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Published on: March 21, 2016
[Development and performance evaluation for a solid phase adsorption gas sampler of ammonia in indoor air]
Yu Song1, Suiqian Liu, Qiping Qi
1Institute for Environmental Health and Related Product Safety, China CDC, Beijing 100021, China.
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.
