依照 JJF1059-1999《测量不确定度评定与表示》，对气相色谱法测定环境空气中苯系物的结果进行了不确定度评定。分析了测量过程中引入的不确定度来源，结果显示解析效率、采样引入的不确定度对测定结果影响最大，可采取相关方法进行改进，以提高测量结果的准确度。%Based on JJF1059-1999 Evaluation and Expression of Uncertainty in Measurement, the measurement uncertainty for BTEXs in air was evaluated results by gas chromatographic method. The sources of uncertainty produced in analysis process were discussed. Introducing the analytic efficiency, the maximum degree of sampling uncertainty effect on the measured results. Can be taken by the improved method, in order to improve the accuracy of measurement results.
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