Gas chromatographic and mass spectrometric investigation of seven carbamate insecticides and one metabolite by Wigfield, Y.Y., Grant, R., Snider, N.

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Residues of glyphosate and its principle metabolite in certain cereals, oilseeds, and pulses grown in Canada, 1990-1992 by WIGFIELD, Y. Y, DENEAULT, F, FILLION, J

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Simultaneous determination of residues of paraquat and diquat in potatoes using high-performance capillary electrophoresis with a ultraviolet detection by Wigfield, Yuk Y, McCormack, Kathleen A, Grant, Ralph

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Supercritical fluid extraction of the fortified residues of fluazifop-P-butyl (Fusilade II) and its major metabolite, fluazifop-P, in onions by Wigfield, Yuk Y, Lanouette, Monique

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Analysis for atrazine in fortified cornmeal and corns using a commercially available enzyme immunoassay microliter plate by Wigfield, Y.Y, Grant, R

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Evaluation of an immunoassay kit for the detection of certain organochlorine (cyclodiene) pesticide residues in apple, tomato, and lettuce by Wigfield, Y.Y. (Agriculture Canada, Ottawa, Ontario, Canada), Grant, R

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Determination of N-nitrosodimethylamine in thiram formulations using steam distillation followed by solid phase extraction/enrichment by Wigfield, Y.Y. (Agriculture Canada, Ottawa, Ontario, Canada), Lacroix, M.D

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Liquid chromatographic and thermal energy analyzer detection of N-nitrosodiphenylamine in formulations of diphenylamine by Wigfield, Y.Y. (Agriculture Canada, Ottawa, Ontario, Canada), McLenaghan, C.C

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Levels of N-nitrosodimethylamine in nitrogen fertilizers/herbicide mixtures containing 2,4-D present as dimethylamine salt by Wigfield, Y.Y. (Agriculture Canada, Ottawa, Ontario, Canada), McLenaghan, C.C

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Conformational preference of an .alpha.-sulfinyl carbanion by Fraser, Robert R, Schuber, Francis J, Wigfield, Yuk Y

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