Employing Solid Phase Microextraction As Extraction Tool for Pesticide Residues in Traditional Medicinal Plants

Overview

Journal J Anal Methods Chem

Publisher Wiley

Specialty Chemistry

Date 2016 Oct 12

PMID 27725893

Citations 1

Authors

Thamani T Gondo

Veronica C Obuseng

Lesego C Mmualefe

Harriet Okatch

Affiliations

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Abstract

HS-SPME was optimised using blank plant sample for analysis of organochlorine pesticides (OCPs) of varying polarities in selected medicinal plants obtained from northern part of Botswana, where OCPs such as DDT and endosulfan have been historically applied to control disease carrying vectors (mosquitos and tsetse fly). The optimised SPME parameters were used to isolate analytes from root samples of five medicinal plants obtained from Maun and Kasane, Botswana. The final analytes determination was done with a gas chromatograph equipped with GC-ECD and analyte was confirmed using electron ionisation mass spectrometer (GC-MS). Dieldrin was the only pesticide detected and confirmed with MS in the sample obtained from Kasane. The method was validated and the analyte recoveries ranged from 69.58 ± 7.20 to 113 ± 15.44%, with RSDs ranging from 1.19 to 17.97%. The method indicated good linearity ( > 0.9900) in the range of 2 to 100 ng g. The method also proved to be sensitive with low limits of detection (LODs) ranging from 0.48 ± 0.16 to 1.50 ± 0.50 ng g. It can be concluded that SPME was successfully utilized as a sampling and extraction tool for pesticides of diverse polarities in root samples of medicinal plants.

Citing Articles

Simultaneous determination of iprodione, procymidone, and chlorflurenol in lake water and wastewater matrices by GC-MS after multivariate optimization of binary dispersive liquid-liquid microextraction.

Ozdogan N, Kapukiran F, Mutluoglu G, Chormey D, Bakirdere S Environ Monit Assess. 2018; 190(10):607.

PMID: 30255206 DOI: 10.1007/s10661-018-6961-3.

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