A pulse polarographic investigation of parathion and some other nitro-containing pesticides |
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Authors: | Malcolm R Smyth Janet G Osteryoung |
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Institution: | Department of Microbiology, Colorado State University, Fort Collins, Colorado 80523 U.S.A. |
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Abstract: | The polarographic behaviour of parathion, its major metabolites (paraoxon and p-nitrophenol), and of methylparathion, EPN and pentachloronitrobenzene has been studied over a wide pH range. Differential pulse polarography is used to differentiate between parathion, p-nitrophenol and pentachloronitrobenzene. An indirect determination of parathion in the presence of paraoxon can be based on their respective rates of hydrolysis in 0.5 M sodium hydroxide solution. The electrochemical behaviour of these compounds has also been investigated in solutions containing tetraalkylammonium salts as the supporting electrolyte. |
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