In this paper,a portable gas chromatography-mass spectrometry method for volatile organic compounds in ambient air was established and the laboratory detection procedures were standardized.The analysis of high/low concentration curve,detection limit and determination limit,precision and accuracy of 52 kinds of volatile organic compounds was carried out.The results showed that the correlation coefficients of the high/low concentration calibration curves for 52 compounds were all greater than 0.990,indicating a good linear relationship.The range of detection limit was 0.4 μg/m3～5.0 μg/m3,and the range of determination limit was 1.7 μg/m3～20.0 μg/m3,which were not greater than the detection limit and determination lower limit in the standard.The relative standard deviation was less than 25%,and the recovery range of standard addition was within 70%～130%,indicating good precision and accuracy.This method is suitable for the determination of volatile organic compounds in ambient air.
关键词
便携式气相色谱-质谱法/挥发性有机物/检出限/精密度/正确度
Key words
portable gas chromatography-mass spectrometry/volatile organic compounds/detection limit/precision/accuracy
维普
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