Facile and Sensitive Spectrophotometric Determination of Synthetic Pyrithroids in Their Formulations, Water and Grain Samples |
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Authors: | K. Suresh Kumar B. Lokanath Swaroop K. Suvardhan D. Rekha B. Jayaraj P. Chiranjeevi |
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Affiliation: | (1) Department of Chemistry, Environmental Monitoring Laboratory, S.V. University, Tiruapti, 517 502, Andhara Pradesh, India;(2) Department of Mathematics, S.V. University, Tiruapti, 517 502, Andhara Pradesh, India |
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Abstract: | A novel reagent was introduced for the facile and sensitive spectrophotometric determination of syntheitic pyrethroids in their formulations (fenvalerate, cypermethrin and decamethrin), water and grain samples. These methods were based on the hydrolysis of synthetic pyrethroids under the alkaline conditions to form respective aldehyde groups. These groups were condensation with 3-methyl-2-benzothiazolinone hydrochloride (MBTH) to yield color derivatives having λmax at 520 nm for fenvalerate, 516 nm for cypermethrin and 512 nm for decamethrin. The proposed method could be successfully applied for the determination of synthetic pyrethroids in their formulations, water and grain samples. |
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Keywords: | synthetic pyrethroids 3-methyl-2-benzothiazolinone hydrochloride (MBTH) spectrophotometry water and grain samples |
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