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YS/T 1084.1-2015 (YST 1084.1-2015)

YS/T 1084.1-2015_English: PDF (YST1084.1-2015)
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YS/T 1084.1-2015English229 Add to Cart Days<=3 Methods for chemical analysis of crude selenium - Part 1: Determination of gold content - Fire assay gravimetric and flame atomic absorption spectrmetric method method YS/T 1084.1-2015 Valid YS/T 1084.1-2015
 

BASIC DATA
Standard ID YS/T 1084.1-2015 (YS/T1084.1-2015)
Description (Translated English) Methods for chemical analysis of crude selenium. Part 1: Determination of gold content. Fire assay gravimetric and flame atomic absorption spectrmetric method
Sector / Industry Nonferrous Metallurgy Industry Standard (Recommended)
Classification of Chinese Standard H13
Classification of International Standard 77.120.99
Word Count Estimation 10,175
Date of Issue 2015-04-30
Date of Implementation 2015-10-01
Drafting Organization Tongling Nonferrous Metals Group Holdings Limited, Guangzhou Nonferrous Metals Research Institute
Administrative Organization National Non-Ferrous Metals Standardization Technical Committee (SAC/TC 243)
Regulation (derived from) Ministry of Industry and Information Technology Announcement (2015 No. 28)
Proposing organization National Non-Ferrous Metals Standardization Technical Committee (SAC/TC 243)
Issuing agency(ies) Ministry of Industry and Information Technology of the People's Republic of China
Summary This Standard specifies the method for the determination of gold content of crude selenium. This Standard applies to the determination of selenium in crude gold content. Measuring range: 1.0 g /T ~ 150.0 g /T.

YS/T 1084.1-2015
(Crude selenium chemical analysis methods - Part 1. Determination of the amount of gold fire assay gravimetric method and atomic absorption spectrometry)
ICS 77.120.99
H13
People's Republic of China Nonferrous Metals Industry Standard
Methods for chemical analysis of crude selenium
Part 1. Determination of gold content
Fire assay gravimetric and Atomic Absorption Spectrometry
Part 1. Determinationofgoldcontent-
Issued on. 2015-04-30
2015-10-01 implementation
Ministry of Industry and Information Technology of the People's Republic of China released
Foreword
YS/T 1084 "crude selenium chemical analysis method" is divided into two parts.
--- Part 1. Determination of the amount of gold fire assay gravimetric method and atomic absorption spectrometry;
--- Part 2. Determination of silver content - Flame atomic absorption spectrometry.
This section YS/T 1084 Part 1.
This section drafted in accordance with GB/T 1.1-2009 given rules.
The non-ferrous metal part by the National Standardization Technical Committee (SAC/TC243) and focal points.
This section is responsible for drafting unit. Tongling Nonferrous Metals Group Holdings Co., Ltd., Guangzhou Nonferrous Metal Research Institute.
Participated in the drafting of this section. Beijing General Research Institute of Mining and Metallurgy, Yanggu Yoshimitsu Copper Co., Ltd., Nantong CIQ, Zhuzhou Smelter
Lian Group Co., Ltd. Guangdong pilot dilute material.
The main drafters of this section. Wu Yong, Lv Xixi, Liqin Mei, Dai Fengying, Xiaoling, and from Shao, Ye Xin, Douhuai Zhi, Xiao new, Liu Qiubo,
Million pairs, Bo Wen-chao, Wang Xin month, Li Hu, LI Xian and, Wang Chaoying.
Methods for chemical analysis of crude selenium
Part 1. Determination of gold content
Fire assay gravimetric and Atomic Absorption Spectrometry
1 Scope
YS/T 1084 This section provides the determination of selenium in crude gold content.
This section applies to the determination of selenium in crude gold content. Measuring range. 1.0g/t ~ 150.0g/t.
2 Method summary
Sample in advance except selenium treatment at 700 ℃, by ingredients, high temperature melting, a molten metallic lead capture in a sample of precious metal buckle lead,
And other substances in a sample of flux generated easily fusible slag. The lead button cupellation give gold and silver grains together, remove co-grain surface adhesive impurities, nitric acid
Parting, the determination of gold by gravimetric method.
3 Reagents
Unless otherwise indicated in the analysis using only recognized as analytical grade reagents and distilled or deionized water or equivalent purity.
3.1 anhydrous sodium carbonate powder, commercially pure.
3.2 lead oxide powder. w (Au) <0.01g/t, w (Ag) <0.2g/t.
3.3 silica powder, commercially pure.
3.4 borax, powdered, commercially pure.
3.5 sodium chloride, powder, commercially pure.
3.6 starch, powdered.
3.7 nitric acid (17), pure class distinctions.
4 instruments and equipment
4.1 Balance. ultra-microbalance, a sense of the amount of 0.001mg.
4.2 Assaying furnace. maximum heating temperature of 1350 ℃.
4.3 muffle furnace. temperature and temperature control device, the maximum temperature of 815 ℃ ± 10 ℃. The upper portion of the rear wall of the oven with a diameter of 25mm ~
30mm, 400mm high chimney, with a diameter of 20mm ventilation holes on the door. see picture 1.