YS/T 958-2014 English PDF

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YS/T 958-2014: Methods for chemical analysis of silver. Determination of copper, bismuth, iron, lead, antimony, palladium.selenium and tellurium contents. Inductively coupled plasma-atomic emission spectrometry
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
YS/T 958-2014	239	Add to Cart	3 days	Methods for chemical analysis of silver. Determination of copper, bismuth, iron, lead, antimony, palladium.selenium and tellurium contents. Inductively coupled plasma-atomic emission spectrometry	Valid

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Basic data

Standard ID: YS/T 958-2014 (YS/T958-2014)
Description (Translated English): Methods for chemical analysis of silver. Determination of copper, bismuth, iron, lead, antimony, palladium.selenium and tellurium contents. Inductively coupled plasma-atomic emission spectrometry
Sector / Industry: Nonferrous Metallurgy Industry Standard (Recommended)
Classification of Chinese Standard: H68
Classification of International Standard: 77.120.99
Word Count Estimation: 9,916
Date of Issue: 10/14/2014
Date of Implementation: 4/1/2015
Regulation (derived from): People's Republic of China Ministry of Industry and Information Technology Notice 2014 No. 63; Industry Standard Filing Notice 2014 No. 12 (Overall No. 180)
Issuing agency(ies): Ministry of Industry and Information Technology
Summary: This Standard specifies the method for determination of impurity elements in silver. This Standard applies to the determination of silver impurity elements.

YS/T 958-2014: Methods for chemical analysis of silver. Determination of copper, bismuth, iron, lead, antimony, palladium.selenium and tellurium contents. Inductively coupled plasma-atomic emission spectrometry

---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 silver. Determination of copper, bismuth, iron, lead, antimony, palladium.selenium and tellurium contents. Inductively coupled plasma-atomic emission spectrometry ICS 77.120.99 H68 People's Republic of China Nonferrous Metals Industry Standard Methods for chemical analysis of silver Copper, bismuth, iron, lead, antimony, palladium, selenium And the determination of tellurium content Inductively coupled plasma atomic emission spectrometry Determinationofcopper, bismuth, iron, lead, antimony, paladium, seleniumandteluriumcontents- Issued on. 2015-04-01 2014-10-14 implementation Ministry of Industry and Information Technology of the People's Republic of China released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard by the national non-ferrous metals Standardization Technical Committee (SAC/TC243) centralized. This standard is drafted by. Zijin Mining Group Co., Ltd. Participated in the drafting of this standard. non-ferrous metals and electronic materials analysis and testing center, the Northwest Nonferrous Metal Research Institute, Tongling Nonferrous rare Precious metals branch, note the Great Wall Precious Metals Limited, Xiamen Zijin Mining and Technology Co., Ltd., China Nonferrous Guilin Research Institute of Geology of Mineral Ltd., Shanghai Industrial Technology Heraeus Materials Co., Jiangxi Copper Company Limited. The main drafters of this standard. summer pearl, Luo root, Qiuqing Liang, Qiu Sheng Hong, Li, Ji Yan, Lu Ni, Leilei Liu, Gong Chang together, Dupei Yong, Zhang Yuan, Shi Yihua, Cheng Xiang, Guo Hui. Methods for chemical analysis of silver Copper, bismuth, iron, lead, antimony, palladium, selenium And the determination of tellurium content Inductively coupled plasma atomic emission spectrometry

1 Scope

This standard specifies the method for determination of impurity elements in silver. This standard applies to the determination of impurity elements in silver. Determination of the range in Table 1. Table 1 Measuring element Measuring range w /% range of elements w /% Cu 0.0003 ~ 0.0500 Sb 0.0003 ~ 0.0050 Bi 0.0003 ~ 0.0100 Pd 0.0003 ~ 0.0100 Fe 0.0003 ~ 0.0050 Se 0.0003 ~ 0.0100 Pb 0.0003 ~ 0.0100 Te 0.0003 ~ 0.0100

2 Method summary

Sample nitric acid - a mixed solution of hydrogen peroxide decomposition, with ascorbic acid reduction, reduction of silver again with nitric acid - hydrogen peroxide mixed solution Was resolved with hydrochloric acid precipitation of silver base, collect twice the filtrate was concentrated low temperature, in hydrochloric acid medium, using inductively coupled plasma raw Emission spectrometer Determination of the amount of each element.

3 Reagents and materials

Unless otherwise indicated, used in the analysis confirmed only for the gifted class pure reagents and distilled or deionized water or equivalent purity. 3.1 hydrochloric acid (ρ = 1.19g/mL). 3.2 hydrochloride (11). 3.3 hydrochloride (19). 3.4 hydrochloric acid (119). 3.5 nitric acid (ρ = 1.42g/mL). 3.6 nitric acid (11). Mixed acid 3.7. 1 volume of nitric acid (3.5), 3 volumes of hydrochloric acid (3.1) and 3 volumes of water and mix well. 3.8 30% hydrogen peroxide. 3.9 ascorbic acid solution (0.11g/mL). Weigh accurately 11.00g ascorbic acid, dissolved in water, the volume to 100mL flask with a time of Formulated. 3.10 nitric acid - hydrogen peroxide mixed solution. 1 volume of nitric acid (3.5) and one volume of 30% hydrogen peroxide (3.8) mixed, formulated with time. ......

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