Phenoxyacid Herbicides in Stormwater Retention Ponds: Urban Inputs

Autor:	Kevin Starks, Michele L. Etter, Katherine Buehler, Renata Raina, Ywomo Yowin
Rok vydání:	2011
Předmět:	Mecoprop Psychiatry and Mental health chemistry.chemical_compound chemistry Retention basin Environmental chemistry Aquatic ecosystem Stormwater Environmental science Environmental pollution Water quality Surface runoff Surface water
Zdroj:	American Journal of Analytical Chemistry. :962-970
ISSN:	2156-8278 2156-8251
DOI:	10.4236/ajac.2011.28112
Popis:	Surface water runoff from urban centers is a major source of environmental pollution which impacts water quality in downstream aquatic habitats. Phenoxyacid herbicides are some of the most widely globally used herbicides in agriculture and urban environments for weed control. Their transformation products which in- clude chlorophenols can be more toxic than the active ingredients. We used LC/MS/MS to analyzed simul- taneously these acid herbicides and their transformation products in stormwater retention ponds taken from an urban environment to examine the occurrence and potential release of these herbicides from urban inputs into downstream waters. 2,4-dichlorophenoxyacetic acid and mecoprop were detected in all samples col- lected from the ponds and at the highest concentrations, while 2-methyl-4-chlorophenoxyacetic acid was de- tected only in spring and summer. Two transformation products, 4-chloro-2-methylphenol and 2,4-di- chlorophenol were detected in samples primarily at inlet locations on the ponds indicating that degradation had occurred in surface soils prior to surface water runoff.
Databáze:	OpenAIRE
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