title: Facile and sensitive spectrophotometric determination of synthetic pyrithroids in their formulations, water and grain samples.
abstract: A novel reagent was introduced for the facile and sensitive spectrophotometric determination of synthetic 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 lambda(max) 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.
authors.affiliation: Department of Chemistry, Environmental Monitoring Laboratory, S.V. University, Tiruapti, 517 502, Andhara Pradesh, India.
authors.forename: K Suresh
authors.initials: KS
authors.lastname: Kumar
authors.forename: B Lokanath
authors.initials: BL
authors.lastname: Swaroop
authors.forename: K
authors.initials: K
authors.lastname: Suvardhan
authors.forename: D
authors.initials: D
authors.lastname: Rekha
authors.forename: B
authors.initials: B
authors.lastname: Jayaraj
authors.forename: P
authors.initials: P
authors.lastname: Chiranjeevi
mesh_terms: D002523:Edible Grain / Q000737:chemistry*; D004784:Environmental Monitoring; D007306:Insecticides / Q000032:analysis*; D009570:Nitriles / Q000032:analysis; D011722:Pyrethrins / Q000032:analysis*; D013053:Spectrophotometry; D014867:Water / Q000032:analysis*
chemical_list: D007306:Insecticides; D009570:Nitriles; D011722:Pyrethrins; D014867:Water; C017160:cypermethrin; C017180:decamethrin; C017690:fenvalerate