菊酯类农药残留的快速测定

Fast Determination for Residue of Pyrethroid Pesticide

研究开发出了一种能够简单、快速、准确检测样品中菊酯类农药残留量的方法,可用于甲氰菊酯、溴氰菊酯、氰戊菊酯、联苯菊酯的初步测定。通过与色谱法的测定结果比较,验证了该方法的可行性。整个测定时间不超过4h,降低了检测时间,检测效果理想。平均加标回收率能控制在84.0%～115.0%之间,检出限为0.25mg/kg,可用于蔬菜中菊酯类农药的残留量初筛试验。该法使用方便,操作简单、快速,节省时间,节省人力,减少大量工作,加快检测速度。

A method had developed that could simply, rapidly and accurately detect the residual quantity of pyrethroid pesticide in the samples, it could be used to preliminarily determine the fenpropathrin, dehamethrin, fenvalerate and bifenthrin. This method had been proved feasible by comparing with the results of chromatography. The whole process of detection takes no more than four hours, so it reduced the time of detection. The effect of detection was great that the average recoveries of standard addition can be controlled in the range of 84.0% to 115.0 % and the detection limit was 0.25 mg/kg, so this method can be used in the screening test of the pyrethroid pesticide residues in vegetables. This method is easy, simple and fast to use, and it not only save time and manpower, but also reduces a lot of work to accelerate the speed of detection.