Tan Qitao, Zhang Zhaozhi, Yan Dongjian
Zibo Hospital for Occupational Diseases Control and Treatment, Zibo 255000, China.
Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi. 2015 Feb;33(2):146-8.
To establish a method for the determination of N-butylbenzene in the workplace atmosphere by gas chromatography.
N-butylbenzene in the workplace atmosphere was collected by activated charcoal tube, desorbed using carbon disulfide, and determined by capillary column gas chromatography.
The method showed a linear relationship within the range of 0∼100 µg/ml. The regression equation was y = 0.870x-0.014, with the correlation coefficient r being 0.999 9. The limit of detection was 0.32 µg/ml. The minimum detectable concentration was 0.21 mg/m³ (with sampled air volume of 1.5 L). The average spike recovery rate was 97.8%∼102.6%. The within-run precision was 3.06% and the between-run precision was 3.64%. The rate of average desorption was 99.6%. The breakthrough volume was 6.34 mg. The sampling efficiency was 100%. The samples could be stored for at least 7 days at room temperature.
All parameters of the method meet the requirements of GBZ/T 210.4-2008 "Guide for establishing occupational health standards-Part 4 Determination methods of air chemicals in workplace" and can be applied for the determination of N-butylbenzene in workplace atmosphere.
建立气相色谱法测定工作场所空气中正丁基苯的方法。
用活性炭管采集工作场所空气中的正丁基苯，二硫化碳解吸后，采用毛细管柱气相色谱法测定。
该方法在0～100μg/ml范围内呈线性关系，回归方程为y = 0.870x - 0.014，相关系数r为0.999 9。检出限为0.32μg/ml，最低检出浓度为0.21mg/m³（采气1.5L）。平均加标回收率为97.8%～102.6%，批内精密度为3.06%，批间精密度为3.64%。平均解吸率为99.6%，穿透容量为6.34mg，采样效率为100%。样品在室温下至少可保存7天。
该方法各项参数符合GBZ/T 210.4-2008《职业卫生标准制定指南 第4部分：工作场所空气中化学物质测定方法》的要求，可用于工作场所空气中正丁基苯的测定。
