为了监测实验室有机磷农药残留检测能力,参加全国范围内能力验证.该实验根据GB 23200.116-2019国家标准,并对其方法进行简单优化.对于单一阳性样品,取两次平行检测的平均值,添加已知浓度的标准品,并计算回收率,减少基质效应对结果的影响.结果表明:有机磷农药残留能力验证结果满意,且实验室满足检测要求,确保了检测结果的可靠性;优化后,实验操作简单,可用于实验室日常快速检测有机磷类农药.
To monitor laboratory organophosphorus pesticide residue detection capability,participate in nationwide capability verification.The experiment is based on GB 23200.116-2019 national standard,and its method is sim-ply optimized.For a single positive sample,the average of two parallel tests was taken,the standard substance of known concentration was added,and the recovery rate was calculated to reduce the influence of matrix effect on the results.The results showed that the verification results of organophosphorus pesticide residue capability were satis-factory,and the laboratory met the detection requirements,which ensured the reliability of the detection re-sults.After optimization,the experimental operation is simple,and it can be used for daily rapid detection of organ-ophosphorus pesticides in the laboratory.