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GB/T 25934.1-2010 English PDF

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GB/T 25934.1-2010: Methods for chemical analysis of high purity gold -- Part 1: Ethyl acetate extraction separation-inductively coupled plasma-atomic emission spectrometry -- Determination of impurity elements contents
Status: Valid

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
GB/T 25934.1-2010	English	148	Add to Cart	1 days [Need to translate]	Methods for chemical analysis of high purity gold -- Part 1: Ethyl acetate extraction separation-inductively coupled plasma-atomic emission spectrometry -- Determination of impurity elements contents	Valid	GB/T 25934.1-2010

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Basic data

Standard ID	GB/T 25934.1-2010 (GB/T25934.1-2010)
Description (Translated English)	Methods for chemical analysis of high purity gold -- Part 1: Ethyl acetate extraction separation-inductively coupled plasma-atomic emission spectrometry -- Determination of impurity elements contents
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	H15
Classification of International Standard	77.040.30
Word Count Estimation	11,152
Date of Issue	2010-12-23
Date of Implementation	2011-09-01
Regulation (derived from)	National Standard Approval Announcement 2010 No.10 (Total No.165)
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 determination of gold in the high impurity elements. This section applies to a high of 99. 999% pure gold in the determination of impurity elements.

GB/T 25934.1-2010: Methods for chemical analysis of high purity gold -- Part 1: Ethyl acetate extraction separation-inductively coupled plasma-atomic emission spectrometry -- Determination of impurity elements contents

---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 high purity gold Part 1. Ethyl acetate extraction separation-inductively coupled plasma-atomic emission spectrometry Determination of impurity elements contents ICS 77.040.30 H15 National Standards of People's Republic of China Methods for chemical analysis of high purity gold Part 1. ethyl acetate extraction separation -ICP-AES method Determination of impurity elements Part 1. Ethylacetateextractionseparation-inductively Issued on. 2010-12-23 2011-09-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 25934 "high pure gold chemical analysis method" is divided into three parts. --- Part 1. ethyl acetate extraction separation-ICP-AES Determination of impurity element contents; Part --- Article 2. ICP-MS- standard addition calibration - Determination of impurity elements in the standard method; --- Part 3. Determination of impurity elements ether extract separated -ICP-AES method. This is Part 1. This part of the National Gold Standardization Technical Committee (SAC/TC379) and focal points. This section is responsible for drafting the Changchun Gold Research Institute. This section Changchun Gold Research Institute, Shenyang Mint, Beijing Nonferrous Metal Research Institute, Beijing General Research Institute of Mining and Metallurgy, the Great Wall of fine gold and silver Refinery, Jiangxi Copper Company Limited, Jiangsu Skyray Instrument Co., Ltd. drafted. The main drafters of this section. Feifei Chen, Huang Rui, Chen Yonghong, Zhang Yu, Wang Yu, Long Shujie, Liu Hong, Li Ai Chang, Li Wanchun, to force, Chen Jie, Bo, Liang subsets, Kay, Li He. Methods for chemical analysis of high purity gold Part 1. ethyl acetate extraction separation -ICP-AES method Determination of impurity elements

1 Scope

GB/T 25934 in the provisions of this part of the impurity elements in high purity gold determination. This section applies to the determination of 99.999% pure gold in high impurity element, measuring element and measuring an amount ranging from Table 1. Table 1 Content range /% Content range /% Content range /% Content range /% Ag 0.00002 ~ 0.00100 Al 0.00002 ~ 0.00100 As 0.00002 ~ 0.00098 Bi 0.00002 ~ 0.00100 Cd 0.00002 ~ 0.00100 Cr 0.00002 ~ 0.00099 Cu 0.00002 ~ 0.00100 Fe 0.00010 ~ 0.00100 Ir 0.00002 ~ 0.00100 Mg 0.00010 ~ 0.00100 Mn 0.00002 ~ 0.00100 Ni 0.00002 ~ 0.00099 Pb 0.00002 ~ 0.00100 Pd 0.00002 ~ 0.00100 Pt 0.00002 ~ 0.00099 Rh 0.00002 ~ 0.00100 Sb 0.00002 ~ 0.00100 Se 0.00002 ~ 0.00100 Te 0.00002 ~ 0.00100 Ti 0.00002 ~ 0.00099 Zn 0.00010 ~ 0.00100

2 principle of the method

Sample with a mixed acid dissolved in hydrochloric acid 1mol/L, the separation of gold extracted with ethyl acetate, the aqueous phase was concentrated into a certain acidity The liquid to be tested, inductively coupled plasma atomic emission spectrometer spectral intensity of each element.

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 ≥18.2MΩ/cm) of water. 3.1 hydrochloric acid (ρ1.19g/mL), pure class distinctions. 3.2 nitrate (ρ1.42g/mL), pure class distinctions. 3.3 sulfate (ρ1.84g/mL), pure class distinctions. 3.4 hydrofluoric acid (ρ1.15g/mL), pure class distinctions. 3.5 hydrochloride (11). 3.6 nitric acid (11). 3.7 hydrochloride (19). 3.8 hydrochloride (111). Mixed acid 3.9. 1 volume of nitric acid (3.2), 3 volumes of hydrochloric acid (3.1) and 3 volumes of water and mix well. 3.10 ethyl acetate. with hydrochloric acid (3.8) and washed 2 to 3 times reserve. 3.11 Standard stock solution. 3.11.1 silver standard stock solution. Weigh 0.1000g metallic silver (mass fraction ≥99.99%) in 100mL beaker, add 10mL Nitric acid solution (3.6), dissolved by heating low temperature, volatilization of oxides of nitrogen, cooled to room temperature, transferred to 100mL volumetric flask, was added 25mL of hydrochloric acid (3.1), dilute to the mark and mix. 1mL solution containing 1mg silver.

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