Event loading drives distribution of the organochlorine pesticide metabolite DDE in a sub-tropical river system, Brisbane River, Australia.
Brisbane River
DDT, DDE and DDD
Floods
Legacy
Journal
Marine pollution bulletin
ISSN: 1879-3363
Titre abrégé: Mar Pollut Bull
Pays: England
ID NLM: 0260231
Informations de publication
Date de publication:
Sep 2021
Sep 2021
Historique:
received:
31
01
2021
revised:
20
06
2021
accepted:
22
06
2021
pubmed:
4
7
2021
medline:
13
8
2021
entrez:
3
7
2021
Statut:
ppublish
Résumé
Past catchment practices can contribute to environmental impacts for decades following their cessation. We examine the distribution of the prevalent organochlorine pesticide, dichlorodiphenyltrichloroethane (DDT) and its metabolites (DDE, DDD) in the sediments of a sub-tropical river system (Brisbane River, Australia). This study aimed to identify sources of DDT, DDE, DDD into the lower reaches of the Brisbane River. Annual sediment sampling of the lower Brisbane River over a period of 15 years (2001-2015) revealed a significant increase in sediment DDT, DDE and DDD content following major floods. A regional survey detected elevated sediment DDT, DDE and DDD content at 32 of 79 sites sampled; however, these were generally below guideline trigger values. DDE was the sole fraction at all but one site with creek systems dominated by intensive cropping practices identified as legacy sources and major flood events as a driver of elevated sediment DDE content in the lower reaches.
Identifiants
pubmed: 34217054
pii: S0025-326X(21)00705-0
doi: 10.1016/j.marpolbul.2021.112671
pii:
doi:
Substances chimiques
Hydrocarbons, Chlorinated
0
Pesticides
0
Water Pollutants, Chemical
0
Dichlorodiphenyl Dichloroethylene
4M7FS82U08
DDT
CIW5S16655
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
112671Informations de copyright
Copyright © 2021 Elsevier Ltd. All rights reserved.