期刊
SCIENCE OF THE TOTAL ENVIRONMENT
卷 697, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.scitotenv.2019.134058
关键词
Emerging contaminants; High resolution mass spectrometry; Risk assessment; Laguna de Castillos; Laguna de Rocha
资金
- Agencia Nacional de Innovacion e Investigacion (ANII) [POS_NAC_2016_1_129862, MOV_CA_2017_1_137619]
- MINECO [CTQ 2015-71321P]
Emerging contaminants (ECs) such as pharmaceuticals, personal care products, drugs of abuse and polar pesticides are under particular attention due to their high consumption, frequent detection in the environment and reported ecotoxicological risk. This study investigates the occurrence and distribution of multiclass of ECs in surface waters at basin scale of two Atlantic coastal lagoons of Uruguay, South America. For this purpose, a target screening approach covering up to 362 compounds was employed using nanoflow liquid chromatography - high resolution mass spectrometry (nanoLC/HRMS). 56 compounds were identified including five banned pesticides in the European Union: atrazine, carbendazim, chlorpyrifos ethyl, diazinon, and ethion. Pharmaceuticals, hormones and drugs of abuse showed maximum detection frequencies and concentrations downstream cities. The highest occurrence of pesticides was found in lagoons and streams with neighboring agricultural activity. ECs were also found in coastal sea. Environmental risk assessment revealed that the hormones 17 alpha-ethinylestradiol and 17-beta-estradiol showed the highest risk to aquatic organisms in these basins. This study represents the first basin- scale monitoring of ECs in superficial waters encompassing streams, lagoons, and coastal seas in Uruguay, South America. (C) 2019 Elsevier B.V. All rights reserved.
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