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Decontamination of Several Insecticide Residues on Major Vegetables

M. D. H. Prodhan
Scientific Officer
Entomology Division, BARI, Gazipur

M. A. Rahman
Senior Scientific Officer
Entomology Division, BARI, Gazipur

M. S. Ahmed
Senior Scientific Officer
Entomology Division, BARI, Gazipur

M. W. Akon
Scientific Officer
Entomology Division, BARI, Gazipur

Afroza Begum
Scientific Officer
Entomology Division, BARI, Gazipur

Abstract/ Executive Summary:

The study was conducted in the Pesticide Analytical Laboratory of Entomology Division, BARI, Gazipur during 2011 to quantify the residue loss of Quinalphos, Diazinon and Fenitrothion from brinjal and Malathion from yard long bean through washing and cooking. Samples were collected from the research field of Entomology Division, BARI, Gazipur. Brinjal was spiked with 100% pure 1.0 ppm of Quinalphos, Diazinon, Malathion and Fenitrothion. After 10 minutes of spiking, one sample was washed with water and another was heated at 100 0C. In both cases, for proper washing and heating 20 minutes waiting period were allowed. Following standard procedures extraction was done. The prepared samples were then injected in GC -FTD along with the standard of tested pesticides. Results showed that washing with water reduced 34% Quinalphos, 28% Diazinon and 41% Fenitrothion and heating with water at 100 °C reduced 95% Quinalphos, 84% Diazinon and 100% Fenitrothion from brinjal. Washing with water reduced 45% Malathion and heating with water at 100 °C reduced 100% Malathion from yard long bean.

Keywords: Decontamination, insecticides, residues, vegetables

Location: Gazipur

Start Date: 10-10-2010

End Date: 07-07-2011

Program Area: Pest Management

Commodity: Pesticide

Objectives:

To quantify the residue loss of Quinalphos, Diazinon and Fenitrothion from brinjal and Malathion from yard long bean through washing and cooking.

Methodology:

Brinjal was spiked with 100% pure 1.0 ppm of Quinalphos, Diazinon, Malathion and Fenitrothion. After 10 minutes of spiking, one sample was washed with water and another was heated at 100°C. In both the cases, for proper washing and heating 20 minutes waiting period were allowed. Extraction was done following standard procedures. The prepared samples were then injected in GC -FTD along with the standard of tested pesticides.

Source of Information: Annual Report 2010-2011, Entomology Division, BARI , Gazipur

Article Link (Online Journal):

Funding Source:

1.	Budget: 250000.00
2.	Budget: 250000.00

Total Budget (Tk.) : 250000.00

Achievement/Findings:

Results showed that washing with water reduced 34% Quinalphos, 28% Diazinon and 41% Fenitrothion and heating with water at 100 °C reduced 95% Quinalphos, 84% Diazinon and 100% Fenitrothion from brinjal. Washing with water reduced 45% Malathion and heating with water at 100 °C reduced 100% Malathion from yard long bean.

Knowledge Management: Report/Proceedings