Rapid and Inexpensive Densitometric Method, Using TLC Plates, for Quantification and Determination of Nine Pesticides in Water

Hamada, M. and Ghalwa, N. A. and Abu-Shawish, H. M. and Shubair, O. (2012) Rapid and Inexpensive Densitometric Method, Using TLC Plates, for Quantification and Determination of Nine Pesticides in Water. Pakistan Journal of Chemistry, 2 (1). pp. 34-40. ISSN 22202625

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Official URL: http://doi.org/10.15228/2012.v02.i01.p06

Abstract

Nine pesticides of commonly used in Gaza Strip were tested in this work for optimal separation onto silica gel TLC plates in acetone/ cyclohexane, 1:2 (v/v), as a mobile phase to develop a new densitometric method for quantification and determination of these pesticides in water samples. These pesticides are: abamectine, atrazine, benomyl, cymoxanil, diuron, imidacloprid, linuron, penconazole, and propazine. Calibration plots were linear between 25 to 1000 ng/ spot for all pesticides with a correlation coefficient, r, between 0.9920 and 0.9993. Recoveries after enrichment of real water samples on Bakerbond RP-C18 cartridges were between 79.4 and 103.7 % at a relative standard deviation between ±1.92 and 3.68 %. Detection limits LOD of 25 - 100 ng per spot for eight of the pesticides were reached, which meet the European limits for pesticides in drinking water (100 ngL-1), while penconazole has an LOD value of 200 ngL-1 because of its low UV-absorption coefficient.

Item Type: Article
Subjects: Q Science > QD Chemistry
Depositing User: أ.د. حازم محمد عبد الحميد أبو شاويش
Date Deposited: 14 Mar 2018 09:54
Last Modified: 14 Mar 2018 09:54
URI: http://scholar.alaqsa.edu.ps/id/eprint/388

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