农药残留分析样品前处理新方法

In Front of the Pesticide Residue Analysis Sample Processes New Method

为了保证新鲜水果和蔬菜中的农药残留在法定的最大残留允许限量以下,达到安全农产品的要求,农药残留分析的样品前处理至关重要,作者所用方法是在乙腈作为提取溶剂的多残留检测方法上发展起来的。该技术采用固相萃取代替传统的液一液萃取;用氮吹仪代替旋转蒸发仪,大大简化了样品前处理步骤,节约了时间,且回收率达到了农残检测技术要求。该方法能对有机磷,有机氯(包括拟除虫菊酯)和N—甲基氨基甲酸酯类农药分析准确定性、定量起到关键作用。

In order to below guarantee in the fresh fruit and vegetable pesticide residue in legal remains the permission to limit the quantity most greatly, achieved the security agricultural product the request, in front of the pesticide residue analysis sample processes very important, this method is withdraws the solvent in the second grade nitrile achievement remains much in the examination method develops. This technology uses the solid phase .extract replaces traditional the fluid one fluid extract; Blows the meter with the nitrogen replaces revolves evaporates the meter, greatly simplified before the sample processes the step, saved the time, also the returns- ratio met the agricultural remnant examination technology requirements. This method can to the organic phosphorus, the organic chlorine （including plan to eliminate insect chrysanthemum ester） and the N - methyl oxaminic acid ester agricultural chemicals analysis accurate qualitative, the quota plays the key role.