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KMID : 0895420000100010126
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Journal of Korean Society of Occupational and Enviromental Hygiene
2000 Volume.10 No. 1 p.126 ~ p.146
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Analytical method for analyzing formaldehyde using 2 , 4 - DNPH and gas chromatography / FID , NPD
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정지연/Jeong, Jee Yeon
오세민/이광용/박승현/Oh, Se Min/Yi, Gwang Yong/Park, Seung Hyung
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Abstract
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To develop and evaluate formaldehyde measurement method using 2,4-dinitro -phenylhydrazine (2,4-DNPH) coated sampler and gas chromatography, laboratory test and field test were conducted. Results of this study are as follows. Limit of detection(LOD) of measurement methods, HPLC-UVD, GC-NPD and GC-FID, is 0.008㎍/㎖, 0.060㎍/㎖, 0.472㎍/㎖ respectively. Coefficiency of measurement methods, HPLC-FVD, GC-NPD and GC-FID, is 0.008, 0.009, 0.020 respectively. Desorption efficiency of sep-pak xposure aldehyde sampler and sorbent sample tube is 1.05(range : 0.99 - 1.12), 1.02(range : 0.99 - 1.06) respectively. Samples of sorbent sample tube and sep-pak xposure aldehyde sampler turned out to be stored at refrigerator, according to storage test results. Measurement methods of HPLC-UVD, GC-NPD, GC-FID, according to results of precision for the combined sampling and analytical procedure, became acceptable to OSHA evaluation standard. Field test using exposure chamber met the NIOSH overall uncertainty recommendation(less than 25%). Overall uncertainty of Sepak-HPLC(UVD), Tube-GC(NPD), Tube-GC(F)D) is 11.0% - 17.0%.
Consequently gas chromatography(GC-NPD, GC- FID) and high performance liquid chromatography(EPA TO-11) using 2.4-DNPH coated sampler for formaldehyde measurement turned out to be suitable to measure personal formaldehyde exposure at workplaces.
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