title>Method for determination of trace Hydrogen in electronic grade gases-Gas-sensitization chromatographic method - SJ 2807-1987 - Chinese standardNet - bzxz.net
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Method for determination of trace Hydrogen in electronic grade gases-Gas-sensitization chromatographic method
Basic Information
Standard ID:
SJ 2807-1987
Standard Name:Method for determination of trace Hydrogen in electronic grade gases-Gas-sensitization chromatographic method
This method is applicable to the determination of trace hydrogen in electronic grade hydrogen, nitrogen, oxygen, argon, helium and ammonia, with a determination range of 0.05 to 37 ppm. SJ 2807-1987 Test method for trace hydrogen in electronic grade gases Gas-sensitive chromatography SJ2807-1987 standard download decompression password: www.bzxz.net
This method is applicable to the determination of trace hydrogen in electronic grade hydrogen, nitrogen, oxygen, argon, helium and ammonia, with a determination range of 0.05 to 37 ppm.
Some standard content:
The standard of the Ministry of Electronic Industry of the People's Republic of China. Determination of trace hydrogen in electronic grade gas. Gas-sensitive chromatography 512897-87 This method is applicable to the determination of trace amounts of hydrogen in electronic grade hydrogen, nitrogen, oxygen, argon and hydrogen, and the determination range is 0.05~37Ppm. Method principlebzxz.net Gas-sensitive semiconductor, also known as gas resistance, is a component composed of semiconductor materials that are particularly sensitive to gases. N-type semiconductor gas-sensitive elements are particularly sensitive to gases such as hydrogen. The adsorption of gases such as hydrogen on the surface of the semiconductor forms a certain bond, changes the distribution of electrons on its surface, and causes a change in conductivity. When the gas escapes, the conductivity returns to its original value. In this way, the conductivity change, that is, the resistance change, can be recorded through a simple circuit. 2 Device and materials a. Gas chromatograph. , the instrument can be 23P-KI gas colorimeter produced by Guangdong Fangyi Instrument Co., Ltd. b. Vortex controller. C. Six-way sample escape valve, with quantitative tube. d. Chromatographic column, stainless steel tube with inner diameter of 3-4mru and length of 1.0-1.5m. c. Recorder; 0-1mV, or 0-10mV. f. Carrier gas: air, dehydrated with silica gel and dehydrogenated with AgX molecular sieve to make its nitrogen content Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.