The test result is a value assigned to the measured quantity according to the requirements of the testing process,and to more fully express the test result,an uncertainty value should also be given.This article analyzes and synthesizes the uncertainty of the detection work of azinphos-methyl residues in edible agricultural products based on GB/T 5009.131-2003.The results show that among the multiple sources of uncertainty components introduced during the experiment,such as standard solution,calibration curve,sample quality,volume,recovery rate,repeatability,etc.,the uncertainty component introduced by the configuration of the standard solution is the largest.The expansion uncertainty is 15.6％,and the expansion factor k=2.
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