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GB/T 5831-2011 English PDF

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GB/T 5831-2011: Determination of trace oxygen in the gases -- Colorimetric method
Status: Valid

GB/T 5831: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 5831-2011English259 Add to Cart 3 days [Need to translate] Determination of trace oxygen in the gases -- Colorimetric method Valid GB/T 5831-2011
GB/T 5831-1986English839 Add to Cart 6 days [Need to translate] Determination of trace oxygen in the gases--Colorimetric method Obsolete GB/T 5831-1986

PDF similar to GB/T 5831-2011


Standard similar to GB/T 5831-2011

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Basic data

Standard ID GB/T 5831-2011 (GB/T5831-2011)
Description (Translated English) Determination of trace oxygen in the gases -- Colorimetric method
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard G86
Classification of International Standard 71.040.40
Word Count Estimation 11,191
Date of Issue 2011-12-30
Date of Implementation 2012-10-01
Older Standard (superseded by this standard) GB/T 5831-1986
Regulation (derived from) Announcement of Newly Approved National Standards No. 23 of 2011
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary This standard specifies the trace oxygen gas colorimetric method. This standard applies to hydrogen, nitrogen, argon, helium, neon, krypton, xenon, methane and other non- ammonia complex with a monovalent copper ions react with ammonia gas oxygen content. Measuring range: 0. 5 �� 10 (-6) ~ 1000 �� 10 (-6) (volume fraction).

GB/T 5831-2011: Determination of trace oxygen in the gases -- Colorimetric method

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Determination of trace oxygen in the gases. Colorimetric method ICS 71.040.40 G86 National Standards of People's Republic of China Replacing GB/T 5831-1986 Determination of trace oxygen gas colorimetry Issued on. 2011-12-30 2012-10-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

In accordance with this standard GB/T 1.1-2009 given rule drafting. This standard replaces GB/T 5831-1986 "Determination of trace oxygen gas colorimetry." Compared with GB/T 5831-1986, in addition to knitting Series modifications outside the main technical changes are as follows. --- Remove the general considerations (see the 1986 version of Chapter 7); --- The 1986 version of Appendix B (series standard gradation table) was transferred to the text (see 53, 1986 edition of Appendix B.); --- Remove the appendix "gas volume correction coefficient K value table" (see the 1986 edition of Appendix C); --- The 1986 version of the non-statutory units of measurement is amended as legal units of measurement. The standard proposed by China Petroleum and Chemical Industry Association. This standard by the National Standardization Technical Committee on Gas (SAC/TC206) centralized. This standard was drafted. Southwest Chemical Industry Research and Design Institute. The main drafters of this standard. He Daoshan, Chen Yali, Zhoupeng Yun, Zhang, on behalf of Gao. Determination of trace oxygen gas colorimetry

1 Scope

This standard specifies the colorimetric determination of trace gases oxygen. This standard applies to hydrogen, nitrogen, argon, helium, neon, krypton, xenon, methane and other gases does not occur with a monovalent copper ammonia complex ion and ammonia reactions Determination of oxygen content. Measuring range. 0.5 × 10-6 ~ 1000 × 10-6 (volume fraction).

2 principle of the method

In a sealed analyzer sample gas oxygen colorless monovalent copper ammonia solution quantitatively reacted with divalent copper blue ammonia solution, and standard Levels Associate visual colorimetric. Than by the colorimetric selected standard color gamut equivalent to the amount of oxygen in the sample gas is the volume of oxygen in the sample gas The content (volume fraction). Monovalent copper reacts with the oxygen is as follows. [Cu2 (NH3) 4] Cl2 2NH4OH 2NH4Cl 1/2O2 = 2 [Cu (NH3) 4] Cl2 3H2O According to the reaction equation, 0.05mol/L copper sulfate solution 1mL equivalent to 20 ℃, under 101.3kPa state 0.300mL oxygen. 0.05 1000 × 11.2 × 1000 2 × 273 = 0.300mL Distinguished by the color scale and reasonable gradation difference with 0.05mol/L sulfate standard solutions prepared in different amounts Levels. Each standard Quasi-Levels equivalent amount of oxygen according to equation (1). V1 = 0.300V2 (1) Where. Vl --- standard gradation corresponding to the amount of oxygen in milliliters (mL of); --- Volume V2 of each standard solution was added Levels of 0.05mol/L of copper sulfate solution, in milliliters (mL). 3 instrument, apparatus 3.1 device Recommended by the analyzer means, reservoir bottles, suction bottles composition, see Appendix A in Figure A.1. 3.2 oxygen analyzer Analyzer and processed refer size See Appendix A in Figure A.2. Analyzer firing hard glass, glass wall thickness of 1mm ~ 2mm. Volume analyzer (1,2,6 closed closed volume after the piston) is determined by the oxygen content of the sample gas. When the sample gas oxygen content When less than 5 × 10-6 (volume fraction), the volume of the analyzer is not less than 3000mL; when the sample gas oxygen content of less than 100 × 10-6 (body Integral number), the volume of the analyzer is not less than 1500mL; when the sample gas oxygen content of less than 1000 × 10-6 (volume fraction), analysis The volume of about 500mL. Volume analyzer with the weighing method for the determination of water, after adding to one decimal place, the volume V3 (mL) is calculated by the formula (2). V3 = (G2-G1)/ρt (2)

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