Occurrence, distribution, and seasonality of emerging contaminants in urban watersheds

Chemosphere
Xuelian BaiDavid Nguyen

Abstract

The widespread occurrence of natural and synthetic organic chemicals in surface waters can cause ecological risks and human health concerns. This study measured a suite of contaminants of emerging concern (CECs) in water samples collected by the U.S. Environmental Protection Agency Region 8 around the Denver, Colorado, metropolitan area. The results showed that 109 of 144 analyzed pharmaceutical compounds, 42 of 55 analyzed waste-indicator compounds (e.g., flame retardants, hormones, and personal care products), and 39 of 72 analyzed pesticides were detected in the water samples collected monthly between April and November in both 2014 and 2015. Pharmaceutical compounds were most abundant in the surface waters and their median concentrations were measured up to a few hundred nanograms per liter. The CEC concentrations varied depending on sampling locations and seasons. The primary source of CECs was speculated to be wastewater effluent. The CEC concentrations were correlated to streamflow volume and showed significant seasonal effects. The CECs were less persistent during spring runoff season compared with baseflow season at most sampling sites. These results are useful for providing baseline data for surface CEC monitoring and...Continue Reading

Citations

Nov 6, 2018·Environmental Science and Pollution Research International·Xuelian Bai, Kumud Acharya
Apr 4, 2019·Journal of Water and Health·Glaucia Ghesti Pivetta, Maria do Carmo Cauduro Gastaldini
Nov 21, 2019·Applied Microbiology and Biotechnology·Camila Senna PereiraHugo Moreira Soares
Feb 10, 2021·Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes·Stéphanie PielEstelle Baurès
Feb 13, 2021·The Science of the Total Environment·Alan RempelLuciane Maria Colla
Mar 16, 2021·The Science of the Total Environment·Joseph L ServadioTiffany M Wolf
Mar 20, 2021·The Science of the Total Environment·Jesús Daniel Cardoso-VeraLeobardo Manuel Gómez-Oliván
Apr 6, 2019·Journal of Hazardous Materials·Eryn K MatichG Ekin Atilla-Gokcumen
Sep 2, 2020·The Science of the Total Environment·Xuelian Bai, Yeongkwon Son
Jun 30, 2021·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Sumaiya Saifur, Courtney M Gardner
Dec 2, 2021·Integrated Environmental Assessment and Management·Sarah M ElliottHeiko L Schoenfuss
Jan 7, 2022·Comparative Biochemistry and Physiology. Toxicology & Pharmacology : CBP·Jesús Daniel Cardoso-VeraNely SanJuan-Reyes

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