Research on Improving Gas Chromatography Method for Determining Harmful Substances of Acetic Acid in Air Environment
This study is based on improving gas chromatography and aims to accurately determine harmful substances such as acetic acid in the air environment.Firstly,the study comprehensively analyzes the properties and characteristics of harmful substances such as acetic acid.Secondly,comparative experiments with traditional methods are conducted.Finally,the determination and analysis of different samples are studied.In the precision experiment,the RSD at low mass concentration(42 μg/mL)was 5.2%,while the RSD at medium and high mass concentrations(420 μg/mL and 840 μ g/mL)were both 7.2%.In the accuracy experiment,when the addition amount was 210,the average value was 202.5 and the recovery rate was 91.2%.When the addition amount is 420,the average value is 392.5,and the recovery rate is 91.0%.In the desorption efficiency experiment,the desorption efficiency was 94.7%～96.0%at a mass concentration of 42 μg/mL,with an average desorption efficiency of 96.0%.The decomposition and absorption efficiency of the lower part at a mass concentration of 76 and 105 μg/mL exceeds 100%.This research method has high accuracy and reliability in the determination of harmful substances such as acetic acid in the air.
gas chromatographyacetic acid harmful substancesair environmentperformance index
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