Environmental concentrations of agricultural herbicides in Saskatchewan, Canada: bromoxynil, dicamba, diclofop, MCPA, and trifluralin

Journal of Environmental Quality
D T WaiteA D Snihura

Abstract

Herbicides are the most commonly used group of agricultural pesticides on the Canadian Prairies and, in 1990, more than 20000 Mg of herbicides were applied in the provinces of Alberta, Saskatchewan, and Manitoba. The present paper reports on environmental concentrations of five herbicides currently used in the prairie region. The herbicides bromoxynil [3,5-dibromo-4-hydroxy-benzonitrile], dicamba [3,6-dichloro-o-anisic acid], diclofop [(RS)-2-[4-(2,4-dichlorophenoxy)-phenoxy]propanoic acid], MCPA [(4-chloro-2-methylphenoxy)acetic acid], and trifluralin [alpha,alpha,alpha-trifluoro-2,6-dinitro-N,N-isopropyl-p-toluidine] were measured in the atmosphere, bulk atmospheric deposits, surface film, and dugout (pond) water at two sites near Regina, Saskatchewan, during 1989 and 1990. All five herbicides were detected in air and surface film and all but trifluralin were detected in the bulk atmospheric deposits and dugout water. Trifluralin was most frequently detected in air (79% of samples) whereas bromoxynil was present in maximum concentration (4.2 ng m(-3)). MCPA was present in maximum levels in bulk atmospheric (wet plus dry) deposits (2350 ng m(-2) d(-1)), surface film (390 ng m(-2)), and dugout water (330 ng L(-1)), whereas dica...Continue Reading

References

May 1, 1988·Bulletin of Environmental Contamination and Toxicology·R GroverS U Khan
Jan 1, 1997·Reviews of Environmental Contamination and Toxicology·R GroverH B Schiefer
Feb 18, 2004·Journal of Environmental Quality·Allan J Cessna, Jane A Elliott

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Citations

Apr 15, 2010·Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes·Dani DegenhardtAnnemieke Farenhorst
Dec 5, 2008·Environmental Science and Pollution Research International·Xiyun CaiWeiping Liu
May 16, 2013·Journal of Environmental Quality·Allan J CessnaJane A Elliott
Oct 8, 2019·Journal of Environmental Quality·Kimberley D SchneiderD Keith Reid
Mar 17, 2007·Journal of Toxicology and Environmental Health. Part a·Karen M SemchukDonald G Irvine
May 9, 2012·Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes·Dani DegenhardtDan J Pennock
Sep 17, 2019·Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes·Yuqing ShenJing Liu
Aug 1, 2012·The Science of the Total Environment·Srinivas SuraAnnemieke Farenhorst

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