Biocides in the Yangtze River of China: spatiotemporal distribution, mass load and risk assessment.
Environ Pollut
; 200: 53-63, 2015 May.
Article
em En
| MEDLINE
| ID: mdl-25697474
ABSTRACT
Nineteen biocides were investigated in the Yangtze River to understand their spatiotemporal distribution, mass loads and ecological risks. Fourteen biocides were detected, with the highest concentrations up to 166 ng/L for DEET in surface water, and 54.3 ng/g dry weight (dw) for triclocarban in sediment. The dominant biocides were DEET and methylparaben, with their detection frequencies of 100% in both phases. An estimate of 152 t/y of 14 biocides was carried by the Yangtze River to the East China Sea. The distribution of biocides in the aquatic environments was significantly correlated to Gross Domestic Product (GDP), total phosphorus (TP) and total nitrogen (TN), suggesting dominant input sources from domestic wastewater of the cities along the river. Risk assessment showed high ecological risks posed by carbendazim in both phases and by triclosan in sediment. Therefore, proper measures should be taken to reduce the input of biocides into the river systems.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Poluentes Químicos da Água
/
Monitoramento Ambiental
/
Rios
/
Desinfetantes
Tipo de estudo:
Etiology_studies
/
Risk_factors_studies
País/Região como assunto:
Asia
Idioma:
En
Revista:
Environ Pollut
Ano de publicação:
2015
Tipo de documento:
Article