【摘要】 目的建立工作场所空气中正己烷的溶剂解吸气相色谱测定方法。方法按照《车间空气监测检验方法研究规范》的要求进行实验室及现场实验。结果溶剂解吸气相色谱法测定正己烷,回收率为93.4%~96.1%;最低检出溶度0.5mg/m3;不同溶度的相对标准偏差为0.4%~1.3%;线性范围是0.0~892.8μg/ml。空气中与正己烷共存的正庚烷、正戊烷在该方法条件下不干扰测定。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的现场监测。更多还原

【Abstract】 Objective To establish a method for determination of n-hexane in the air of working place by solvent desorption gas phase chromatography. Methods The expriments were conducted in laboratory and on the site according to <Standardard technique for determination of toxic substances in the air of workshop>. Results The recovery rates of solvents desorption gas phase chromatographiy in determining n-hexane in the air of workplace were 93.4%～96.1% and the minimum detection limit was 0.5mg/m3. 0.5mg/m3; the relative standard deviation (RSD) of different solubility was 0.4%～1.3%; Linear scope was 0.0～892.8μg/ml; The coexistence of normal heptane and n-pentane with n-hexane in the air did not interfere with the results of determination. Conclusion This method meets the requirement of <Standardard technique for determination of toxic substances in the air of workshop> and it is suitable for determination of n-hexane in the air of workplace.更多还原