Determination of Major Organophosphorus Pesticide Residues in Eggplant using QuEChERS Extraction and Gas Chromatography

Authors : Md. Safiqul Islam, Mohammad Dalower Hossain Prodhan, Md. Khabir Uddin

Volume/Issue : Volume 4 - 2019, Issue 8 - August

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Nowadays, a great concern about pesticide residues and their harmful impact on human health and environment is growing rapidly. Highly toxic chemical pesticides are responsible for direct and significant harm to all living beings and ecosystem. This investigation was undertaken to scrutinize the entity of seven Organophosphorus pesticide residues like acephate, dimethoate, fenitrothion, chlorpyrifos, quinalphos, diazinon and malathion in eggplant. Seventy eight eggplant samples were collected from retail markets located at the surrounding area of Jahangirnagar University, Savar, Dhaka, Bangladesh namely Genda bazaar, Savar bazaar, Nayarhat bazaar, Islampur bazaar, Pallibiddut bazar, Baipayl bazaar and Sreepur bazaar. The samples were extracted by modified quick, easy, cheap, effective, rugged and safe (QuEChERS) method and analyzed by Gas Chromatography coupled with Flame Thermionic Detector (GC-FTD). Among the seventy eight analyzed samples, nine (11.5%) were contaminated by pesticide residues. Two of them were exceeded the EU-MRL (EC, 2015). Another sixty nine samples (88.5%) were free from the contamination of the sought pesticides. The findings from this current study showed the subsistence of pesticide residues in daily consumed vegetables of Savar, Dhaka, Bangladesh that pointed to the imminent health hazards. Therefore, public awareness about the pesticides and other related matter should be increased for practicing a pesticide free agriculture as well as gain contaminate free environment.

Keywords : Eggplant, Pesticide Residue, QuEChERS Extraction, GC-FTD.


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