다중 모세관을 이용한 교정용 표준가스의 제조 : 불확도와 유효성 평가
Generation of calibration standard gases using capillary gas divider : uncer-tainty measurement and method validation
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Abstract
Calibration gas mixtures were prepared using dynamic volumetric method according to ISO 6145-5 and the uncertainty was evaluated. Ten identical capillaries with 0.25 mm in inner diameter and 50 cm inthat passes parent gas and that passes balance gas through. Capillaries were made of Teflon which had goodchemical stability against adsorption of gaseous substances. Mechanical valves were introduced in this systemin order to minimize the thermal effect of solenoid valves. Concentration of prepared gases were comparedwith master grade standard gases in cylinders made by RiGAS Co. and calibration of the instrument werecompleted using comparison method according to ISO 6143. Experimental results showed that the coefficient. Corresponding authorPhone : +82-(0)19-699-0898 Fax : +82-(0)42-935-8814E-mail: membrane@rigas.co.kr370 ...................Analytical Science & Technologyof variance of diluted oxygen standard gases showed less then 0.2% in most dilution range, that of dilutedhydrogen sulfide standard gases showed less then 1.0%. Therefore, it is proven that the standard gases preparedby this system are appropriate to be used as a calibration standards in ambient monitoring, etc.
참고문헌 (13)
- Polski Komitet Normalizacyjny, "ISO 6142 Gas Analysis-Preparation of calibration gas mixtures-Gravimetric method" (2006), Polski Komitet Normalizacyjny
- Polski Komitet Normalizacyjny, "ISO 6144 Gas analysis-Preparation of calibration gas mixtures-Static volumetric method" (2006), Polski Komitet Normalizacyjny
- Polski Komitet Normalizacyjny, "ISO 6145 Gas Analysis-Preparation of calibration gas mixtures using dynamic volumetric methods" (2006), Polski Komitet Normalizacyjny
- Polski Komitet Normalizacyjny, "ISO 6145-2 Gas analysis-Preparation of calibration gas mixtures using dynamic volumetric methods" (2008), Polski Komitet Normalizacyjny
- Polski Komitet Normalizacyjny, "ISO 6145-4 Gas analysis-Preparation of calibration gas mixtures using dynamic volumetric methods" (2008), Polski Komitet Normalizacyjny
- Polski Komitet Normalizacyjny, "ISO 6145-5 Gas analysis-Preparation of calibration gas mixtures using dynamic volumetric methods" (2008), Polski Komitet Normalizacyjny
- Polski Komitet Normalizacyjny, "ISO 6145-6 Gas analysis-Preparation of calibration gas mixtures using dynamic volumetric methods" (2008), Polski Komitet Normalizacyjny
- Polski Komitet Normalizacyjny, "ISO 6145-7 Gas analysis-Preparation of calibration gas mixtures using dynamic volumetric methods" (2008), Polski Komitet Normalizacyjny
- Polski Komitet Normalizacyjny, "ISO 6145-8 Gas analysis-Preparation of calibration gas mixtures using dynamic volumetric methods" (2008), Polski Komitet Normalizacyjny
- Polski Komitet Normalizacyjny, "ISO 6145-9 Gas analysis-Preparation of calibration gas mixtures using dynamic volumetric methods" (2008), Polski Komitet Normalizacyjny
- Polski Komitet Normalizacyjny, "ISO 6145-10 Gas analysis-Preparation of calibration gas mixtures using dynamic volumetric methods" (2008), Polski Komitet Normalizacyjny
- Polski Komitet Normalizacyjny, "ISO 6143 Gas Analysis-Comparison methods for determining and checking the composition of calibration gas mixtures." (2006), Polski Komitet Normalizacyjny
- Berlin Beuch, "Guide 35 Certification of reference materials-General and statistical principles" (1989)