A simple voltammetric determination of metsulfuron-methyl in water samples using differential pulse cathodic stripping voltammetry
The voltammetric determination of metsulfuron-methyl, a type of pesticide, was investigated on a hanging mercury drop electrode using a differential pulse cathodic stripping voltammetry technique. The experimental parameters, such as the pH of the Britton-Robinson buffer, accumulation time, accumula...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Pesticide Science Society of Japan
2017
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| Subjects: | |
| Online Access: | http://eprints.utm.my/id/eprint/76527/1/ZulkifliYusop2017_ASimpleVoltammetricDeterminationofMetsulfuron1.pdf http://eprints.utm.my/id/eprint/76527/ https://www.scopus.com/inward/record.uri?eid=2-s2.0-85019370653&doi=10.1584%2fjpestics.+D16-086&partnerID=40&md5=17b8e6705b5924e542d250de3fa60990 |
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| Summary: | The voltammetric determination of metsulfuron-methyl, a type of pesticide, was investigated on a hanging mercury drop electrode using a differential pulse cathodic stripping voltammetry technique. The experimental parameters, such as the pH of the Britton-Robinson buffer, accumulation time, accumulation potential and initial potential were optimized for the metsulfuronmethyl determination. A well-defined reduction peak was observed at pH 2.0 to 4.0 in the potential range of -0.75 to -1.0 V. The pH of 2.0 was chosen as the optimum pH due to a good stripping signal of the reduction peak. There were no significant interfering ion effects on the electroanalysis of metsulfuron-methyl. The optimized parameters were then used to determine metsulfuron-methyl in the commercial pesticide Ally. The proposed method was highly sensitive due to the lower limit of determination (0.04 mg/L), being relatively selective, and consisting of good precision. The recovery values achieved were about 93% in water samples for this analysis. |
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