KMID : 0385520130260030165
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Analytical Science & Technology 2013 Volume.26 No. 3 p.165 ~ p.173
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Evaluation of confidence for measurement of VOCs in indoor air
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Kim Myoung-Ock
Kim Young-Lan Hong Suk-Young Lim Hyun-Woo Choe Seoung-hun Lee Won-Seok Han Jin-Seok Kim Kum-Hee
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Abstract
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To establishment of PT Program for Indoor air quality field that manufacture of confidential development PTMs (proficiency testing materials) and examined of proficiency testing evaluation included sampling process whether or not that is valid. Confirmation of homogeneity and stability of PTMs prepared. PTMs were confirmed to be homogeneous enough to be used as proficiency testing materials since withinbottle homogeneities of the RMs were lower than 0.3 times of targeted standard deviation of proficiency testing. The result of this study showed that the Robust RSD of proficiency testing for VOCs (volatile organic compounds) appeared 23~43% in concentration of 50~320 ¥ìg/m3 for Method A(Distribution by adsorption in Tenax-tube of VOCs), but less 13~42% in concentration of 200~1200 ¥ìg/m3, 16~31% in concentration of
100~450 ¥ìg/m3 for Method B (distribution by VOCs of gas phase in 10L Tedalr bag), C (directly sampling of cylinder with high pressure) respectively. The result of this study showed that method C with sampling is most adequate to the proficiency testing for VOCs in indoor air.
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KEYWORD
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indoor air quality, proficiency testing, reference materials, VOCs,
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