摘要
目的建立工作场所空气中正己烷、苯、甲苯、二甲苯同时测定的热解吸气相色谱方法。方法按照《车间空气监测检验方法研究规范》的要求进行实验室实验及现场实验。结果正己烷、苯、甲苯、二甲苯方法的平均相对标准偏差在4.9%以内,方法的最低检测浓度均在2.4 mg/m3以内,热解吸效率均在80%以上,空气中正己烷、苯、甲苯、二甲苯等在该方法条件下可同时分别测定。结论该方法各项指标均达到《车间空气监测检验方法研究规范》的要求,适用于工作场所空气中正己烷、苯、甲苯、二甲苯的同时监测。
[ Objective] To establish thermal desorption gas chromatography for the determination of n - hexane and benzene in the air of workplaces. [Methods] Laboratorial and site experiments were carried out according to the ＂Standardization of the Methods for the Determination of Toxic Substances in the Air of Workplaces＂. [Results] The RSD of n - hexane, benzene, toluene and xylene was below 4.9% ; the lowest detection limit was within 2.4 mg/m^3; the thermal desorption efficiency was above 80% ; n- hexane, benzene, toluene and xylene in the air of workplaces can be determined simultaneously with this method. [ Conclusion] This method meets the requirement of ＂Standardization of the Methods for the Determination of Toxic Substances in the Air of Workplaces＂ and can be applied for the simultaneous determination of n- hexane, benzene, toluene and xylene in the air of workplaces.
出处
《职业与健康》
CAS
2006年第7期494-495,共2页
Occupation and Health
关键词
空气
正己烷
苯
甲苯
二甲苯
热解吸
气相色谱
Air
n - hexane
Benzene
Toluene and xylene
Thermal desorpfion
Gas chromatography
