HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Figures Only Full Text Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Related articles in JEQ Similar articles in this journal Similar articles in ISI Web of Science Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via ISI Web of Science (6) Citing Articles via Google Scholar Google Scholar Articles by Waite, D. T. Articles by Snihura, A. D. Search for Related Content PubMed PubMed Citation Articles by Waite, D. T. Articles by Snihura, A. D. Agricola Articles by Waite, D. T. Articles by Snihura, A. D. Related Collections Field-Scale Studies Pesticides Organic Compounds Agricultural Pesticides Air Pollution

TECHNICAL REPORTS

Atmospheric Pollutants and Trace Gases

Environmental Concentrations of Agricultural Herbicides in Saskatchewan, Canada

Bromoxynil, Dicamba, Diclofop, MCPA, and Trifluralin

^a Environment Canada, 300-2365 Albert Street, Regina, SK, Canada S4P 4K1
^b Research Centre, Agriculture and Agri-Food Canada, Lethbridge, AB, Canada T1J 4B1 (present address: National Water Research Institute, 11 Innovation Boulevard, Saskatoon, SK, Canada S7N 3H5)
^c Deceased (formerly at Research Station, Agriculture and Agri-Food Canada, Regina, SK, Canada)
^d Retired (formerly at Research Station, Agriculture and Agri-Food Canada, Regina, SK, Canada)
^e Faculty of Engineering, University of Regina, Regina, SK, Canada S4S 0A2

^* Corresponding author (Don.Waite{at}ec.gc.ca).

Received for publication June 23, 2003. 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 [,,-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 dicamba was most frequently detected in surface film (47%) and dugout water (97%). The highest quantities of the herbicides tended to be present during or immediately after the time of regional application.

Abbreviations: PUF, polyurethane foam

Related articles in JEQ:

This Issue in Journal of Environmental Quality

JEQ 2004 33: 1589-1599. [Full Text]