography high resolution mass spectrometry (LC-HRMS); snow melt; urban road runoffs; risk assessment; tire wear compounds; pesticides; pattern analysis
Abstract To assess the contamination and potential risk of snow melt with polar compounds, road and background snow was sampled during a melting event at 23 sites at the city of Leipzig and screened for 489 chemicals using liquid chromatography high-resolution mass spectrometry with target screening. Additionally, six 24 h composite samples were taken from the influent and effluent of the Leipzig wastewater treatment plant (WWTP) during the snow melt event. 207 compounds were at least detected once (concentrations between 0.80 ng/L and 75 μg/L). Consistent patterns of traffic-related compounds dominated the chemical profile (58 compounds in concentrations from 1.3 ng/L to 75 μg/L) and among them were 2-benzothiazole sulfonic acid and 1-cyclohexyl-3-phenylurea from tire wear and denatonium used as a bittern in vehicle fluids. Besides, the analysis unveiled the presence of the rubber additive 6-PPD and its transformation product N-(1.3-dimethylbutyl)-N′-phenyl-p-phenylenediamine quinone (6-PPDQ) at concentrations known to cause acute toxicity in sensitive fish species. The analysis also detected 149 other compounds such as food additives, pharmaceuticals, and pesticides. Several biocides were identified as major risk contributors, with a more site-specific occurrence, to acute toxic risks to algae (five samples) and invertebrates (six samples). Ametryn, flumioxazin, and 1,2-cyclohexane dicarboxylic acid diisononyl ester are the main compounds contributing to toxic risk for algae, while etofenprox and bendiocarb are found as the main contributors for crustacean risk. Correlations between concentrations in the WWTP influent and flow rate allowed us to discriminate compounds with snow melt and urban runoff as major sources from other compounds with other dominant sources. Removal rates in the WWTP showed that some traffic-related compounds were largely eliminated (removal rate higher than 80%) during wastewater treatment and among them was 6-PPDQ, while others persisted in the WWTP.
dauerhafte UFZ-Verlinkung
Maurer, L., Carmona, E., Machate, O., Schulze, T., Krauss, M., Brack, W. (2023):
Contamination pattern and risk assessment of polar compounds in snow melt: an integrative proxy of road runoffs
Environ. Sci. Technol. 57 (10), 4143 - 4152 10.1021/acs.est.2c05784