摘要
目的：建立了空气中丙酮、乙酸乙酯、苯、甲基异丁基甲酮、甲苯、乙酸丁酯、间二甲苯和邻二甲苯气相色谱同时测定方法。方法：采用活性碳管吸附空气中丙酮、乙酸乙酯、苯、甲基异丁基甲酮、甲苯、乙酸丁酯、间二甲苯和邻二甲苯,由二硫化碳解吸、进样,经50 m×0.32 mm×1.0μm kf（100%聚二甲基硅氧烷）毛细管柱分离测定,初温50℃保持4 min,升温速率5℃/min至120℃保持1 min,分流比：不分流。结果：丙酮、乙酸乙酯、苯、甲基异丁基甲酮、甲苯、乙酸丁酯、间二甲苯和邻二甲苯的保留时间分别为3.55、5.69、7.13、9.54、10.88、12.47、15.11、16.07 min;线性范围分别为1.1～440μg/ml、1.1～442.8μg/ml、0.5～200μg/ml、1.2～490.4μg/ml、0.5～200μg/ml、1.1～433.2μg/ml、0.5～200μg/ml、0.5～200μg/ml;检出限分别为：1.1、1.1、0.5、1.2、0.5、1.1、0.5、0.5μg/ml;相关系数分别为：0.9988、0.9982、0.9996、0.9995、0.9997、0.9995、0.9997、0.9997。结论：该方法适合空气中丙酮、乙酸乙酯、苯、甲基异丁基甲酮、甲苯、乙酸丁酯、间二甲苯和邻二甲苯的同时测定。
Objective：A method for the simultaneous determination of benzene series, ester and ketone in air by gas chromatography was developed. Methods： Benzene series, ester and ketone in air were collected .with charcoal tube, then were injected after being desorbed with carbon disulfide through kf （Poly（dimethylsiloxane） ） capillary column （50 m × 0. 32 mm × 1.0 μm）. The primary temperature was set at 50℃ remaining 4 minutes, and the last temperature was 120℃ remaining 1 minute with elevate temperature ratio 5℃ per minute. Apart -flow rate was splitless. Results：Retention time for acetone, ethyl aceate, benzene, 4 - methyl - 2 - pentanone, toluene, butyl acetate, m - xylene and o - xylene were 3.55, 5.69, 7. 13, 9. 54, 10. 88, 12. 47, 15.11 and 16. 07 min, respectively. The linear ranges were 1.1 ～440 μg/ml, 1.1 ～ 442. 8 μg/ml, 0. 5 ～ 200 μg/ml, 1.2 ～ 490. 4 μg/ml, 0. 5 ～ 200μg/ml, 1.1 ～ 433.2 μg/ml, 0. 5 ～ 200 μg/ml and 0. 5 ～ 200 μg/ml. The limits of detection were 1.1, 1.1,0.5, 1.2, 0. 5, 1.1, 0. 5 and 0. 5 μg/ml. The coefficient of correlation was 0. 9988, 0. 9982, 0. 9996, 0. 9995, 0. 9997, 0. 9995, 0. 9997 and 0. 9997. Conclusion：The method is applicable in simultaneously determining benzene series, ester and ketone in air.
出处
《中国卫生检验杂志》
CAS
2008年第6期986-987,1081,共3页
Chinese Journal of Health Laboratory Technology
关键词
气相色谱
苯系物
酯类
酮类
溶剂解吸
Gas chromatography
Benzene series
Ester
Ketone
Dissolvent desorption
