Publications by authors named "Steve J Cagampan"
Introduction: Public and scientific concern has grown over the last decade in Canada over the cosmetic use of pesticides in urban centers. With this in mind, a national survey was designed to monitor eight commonly used herbicides in urban rivers and streams across Canada.
Materials And Methods: To coordinate sample collections across the country, samples were collected monthly on one of two predetermined dates from April to September, 2007 from 19 sites within 16 watersheds, including 15 sites downstream of urban lands and two reference sites.
Article Synopsis
- The study examined concentrations of herbicides mecospop, dichlorprop, and metolachlor in Ontario streams during 2006-2007 and compared them to data from 2003-2004.
- Median levels of dichlorprop and metolachlor remained stable, but mecoprop concentrations increased in the later study.
- The findings regarding enantiomer signatures suggest that higher concentration samples showed more active forms of mecoprop, while lower concentrations indicated a mix of degradation processes affecting metolachlor.
Concentrations of mecoprop, dichlorprop, and metolachlor were investigated in 393 samples from Ontario streams in 2003-2004. Maximum concentrations of mecoprop, dichlorprop, and metolachlor were 1900, 6.62, and 1560 ng L(-1), respectively in 2003, and 103,000, 110, and 5290 ng L(-1), respectively, in 2004.
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