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An electrochemical method for the determination of azinphos-methyl and parathion-methyl in honey is presented. The determination is established by adsorptive stripping differential pulse voltammetry at hanging mercury working electrode.In contrast to the chromatographic methods for the determination of pesticide residues, the sample preparation of the proposed method is minimal; analytes were extracted from honey samples with a mixture of (acetone):(Britton-Robinson buffer) and then were analyzed without any additional pretreatment.The response of the analytes either individually or as a mixture was studied for a series of deposition time and molar ratio. Two quantitation protocols were compared, using either the external calibration or the standard addition method. Accuracy was tested with spiked honey samples obtaining good recovery values. The limit of detection for the honey sample (for deposition time of 10 s) was calculated 51.71 μg kg−1 for MeP and 65.87 μg kg−1 for AzMet. 相似文献
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介绍了一种测定复配农药中甲基1605含量的新方法,该法简便,相关性好,变异系数为0.54,方法平均回收率为99.6% 相似文献
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气相色谱法测定甲基对硫磷和氟氯氰菊酯的复配制剂 总被引:2,自引:0,他引:2
本文采用气相色谱程序长温法,在SE-30填充柱上,以磷酸三苯酯作内标物,用FID检测器对硫硫磷和氟氯氰菊酯进行定量分析。本方法变异系数分别为0.54%、1.79%,平均回收率分别为100.00%、99.95%,线性相关系数分别为0.9996、0.9989。 相似文献
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本文采用液相色谱法同时分析38%辛.甲对乳油中辛硫磷和甲基对磷磷含量。辛硫磷平均回收率为99.8%,甲基对硫磷为101.4%。辛硫磷标准偏差为0.47,甲基对硫磷为0.35。 相似文献
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高效液相色谱快速测定复配农药中甲基对硫磷及高效顺反氯氰菊酯的含量 总被引:1,自引:0,他引:1
用高效液相色谱直接测定了10%甲对·高氯乳油中甲基对硫磷及高效氯氰菊酯的有效成份。并对方法精密度、准确度及检测波长选择进行了探讨。本法快速准确,适用于工业生产。 相似文献