[Development and performance evaluation for a solid phase adsorption gas sampler of formaldehyde in indoor air].
OBJECTIVE
We developed a solid phase adsorption gas sampler, which is suitable for collection and analysis of indoor air formaldehyde.


METHODS
This solid phase adsorption gas sampler is composed of two parts, a support part made of a glass tube covered silica-gel stopper on ports, an absorbent part in glass tube made of surface denatured synthetic fibre coated formaldehyde absorbent. We evolved its performance, and established an method for sampling and determination formaldehyde in indoor air with the gas sampler.


RESULTS
For the solid phase adsorption gas sampler, the collection efficiency was 98.7%, and the desorption efficiency was 98.6%. The variation coefficients of sampling was 4.02% (n = 10). The above method was compared with the standard method (GB/T 16129-1995 ), the results showed no significant difference between the two methods.


CONCLUSIONS
This solid phase adsorption gas sampler can be used for sampling and determination formaldehyde in indoor air.
Yao
Xiao-Yuan
XY
Institute for Environmental Health and Related Product Safety, China CDC, Beijing 100021, China.
Wang
Wen
W
Chen
Yuan-Li
YL
Wang
Yan
Y
Qi
Qiping
Q
D000393:Air Pollutants / Q000032:analysis*; D016902:Air Pollution, Indoor / Q000032:analysis*; D002681:China; D004784:Environmental Monitoring / Q000295:instrumentation / Q000379:methods; D005557:Formaldehyde / Q000032:analysis*; D052617:Solid Phase Microextraction / Q000295:instrumentation* / Q000379:methods; D013048:Specimen Handling / Q000295:instrumentation / Q000379:methods
D000393:Air Pollutants; D005557:Formaldehyde