[1]张志胜,程永章,王伟.活性炭吸附法测定工作场所空气中的砷化氢[J].中国安全生产科学技术,2015,11(12):139-143.[doi:10.11731/j.issn.1673-193x.2015.12.022]
ZHANG Zhi-sheng,CHENG Yong-zhang,WANG Wei.Determination of arsine in workplace air by active carbon adsorption[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2015,11(12):139-143.[doi:10.11731/j.issn.1673-193x.2015.12.022]
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活性炭吸附法测定工作场所空气中的砷化氢
ZHANG Zhi-sheng,CHENG Yong-zhang,WANG Wei.Determination of arsine in workplace air by active carbon adsorption[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2015,11(12):139-143.[doi:10.11731/j.issn.1673-193x.2015.12.022]
《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]
- 卷:
- 11
- 期数:
- 2015年12期
- 页码:
- 139-143
- 栏目:
- 职业安全卫生管理与技术
- 出版日期:
- 2015-12-30
文章信息/Info
- Title:
- Determination of arsine in workplace air by active carbon adsorption
- 文章编号:
- 1673-193X(2015)-12-0139-05
- Keywords:
- workplace; arsine; atomic fluorescence; active carbon
- 分类号:
- X936
- 文献标志码:
- A
- 摘要:
- 为了获得一种简便、快速、准确的工作场所空气中砷化氢的采集测定方法，利用活性炭吸附，5%HCl 30℃超声提取30min进行解吸，原子荧光光谱法测定工作场所中的砷化氢。在优化实验条件下，采样效率为98%～100%，解吸效率为90%～99%，砷化氢含量在0.0～16.0μg /L范围内呈线性关系，相关系数达到r=0.999 9，检出限为0.04μg/L，按采集1.5L空气计算，最低检出浓度为0.000 7mg/m3，回收率为96%～98%，精密度为1.2%～1.5%，重现性为1.6%～2.3%，样品15℃～20℃可保存15天。活性炭吸附法方便准确，灵敏度高，并有较高的回收率和采样效率，可作为职业卫生检测使用。
- Abstract:
- In order to obtain a convenient, fast and accurate method for the determination of arsine in workplace air, it was adsorbed by active carbon, then desorbed by ultrasonic extraction under the environment of 5% HCL and 30℃ for 30 min, and determined by atomic fluorescence spectrometry. It showed that under the optimized experimental conditions, the sampling efficiency was 98%-100%, the desorption efficiency was 90-99%. When the content of arsine ranged from 0.0-16.0μg /L, there was good linearity, and the correlation coefficient r=0.9999. The lowest detection limit was 0.04μg/L, and the lowest examination density was 0.0007mg/m3 with collecting 1.5L air. The rate of recovery was 96%-98%,the precision was 1.2%-1.5%, the reproducibility was 1.6%-2.3%, and the samples can be preserved for at least 15 day at 15℃-20℃. The method is convenient, accurate and sensitive with high rate of recovery and sampling efficiency, and it is suitable for occupational health determination.
参考文献/References:
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［8］陈桂贻，汤利民，陈淑怡，何春兰.一种计算采样效率K的新方法—K=(a-b)/a×100%法［J］.劳动保护科学技术,2000,20（4）：54-56
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