GB/T 25934.3-2010Methods for the chemical analysis of high-purity gold - Part 3: Determination of impurity elements by diethyl ether extraction separation and inductively coupled plasma atomic emission spectrometry (English PDF)
高纯金化学分析方法 第3部分：乙醚萃取分离ICP-AES法 测定杂质元素的含量
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Issued by
General Administration of Quality Supervision, Inspection and Quarantine; Standardization Administration of the PRC
Level / Type
National · Recommended
Issue date
December 23, 2010
Implementation date
September 1, 2011
Scope
GB/T 25934.3-2010 is the English-translated version of 高纯金化学分析方法 第3部分：乙醚萃取分离ICP-AES法 测定杂质元素的含量.
GB/T 25934.3-2010 is the Chinese standard "Methods for the chemical analysis of high-purity gold - Part 3: Determination of impurity elements by diethyl ether extraction separation and inductively coupled plasma atomic emission spectrometry".
Its scope clause reads: This section GB/T 25934 provides for high purity gold in silver, copper, iron, lead, antimony, bismuth, palladium, magnesium, tin, chromium, nickel, manganese, aluminum, platinum, rhodium, iridium, Zinc, titanium, cadmium, silicon and arsenic content determination.
This section applies to high gold in silver, copper, iron, lead, antimony, bismuth, palladium, magnesium, tin, chromium, nickel, manganese, aluminum, platinum, rhodium, iridium, zinc, titanium, cadmium, arsenic and silicon Determination of the amount.
Determination of the range in Table 1.
Table 1 Element mass fraction /% elemental mass fraction /% elemental mass fraction /% elemental mass fraction /% Ag 0.00002 ~ 0.00047 Ni 0.00002 ~ 0.00047 Pt 0.00002 ~ 0.00048 Zn 0.00002 ~ 0.00044 Cu 0.00002 ~ 0.00047 Pd 0.00002 ~ 0.00049 Sn 0.00003 ~ 0.00032 Cd 0.00002 ~ 0.00048 Pb 0.00005 ~ 0.00048 Al 0.00005 ~ 0.00045 Ti 0.00002 ~ 0.00049 Ir 0.00006 ~ 0.00052 Fe 0.00002 ~ 0.00048 Mn 0.00002 ~ 0.00047 Cr 0.00002 ~ 0.00048 Si 0.00003 ~ 0.00027 Sb 0.00004 ~ 0.00043 Mg 0.00002 ~ 0.00046 Rh 0.00002 ~ 0.00050 As 0.00005 ~ 0.00046 Bi 0.00002 ~ 0.00043. Its clauses include method summary; reagents.
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Document preview — GB/T 25934.3-2010
National Standard of the People's Republic of China
- ICS
- 77.040.30
- Classification
- H 15
Issued by: General Administration of Quality Supervision, Inspection and Quarantine; Standardization Administration of the PRC
Contents
- Foreword
- 1 Scope
- 2 Method summary
- 3 Reagents
1 Scope
This section GB/T 25934 provides for high purity gold in silver, copper, iron, lead, antimony, bismuth, palladium, magnesium, tin, chromium, nickel, manganese, aluminum, platinum, rhodium, iridium,
Zinc, titanium, cadmium, silicon and arsenic content determination.
This section applies to high gold in silver, copper, iron, lead, antimony, bismuth, palladium, magnesium, tin, chromium, nickel, manganese, aluminum, platinum, rhodium, iridium, zinc, titanium, cadmium, arsenic and silicon
Determination of the amount. Determination of the range in Table 1.
Table 1
Element mass fraction /% elemental mass fraction /% elemental mass fraction /% elemental mass fraction /%
Ag 0.00002 ~ 0.00047 Ni 0.00002 ~ 0.00047 Pt 0.00002 ~ 0.00048 Zn 0.00002 ~ 0.00044
Cu 0.00002 ~ 0.00047 Pd 0.00002 ~ 0.00049 Sn 0.00003 ~ 0.00032 Cd 0.00002 ~ 0.00048
Pb 0.00005 ~ 0.00048 Al 0.00005 ~ 0.00045 Ti 0.00002 ~ 0.00049 Ir 0.00006 ~ 0.00052
Fe 0.00002 ~ 0.00048 Mn 0.00002 ~ 0.00047 Cr 0.00002 ~ 0.00048 Si 0.00003 ~ 0.00027
Sb 0.00004 ~ 0.00043 Mg 0.00002 ~ 0.00046 Rh 0.00002 ~ 0.00050 As 0.00005 ~ 0.00046
Bi 0.00002 ~ 0.00043
2 Method summary
Sample with a mixed acid decomposition, in 1mol/L HCl medium, after separation of gold extracted with ether, the aqueous phase was concentrated HCl medium prepared test solution
Liquid, using inductively coupled plasma atomic emission spectrometer silver, copper, iron, lead, antimony, bismuth, palladium, magnesium, tin, chromium, nickel, manganese, aluminum, platinum, rhodium,
Iridium, zinc, titanium, cadmium, arsenic, and the amount of silicon.
3 Reagents
Unless otherwise indicated, used in the analysis confirmed only for the gifted class pure reagents and double distilled water or equivalent purity (resistivity
>=18.2Mohm/cm) of water.
3.1
hydrochloride (rho1.19g/mL).
Nitrate 3.2 (rho1.42g/mL).
3.3
sulfate (rho1.84g/mL).
3.4
hydrofluoric acid (rho1.15g/mL).
3.9
hydrochloride (111).
3.10
hydrochloric acid (129).
Mixed acid 3.11. 1 volume of nitric acid (3.2), 3 volumes of hydrochloric acid (3.1) and one volume of water and mix well.
3.12 ether
with hydrochloric acid solution (3.9) and washed 2 to 3 times reserve. […]
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 19 pages — is available in the English PDF.
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Related Standards
GB/T 25933-2010 — High-purity gold
GB/T 6682-2008 — Water for analytical laboratory use - Specification and test methods
GB/T 8170-2008 — Rules of rounding off for numerical values & expression and judgement of limiting values
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