YS/T 645-2007Method for analysis of gold compounds. Determination of gold content. Potentiometric titration using ferrous sulfate (English PDF)
金化合物分析方法 金量的测定 硫酸亚铁电位滴定法
YS/T 645 | Evolution and historical versions
| Std ID | Title | Status |
|---|---|---|
| YS/T 645-2017 | Method for analysis of gold compounds. Determination of gold content. Potentiometric titration using ferrous sulfate | Valid |
| YS/T 645-2007 | Method for analysis of gold compounds. Determination of gold content. Potentiometric titration using ferrous sulfate | Obsolete |
YS/T 645-2007 is obsolete. It has been replaced by YS/T 645-2017. This page sells the obsolete edition, for projects and contracts that still cite it.
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Issued by
National Development and Reform Commission
Level / Type
National · Recommended
Issue date
April 13, 2007
Implementation date
October 1, 2007
Scope
YS/T 645-2007 is the English-translated version of 金化合物分析方法 金量的测定 硫酸亚铁电位滴定法.
YS/T 645-2007 is the Chinese industry standard "Method for analysis of gold compounds. Determination of gold content. Potentiometric titration using ferrous sulfate".
It was issued on April 13, 2007 by the National Development and Reform Commission, and took effect on October 1, 2007. It is obsolete: it has been replaced by YS/T 645-2017.
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Document preview — YS/T 645-2007
National Standard of the People's Republic of China
Issued by: National Development and Reform Commission
Contents
- Document data
1 Document data
Sector: National Recommended (industry standard).
Issuing body: National Development and Reform Commission.
Date of issue: 2007-04-13.
Date of implementation: 2007-10-01.
Status: obsolete, replaced by YS/T 645-2017.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — all pages — is available in the English PDF.
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Related Standards
YS/T 1115.10-2026 — Chemical analysis methods of copper, lead and zinc ores and tailings - Part 10: Determination of gold, silver, molybdenum, arsenic, tungsten, bismuth, gallium, indium, thallium, selenium, tellurium and germanium contents - Inductively coupled plasma mass spectrometry
YS/T 1115.7-2026 — Methods for chemical analysis of copper, lead, zinc ores and tailings - Part 7: Determination of molybdenum content - Thiocyanate spectrophotometric method
YS/T 1115.8-2026 — Methods for chemical analysis of copper, lead, zinc ores and tailings - Part 8: Determination of fluorine content - Ion-selective electrode method and ion chromatography
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YS/T 645-2007
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