GB/T 4325.21-2013 English PDFUS$169.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 4325.21-2013: Methods for chemical analysis of molybdenum -- Part 21: Determination of carbon content and sulfur content -- High frequency combustion-infrared absorption method Status: Valid GB/T 4325.21: Historical versions
Basic dataStandard ID: GB/T 4325.21-2013 (GB/T4325.21-2013)Description (Translated English): Methods for chemical analysis of molybdenum -- Part 21: Determination of carbon content and sulfur content -- High frequency combustion-infrared absorption method Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: H63 Classification of International Standard: 77.120.99 Word Count Estimation: 7,713 Older Standard (superseded by this standard): GB/T 4325.23-1984; GB/T 4325.27-1984 Regulation (derived from): National Standards Bulletin 2013 No. 6 Issuing agency(ies): General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 amount of carbon and sulfur in molybdenum content. This section applies to molybdenum powder, molybdenum, molybdenum trioxide and ammonium in the amount of carbon and sulfur contents. Measuring range: C: 0. 0005% to 0. 30%, S: GB/T 4325.21-2013: Methods for chemical analysis of molybdenum -- Part 21: Determination of carbon content and sulfur content -- High frequency combustion-infrared absorption 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. Methods for chemical analysis of molybdenum Part 21... Determination of carbon content and sulfur content High frequency combustion-infrared absorption method ICS 77.120.99 H63 National Standards of People's Republic of China Replacing GB/T 4325.23-1984, GB/T 4325.27-1984 Chemical analysis of molybdenum Part 21. the amount of carbon and sulfur contents - Frequency combustion infrared absorption method Part 21. Determinationofcarboncontentandsulfurcontent- Issued on. 2013-05-09 2014-02-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released ForewordGB/T 4325 "chemical analysis of molybdenum" is divided into 26 parts. --- Part 1. Determination of lead content - Graphite furnace atomic absorption spectrometry; --- Part 2. Determination of cadmium content by flame atomic absorption spectrometry; --- Part 3. Determination of bismuth content - atomic fluorescence spectrometry; --- Part 4. Determination of tin content by atomic fluorescence spectrometry; --- Part 5. Determination of antimony content - Atomic Fluorescence Spectrometry; --- Part 6. Determination of arsenic content by atomic fluorescence spectrometry; --- Part 7. Determination of the amount of iron phenanthroline spectrophotometry and inductively coupled plasma atomic emission spectrometry; --- Part 8. Determination of cobalt content of cobalt reagents spectrophotometry and flame atomic absorption spectrometry; --- Part 9. Determination of the amount of nickel dimethylglyoxime spectrophotometric method and the flame atomic absorption spectrometry; --- Part 10. Determination of copper content - Flame atomic absorption spectrometry; --- Part 11. Determination of aluminum content of chromium azure S spectrophotometry and inductively coupled plasma atomic emission spectrometry; --- Part 12. silicon content - Inductively coupled plasma atomic emission spectrometry; --- Part 13. Determination of calcium content by flame atomic absorption spectrometry; --- Part 14. Determination of magnesium content - Flame atomic absorption spectrometry; --- Part 15. Determination of sodium content by flame atomic absorption spectrometry; --- Part 16. Determination of potassium content by flame atomic absorption spectrometry; --- Part 17. Determination of titanium content of two methane antipyrine spectrophotometry and inductively coupled plasma atomic emission spectrometry; --- Part 18. Determination of the amount of vanadium tantalum reagent spectrophotometry and inductively coupled plasma atomic emission spectrometry; --- Part 19. Determination of chromium content of diphenyl carbon acid dihydrazide spectrophotometry; --- Part 20. Determination of manganese content by flame atomic absorption spectrometry; --- Part 21. Determination of the amount of carbon and sulfur content of the high-frequency combustion infrared absorption method; --- Part 22. Determination of phosphorus content - Molybdenum blue spectrophotometric method; --- Part 23. Determination of the oxygen and nitrogen inert gas fusion infrared absorption method - thermal conductivity method; --- Part 24. Determination of tungsten content - Inductively coupled plasma atomic emission spectrometry; --- Part 25. Determination of the amount of hydrogen in the inert gas fusion infrared absorption method/thermal conductivity method; --- Part 26. aluminum, magnesium, calcium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc, arsenic, cadmium, tin, antimony, tungsten, lead and bismuth content - Inductively coupled Co-Plasma Mass Spectrometry. This section GB/T Part of 214,325. This section drafted in accordance with the rules given in GB .T1.1-2009. This Part replaces GB/T 4325.23-1984 "chemical analysis of molybdenum - The combustion - determination of sulfur content conductance method" and GB/T 4325.27- 1984 "chemical analysis of molybdenum - The combustion - coulometric titration method for the determination of carbon content." This portion of the GB/T 4325.23-1984 and GB/T 4325.27-1984 comparison, the main technical changes are as follows. --- Combustion - Conductivity Determination of sulfur content and combustion - coulometric titration method for the determination of carbon content were merged; --- The combustion - coulometric titration method and combustion - conductance method to the associated high frequency combustion infrared absorption measurement method; --- Increased repeatability terms; --- Increasing the test report. The non-ferrous metal part by the National Standardization Technical Committee (SAC/TC243) centralized. This section drafted by. China Molybdenum Group Co., Ltd., Beijing Mining Research Institute, Guangzhou Nonferrous Metal Research Institute. The main drafters of this section. Tian Yonghong, Chen Feng group Xuqiong Jie, Xu Xiaoyan, seeking Tao Jiang, Xiao new, Zhuang Yichun, Wang Jin. This part of the standard replaces the previous editions are. --- GB/T 4325.23-1984, GB/T 4325.27-1984. Chemical analysis of molybdenum Part 21. the amount of carbon and sulfur contents - Frequency combustion infrared absorption method1 ScopeGB/T 4325 This section provides for the determination of molybdenum in the amount of carbon and sulfur content. This section applies to molybdenum powder, molybdenum, molybdenum trioxide and ammonium molybdate measured the amount of carbon, sulfur content. Measurement range. Carbon. 0.0005% 0.30%; S. 0.0005% to 0.30%.2 Method summarySample high frequency induction furnace combustion oxygen gas stream is heated to produce carbon dioxide and sulfur dioxide, the carrier of oxygen to the infrared analyzer Testing room, absorbing carbon dioxide and sulfur dioxide, respectively, of a particular wavelength of infrared energy absorbed is proportional to the concentration of energy and carbon and sulfur, according to inspection Detector receiving energy changes measured the amount of carbon and sulfur content.3 Reagents and materials3.1 iron flux. wFe≥99.8%, wC≤0.0005%, wS≤0.0005%, particle size ≤1.25mm. 3.2 tungsten tin flux. wC≤0.0010%, wS≤0.0003%, granularity ≤1.4mm. 3.3 carbon, sulfur standard substance (or standard sample). to be tested like carbon and sulfur content similar congeners. 3.4 Oxygen. volume fraction of not less than 99.95%. 3.5 magnesium perchlorate. dry, granular or flaky. 3.6 caustic soda asbestos. granular. 3.7 quartz wool. 3.8 sulfur trioxide absorber. 3.9 platinized silica gel. a granular form. 3.10 crucible tongs. Before and after use should be higher than 1100 ℃ high temperature in a high temperature furnace burning 8h or burning to a blank value in oxygen minimum cooling. 3.11 ceramic crucible Stored in a desiccator.4 instruments and equipment4.1 infrared detection system. includes a high frequency induction furnace, the intake pipe purifying reagent to detect gas heater catalyst, sulfur trioxide absorption tube, infrared Line detectors, computers and software control systems. 4.2 oxygen cylinders and regulators. 4.3 Balance. dividing the value of 0.1mg.5 SampleMolybdenum samples sintered product is machined into crumb-like, skin should be removed during processing and prevent pollution. Washed with acetone, if necessary. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 4325.21-2013_English be delivered?Answer: Upon your order, we will start to translate GB/T 4325.21-2013_English as soon as possible, and keep you informed of the progress. 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