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Determination of Lambda-Cyhalothrin and Malathion Residues in Locust by Gas Chromatography with Electron Capture Detection

journal contribution
posted on 2023-07-14, 01:45 authored by R Khatoon, Riaz UddinRiaz Uddin, S Khurshid, F Anwar, S Iqbal, PA Baloch, A Khan
Abstract: A reliable, easy, and reproducible method was developed for the quantification of λ-cyhalothrin and malathion residues in desert locust. For the extraction, a mixture of acetone and methanol (1 : 1) was used, and clean-up was performed by solid-phase extraction. Method efficacy was checked by fortification results at 0.01, 0.05, 0.10, and 0.5 mg/kg. Average recoveries for λ-cyhalothrin and malathion were found to be 70–86% with RSD of 5.4–8.4% and 70 to 90% with RSD of 3.5–5.9%, respectively. After validation, the method was successfully applied to the analysis of real field samples of locust collected from Thar region of Umerkot Sindh, Pakistan, during Locust Control Program (2019–2020) organized by the Ministry of National Food Security and Research, Government of Pakistan. The residues of lambda-cyhalothrin and malathion in all the analyzed samples were found in the range of 0.25–0.8 and 0.10–0.4 mg/kg, respectively.

History

Journal

Journal of Analytical Chemistry

Volume

77

Pagination

611-617

Location

St Petersburg, Russia

ISSN

1061-9348

eISSN

1608-3199

Language

en

Publication classification

C1.1 Refereed article in a scholarly journal

Issue

5

Publisher

Pleiades Publishing Ltd