Differential pulse polarographic determination of DICROTOPHOS (cas 141-66-2), crotoxyphos and chlorfenvinphos in grains and soils

Add time:09/29/2019    Source:infona.pl

A simple, sensitive and rapid differential pulse polarographic method has been developed for the quantitative determination of organophosphorus pesticides such as dicrotophos, crotoxyphos and chlorfenvinphos in agricultural formulations in universal buffers of a pH range 2.0–12.0. The sample is treated with ethanol to facilitate the dissolution of these pesticides. Both standard addition and calibration methods can be used for the analyses. The lower detection limits are 1.25×10 −9 , 1.05×10 −9 and 1.0×10 −9 M, respectively. The method can be applied successfully to determination of these pesticides in grains and soil.

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