[室内空气中氨固相吸附气体采样器的研制与性能评价]
[Development and performance evaluation for a solid phase adsorption gas sampler of ammonia in indoor air].
作者信息
Song Yu, Liu Suiqian, Qi Qiping
机构信息
Institute for Environmental Health and Related Product Safety, China CDC, Beijing 100021, China.
出版信息
Wei Sheng Yan Jiu. 2007 May;36(3):289-91.
OBJECTIVE
To develop a solid phase adsorption gas sampler, which was suitable for collection and analysis of ammonia in indoor air.
METHODS
This solid phase adsorption gas sampler was composed of two parts, a support part made of a glass tube, an absorbent part in glass tube made of fiber coated ammonia absorbent. For its performance, established a method for sampling ammonia in indoor air with the gas sampler was evaluated. The associated samples were determinated with indophenol blue photometric method.
RESULTS
For the solid phase adsorption gas sampler, the collection efficiency was 97.96% , and the desorption efficiency was 97.91% . The variation coefficients of sampling was 3.72% ( n = 10). The recovery rates varied from 95.84% to 103.28% . The above method was compared with the standard method, the results showed no significant difference between two methods.
CONCLUSION
This solid phase adsorption gas sampler could be used for sampling and determination ammonia in indoor air.
目的
研制一种适用于采集和分析室内空气中氨气的固相吸附气体采样器。
方法
该固相吸附气体采样器由两部分组成，一部分是由玻璃管制成的支撑部分，另一部分是玻璃管内由涂覆了氨气吸收剂的纤维制成的吸收部分。针对其性能，建立了用该气体采样器采集室内空气中氨气的方法并进行评估。相关样品采用靛酚蓝分光光度法测定。
结果
该固相吸附气体采样器的采集效率为97.96%，解吸效率为97.91%。采样的变异系数为3.72%（n = 10）。回收率在95.84%至103.28%之间。将上述方法与标准方法进行比较，结果表明两种方法之间无显著差异。
结论
该固相吸附气体采样器可用于室内空气中氨气的采样和测定。
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