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- Title
Occurrence and Distribution of Carbamate Pesticides and Metalaxyl in Southern Ontario Surface Waters 2007-2010.
- Authors
Struger, John; Grabuski, Josey; Cagampan, Steve; Sverko, Ed; Marvin, Chris
- Abstract
Surface water sampling in 2007-2010 measured the occurrence of carbamates and metalaxyl during base flow conditions and wet weather events in southern Ontario surface waters. Carbaryl, metalaxyl and pirimicarb were the most frequently detected compounds. In 2008 these three compounds were detected in over 50 % of the samples. Overall mean concentrations of carbaryl and metalaxyl over the course of the study (2007-2010) were 15 and 18 ng/L, respectively. Elevated concentrations of carbaryl (~100 to ~950 ng/L) appeared associated with wet weather (high flow) events, while highest concentrations of metalaxyl (~20-1330 ng/L) were correlated with base flow conditions. We attributed these observations as the result of runoff of carbaryl from the watershed during rain events, while metalaxyl contamination may have resulted primarily from spray drift.
- Subjects
CARBAMATES; METALAXYL; FUNGICIDES; CARBARYL; WATERSHEDS; SPRAY droplet drift
- Publication
Bulletin of Environmental Contamination & Toxicology, 2016, Vol 96, Issue 4, p423
- ISSN
0007-4861
- Publication type
Article
- DOI
10.1007/s00128-015-1719-x