Electrochemical determination of the effect of lead(II) on the photochemical degradation of the pesticide metamitron |
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| Authors: | D Sancho M Vega L Debán R Pardo E Barrado |
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| Institution: | Departamento de Química Analitica, Facultad de Ciencias , Universidad de Valladolid , 47005, Valladolid, Spain |
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| Abstract: | The complexation of the pesticide Metamitron by lead(II) was investigated by polarography and stripping voltammetry. The influence of the pH on the complexation was determined and a maximum value for the conditional stability constant of the lead‐metamitron complex (logβ’ = 3.1) was obtained at pH 5.6. An investigation into the photochemical degradation of the pesticide demonstrated that lead decreases the degradation rate of metamitron by 13% within the first 30 days, due to stabilisation by complexation. |
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| Keywords: | Metamitron pesticide lead complexation stripping voltammetry degradation |
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