工作场所空气中苯系物的毛细管柱，液化石油气，二甲醚，甲缩醛，乙缩醛，乙醇，室内空气，焦炉煤气，炼厂气，天然气，变压器油，多氯联苯，植物油，6号溶剂残留，裂解进样器
工作场所空气中苯系物的毛细管柱
工作场所空气中苯系物的毛细管柱 详细信息：
名称：毛细管柱
规格：30m*0.32mm*0.5um
型号：OV-17
应用： 工作场所空气中苯系物的毛细管柱
滕州市浩瀚色谱仪器技术服务有限公司，优化毛细管柱--气相色谱法测定工作场所空气中苯、甲苯、邻二甲苯、间二甲苯、对二甲苯、乙苯和苯乙烯的测试条件。方法:采用程序升温毛细管柱气相色谱法测定,并进行方法学试验和干扰试验。结果:7种苯系物在10min内完成测定并具有较好的分离效果,共存物三氯甲烷、甲酸乙酯、乙酸酯类不干扰测定;苯系物在1.60～906.00μg/mL浓度范围内可获得较好的直线方程,相关系数(r)为0.9992～0.9999;测定下限分别为:苯1.60μg/mL、甲苯1.80μg/mL、邻二甲苯2.38μg/mL、间二甲苯2.18μg/mL、对二甲苯2.13μg/mL、乙苯2.01μg/mL和苯乙烯2.62μg/mL;解吸效率为78.7%～104.8%;精密度(RSD)为1.5%～4.3%;加标回收率为98.9%～105.0%。结论:此方法操作简便、重现性和灵敏度均符合实验室检测要求,且共存物三氯甲烷、甲酸乙酯、乙酸酯类不干扰测定,适用于检测工作场所中苯系物的含量。
Capillary column of benzene series in the air of workplace
Capillary column of benzene series in the air of workplace. Details:
Name: Capillary Column
Specification: 30m*0.32mm*0.5um
Model: OV-17
Application: Capillary column of benzene series in the air of workplace
Tengzhou Haohan Chromatography Instrument Technology Service Co., Ltd. optimized the test conditions of capillary column-gas chromatography for the determination of benzene, toluene, o-xylene, m-xylene, p-xylene, ethylbenzene and styrene in the air of workplace. Method: The temperature-programmed capillary column gas chromatography was used for the determination, and the methodology test and interference test were carried out. Results: The determination of 7 kinds of benzene series was completed within 10 minutes and had a good separation effect. The coexistents chloroform, ethyl formate and acetate did not interfere with the determination; the concentration of benzene series was in the range of 1.60～906.00μg/mL A good linear equation can be obtained, and the correlation coefficient (r) is 0.9992~0.9999; the lower determination limits are: benzene 1.60μg/mL, toluene 1.80μg/mL, o-xylene 2.38μg/mL, m-xylene 2.18μg/mL , P-xylene 2.13μg/mL, ethylbenzene 2.01μg/mL and styrene 2.62μg/mL; desorption efficiency is 78.7%～104.8%; precision (RSD) is 1.5%～4.3%; spiked recovery rate is 98.9 %～105.0%. Conclusion: This method is easy to operate, reproducibility and sensitivity are in line with laboratory testing requirements, and the coexistents chloroform, ethyl formate, and acetate do not interfere with the determination. It is suitable for detecting the content of benzene series in the workplace.
