Residue detection of chlorpyrifos and fenitrothion in tomato

Residue detection of chlorpyrifos and fenitrothion in tomato

Bangladesh J. Environ. Sci., Vol. 36, 33-38, 2019 @ BAED ISSN 1561-9206

RESIDUE DITECTION OF CHLORPYRIFOS AND FENITROTHION IN TOMATO

M. M. Alam, M. A. Sattar, M. A. Baten and M. T. Islam1

Dept. of Environmental Science, BAU, Mymensingh-2202

1CEIP-1, Bangladesh Water Development Board, Khulna

ABSTRACT

The present study regarding pesticides residue analysis was made during the period of September, 2015 to March, 2017. The residue detection (the estimation of active ingredient i.e. A.I. content) of chlorpyrifos and fenitrothion from tomato fruit using Gas Chromatography (GC) was carried out in the Pesticide Analysis Laboratory, Department of Chemistry, University of Dhaka, Bangladesh.

The quantity of chlorpyrifos was gradually decreased with increasing days after spraying (DAS) and it was below MRL at 7 DAS (0.279 ppm). Residue of fenitrothion determined by GC-FID at 0 DAS (two hours after spraying) was 8.341 ppm and it was also gradually decreased with increasing days after spraying (DAS) and it was below MRL at 6 DAS (0.281 ppm).

Key words: Pesticide, chlorpyrifos, fenitrothion, residue, tomato.