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- E-ISSN 2288-8985
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Development of dimethyl disulfide gas CRM and stability test
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2006, v.19 no.6, pp.498-503
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(2006). Development of dimethyl disulfide gas CRM and stability test. Analytical Science and Technology, 19(6), 498-503.
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Abstract
A type of dimethyl disulfide gas CRM in the ppb level was developed for the analysis of tracelevel odorous gas in environmental atmosphere. The concentration of dimethyl disulfide(<TEX>$(CH_3)_2S_2$</TEX>) was <TEX>$10{\mu}mol/mol$</TEX> level in the cylinder filled with nitrogen, 1500 psi. And the variability of the concentration for 2 years was about 0.14% due to the adsorption or instability of <TEX>$(CH_3)_2S_2$</TEX>. The gas standards produced simultaneously in 4 bottles and examined by GC-FID were shown with 0.4%, reproducibility of preparation and 0.25%, standard uncertainty due to weighing and purity. The relative expended uncertainty of 1.1%(95% of confidence level, k
- keywords
- certification of gas CRM, dimethyl disulfide, uncertainty, stability
Reference
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(1981) Gas Analysis-Preparation of Calibration Gas Mixtures-Weighing Methods, ISO 6142 , International Organization for Standardization
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(1993) Guide to the expression of uncertainty in measurement , ISO, Geneva, Switzerland
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(1999) 측정불확도 표현지침, KRISS-99-070-SP , 한국표준과학연구원
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측정불확도 표현지침, KRISS-99-070-SP, (1999) , 한국표준과학연구원
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