中文摘要：我们已经开发了对苹果和黄瓜中120种农药残留进行检测的多残留液相色谱-串联质谱检测方法，并在农药常规检测和监测进程中得到了验证和实施。采用QuEChERS法对苹果和黄瓜样本中农药残留进行提取，LC-MS/MS法进行残留分析。在0.01 μg/g、0.05μg /g和0.1μg /g三种浓度下，平均回收率70%-120%，相对标准差低于20%，苹果和黄瓜中农药残留检测限分别在0.0014μg/g -0.0110μg/g之间和0.0012μg/g-0.0075μg/g之间，定量限均为0.01μg/g。
外文摘要：Most countries have clearly defined regulations governing the use of pesticides in agricultural activity. The application of pesticides in agriculture usually leads to a residual amount of these pesticides on food products such as fruit and vegetables. The presence of pesticide residues on these foods destined for human consumption may pose food safety risks to consumers. To protect consumers, national authorities have established maximum limits for pesticide residues in foods. These limits can only be enforced if there are methods available to detect and monitor their concentrations in the applicable food products. To support the enforcement of this legislation, we have developed a multi-residue liquid chromatography-tandem mass spectrometry (LCMS/ MS) method for the analysis of 120 pesticide residues in apples and cucumbers which has been validated and implemented in the routine monitoring and surveillance programme for these pesticides. In this method, apple and cucumber samples are extracted using the QuEChERS method (quick, easy, cheap, effective, rugged, and safe) and the extracts were analyzed directly by LC-MS/MS. The mean recoveries at three different concentrations of 0.01 mu g/g, 0.05 mu g/g, and 0.1 mu g/g over the analytical range varied between 70 and 120%. The repeatability of the method expressed as % RSD was less than 20%. The limit of detection (LOD) of the method ranged between 0.0014 and 0.0110 mu g/g for apples and between 0.0012 and 0.0075 mu g/g for cucumbers. The limit of quantification (LOQ) of the method was 0.01 mu g/g for apples and cucumbers. The method has been used for the analysis of over 600 apple and 550 cucumber samples over the past two years. Copyright (C) 2016 John Wiley & Sons, Ltd.
 
外文关键词：QuEChERS, LC-MS/MS, pesticide residues, fruit, vegetables
作者：Ramadan, Gouda; Al Jabir, Muna; Alabdulmalik, Najat; Mohammed, Ali
作者单位：Minist Publ Hlth, Cent Food Lab, Doha, Qatar.
期刊名称：DRUG TESTING AND ANALYSIS
期刊影响因子：2.859
出版年份：2016
出版刊次：6
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