Portable GC-MS Determination of 39 VOCs in Ambient Air
In emergency monitoring of sudden environmental pollution,the use of portable gas chromatography-mass spectrometry(GC-MS),combined with gas sampling probes,enables rapid on-site quantitative analysis of volatile organic compounds(VOCs)in the air.This paper establishes a method for the determination of 39 VOCs in ambient air using portable GC-MS,through the analysis of detection limits,precision,and recovery rates of these compounds.The detection limit of this method is 1.4～4.3 μg/m3,with a lower limit of 5.6～17.1 μg/m3,with a correlation coefficient of 0.990～0.998.This method is not only easy to operate and has a short analysis time,but also has high sensitivity,making it suitable for VOCs analysis in daily monitoring of environmental air and emergency monitoring of sudden environmental pollution.
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