Abstract
Determination of omethoate by cathodically sweeping oscillopolarography is described. The product of the alkaline hydrolysis exhibited a sensitive second derivative wave at −0.50 V (vs. SCE) in a 1.0 ×10−5mol/L sodium dodecylbenzene sulfonate (SDBS)+0.1 mol/L HAc-NaAc (pH 4.0) buffer. The peak current was linearly proportional to the concentration of omethoate in the range from 6.4×10−7 to 5.1×10−5 mol/L. The detection limit is 2.0×10−7 mol/L with the relative standard derivation (RSD) of 3.5%. The hydrolysis procedure and the electrode reaction were studied by voltammetry.
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References
Wu Shichang.New Pesticide Collection. Beijing: Chinese Agriculture Technology Press, 1992. 86–87
Roach J A G, Carson L J. Collisionally actived decomposition mass spectrometry-mass spectrometry determination of organophosphorous pesticide in food.J Asso Off Anal Chem, 1987,70(3): 439–442
Ferreira J R, Falcao M M, Tainha A. Residues of dimethoate and omethoate in peaches and apples following repeated applications of dimethoate.J Agric Food Chem, 1987,35(4):506–508
Drescher W, Fiedler L. Mothode zum Nachweis von Ruckstanden der Insektixide Acephat, Dimethoate, Methamidophos und Omethoate in Kleinen Nektarmengen.Chemosphere, 1983,12: 1605–1610
Fu Z Ge.The Purification and Quantitation of Standard Pesticides. Beijing: Chinese Foreign Economy and Trading Press, 1995. 73–74
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Supported by the Foundation of Chinese-Franch Cooperation Programme on the Advanced Research
Wang Yu: born in 1964. Lecturer. Cangzhou Teacher’s College, Cangzhou, Hebei, 061001
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Yu, W., Yuansi, S., Junhua, H. et al. Determination of omethoate by cathodically sweeping oscillopolarography. Wuhan Univ. J. Nat. Sci. 3, 469–472 (1998). https://doi.org/10.1007/BF02830053
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DOI: https://doi.org/10.1007/BF02830053