论文部分内容阅读
目的:建立DB-WAX毛细管柱同时测定工作场所空气中30种挥发性有机污染物的快速检测方法。方法:于2020年8月，用活性炭管采集工作场所空气中正戊烷、正己烷、甲基环己烷、辛烷、丙酮、乙酸乙酯、丁酮、苯、3-戊酮、三氯乙烯、四氯乙烯、甲苯、乙酸丁酯、2-己酮、乙酸异戊酯、乙苯、对二甲苯、间二甲苯、乙酸戊酯、邻二甲苯、氯苯、苯乙烯、环己酮、对氯甲苯、溴苯、间二氯苯、对二氯苯、邻二氯苯、邻氯甲苯、1, 2, 4-三氯苯30种物质，经二硫化碳解析，解吸液经DB-WAX柱分析，火焰离子化检测器测定。结果:30种挥发性有机污染物分离效果好，工作曲线线性相关系数均>0.999，相对标准偏差0.1%~3.2%，解吸效率77.0%~117.1%，定量下限0.33~ 5.33 μg/ml，最低定量浓度0.22~ 3.55 mg/mn 3，加标回收率95.4%~104.9%。n 结论:该方法能够较好地分离和测定工作场所空气中30种挥发性有机化合物，操作简便、快捷。“,”Objective:To establish a method for rapid detection of DB-WAX capillary column and determination of the workplace air in 30 kinds of volatile organic pollutants.Methods:In August 2020, N-pentane, n-hexane, methylcyclohexane, octane, Acetone, ethyl acetate, butanone, benzene, 3-pentanone, trichloroethylene, tetrachloroethylene, toluene, butyl acetate, 2-hexanone, Isoamyl acetate, ethylbenzene, p-xylene, m-xylene, amyl acetate, o-xylene, chlorobenzene, styrene, cyclohexanone, P-chlorotoluene, bromobenzene, M-dichlorobenzene, p-dichlorobenzene, O-dichlorobenzene, o-Chlorotoluene, 1, 2 , 4-trichlorobenzene of 30 kinds of substances in air were collected by activated carbon tube. After analysis by carbon disulfide, the analytical solution was analyzed by DB-WAX column and determined by FID detector.Results:The above 30 kinds of volatile organic pollutants had good separation effect, the correlation coefficient of the standard curve was above 0.999, the relative standard deviation was 0.1%-3.2%, the desorption efficiency was 77.0%-117.1% , the lower limit of quantitation was 0.33-5.33 μg/ml, and the lowest quantitation concentration was 0.22-3.55 mg/m n 3, the recoveries ranged was 95.4%-104.9%.n Conclusion:The method can effectively separate and accurately determine 30 volatile organic compounds in these workplaces, and the method is simple and quick.