Grain Quality Testing Laboratory, Southern Zone Agricultural Research Centre, Pakistan Agricultural Research Council, Karachi University Campus, Karachi 75270, Pakistan.
Bull Environ Contam Toxicol. 2011 Jan;86(1):83-9. doi: 10.1007/s00128-010-0178-7. Epub 2010 Dec 23.
A simple, easy, cheap and efficient analytical method for determination of multiple pesticide residues including organochlorine, organophosphorus, synthetic pyrethroids and herbicides in rice grain by capillary gas chromatography is developed. The quantification of residues was done by capillary gas chromatography with a μ-ECD detector and a HP-5MS capillary column. Known amounts of a mixture of pesticides were added to grain prior to extraction, cleanup and GC-determination. Recoveries were checked at two fortification levels; 0.1 and 0.5 μg/g. Qualitative and quantitative analysis were carried out based on the retention time and peak area basis. The results show that the average recovery of the analytical method for the fortified rice samples was in the range of 74%-111% and %RSD in the range of 2.41-12.42. The analytical method was used to analyze commercial rice grain samples.
建立了一种用毛细管气相色谱法测定稻谷中多种农药残留（包括有机氯、有机磷、拟除虫菊酯和除草剂）的简单、快速、廉价、有效的分析方法。残留量的定量采用微电子俘获检测器和 HP-5MS 毛细管柱的毛细管气相色谱法进行。在提取、净化和 GC 测定之前，向谷物中加入已知量的混合农药。在两个加标水平（0.1 和 0.5μg/g）下检查回收率。定性和定量分析是基于保留时间和峰面积基础进行的。结果表明，该分析方法对加标稻谷样品的平均回收率在 74%-111%范围内，相对标准偏差（RSD）在 2.41-12.42%范围内。该分析方法用于分析商业稻谷样品。
