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GB/T 38389-2019

Chinese Standard: 'GB/T 38389-2019'
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GB/T 38389-2019English249 Add to Cart Days<=3 Methods for chemical analysis of indium-tin oxide target Valid GB/T 38389-2019
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Standard ID GB/T 38389-2019 (GB/T38389-2019)
Description (Translated English) Methods for chemical analysis of indium-tin oxide target
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard H13
Classification of International Standard 77.120.60
Word Count Estimation 14,148
Date of Issue 2019-12-31
Date of Implementation 2020-11-01
Drafting Organization Zhuzhou Smelting Group Co., Ltd.
Administrative Organization National Nonferrous Metals Standardization Technical Committee
Regulation (derived from) National Standards Bulletin No. 19 of 2019
Proposing organization China Nonferrous Metals Industry Association
Issuing agency(ies) State Administration of Market Supervision and Administration, National Standardization Administration

GB/T 38389-2019
Methods for chemical analysis of indium-tin oxide target
ICS 77.120.60
National Standards of People's Republic of China
Chemical analysis method of indium tin oxide target
2019-12-31 release
2020-11-01 implementation
State Administration of Market Supervision
Published by the National Standardization Administration
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard is proposed by China Nonferrous Metals Industry Association.
This standard is under the jurisdiction of the National Nonferrous Metals Standardization Technical Committee (SAC/TC243).
This standard was drafted. Zhuzhou Smelting Group Co., Ltd., Pilot Film Materials (Guangdong) Co., Ltd., Northwest Rare Metal Materials
Research Institute Ningxia Co., Ltd., North Mine Testing Technology Co., Ltd., National Standard (Beijing) Inspection and Certification Co., Ltd., Hunan Nonferrous Metal Research Institute, Guangzhou
Industrial Analysis and Testing Center of Eastern Province, Hunan Nonferrous Geological Survey and Research Institute, Changsha Research Institute of Mining and Metallurgy Co., Ltd., South of Jinjin, Shenzhen
Non-Ferrous Metals Co., Ltd. Fankou Lead-Zinc Ore, Guangxi Huaxi Group Co., Ltd., Youyan Yijin New Material Co., Ltd.
The main drafters of this standard. Wang Jun, Wang Zhiping, Zhu Zanfang, Jiang Qing, Zhang Dongguang, Shen Haizhi, Wang Qiao, Tian Caihong, Sun Hongtao, Fan Lixin,
Hou Dan, Feng Zhenhua, Bai Yingli, Mo Shumin, Liu Yan, Zhuang Aichun, Wang Changhua, Pang Wenlin, Xi Lijun, Suo Yunxiao, Wang Jiali, Zhang Yongjin, Zhu Hongbo,
Wei Xianghui, Luo Fuxing, Fu Zhaodi, Zhou Zhiping, Su Chunfeng, Deng Yuning, Zhang Yanhui, Wang Weihua, Deng Shupei, Xie Huiyuan, Xiong Fangxiang, Xie Hui,
Ruan Guise, Gan Xiongsheng, Lu Chao, Tang Ping, Li Jidong, Zhang Ting, Yang Yonggang.
Chemical analysis method of indium tin oxide target
1 Scope
This standard specifies methods for the determination of indium, tin, iron, aluminum, silicon, copper, lead, cadmium, nickel, chromium, and thallium in indium tin oxide targets.
This standard applies to the determination of indium, tin, iron, aluminum, silicon, copper, lead, cadmium, nickel, chromium and thallium in indium tin oxide targets. Analysis items, methods
Method and measurement range are shown in Table 1.
Table 1 Analysis items, methods, and measurement ranges
Analytical item method Determination range wX /%
In Na2EDTA titration method 70.00 ~ 85.00
Sn potassium iodate titration method 2.00 ~ 10.00
Fe, Al, Si, Cu, Pb, Cd, Ni, Cr, Tl Inductively coupled plasma atomic emission spectrometry 0.0005 ~ 0.010
2 Determination of indium content Na2EDTA titration method
2.1 Method summary
The sample was decomposed by hydrochloric acid, the pH of the solution was controlled to be 3.0 ~ 4.0, the tin was masked with sodium fluoride, xylenol orange was used as an indicator, and ethylenediamine was used.
The titration solution of disodium tetraacetate standard titration until the solution changes from red to bright yellow is the end point, according to the standard of disodium ethylenediamine tetraacetate consumed
Calculate the indium content of the solution volume.
2.2 Reagents
Unless otherwise stated, only reagents and distilled or deionized or fairly pure water identified as analytically pure were used in the analysis.
2.2.1 Sodium fluoride.
2.2.2 Hydrochloric acid (ρ = 1.19g/mL).
2.2.3 Hydrochloric acid (1 1).
2.2.4 Sodium hydroxide solution (200g/L).
2.2.5 Ammonia solution (1 1).
2.2.6 Hexamethyltetramine buffer solution (pH≈5.5). Weigh.200g of hexamethylenetetramine into a 1000mL beaker and add 600mL
Water, add 25mL hydrochloric acid (2.2.2), transfer to a 1000mL volumetric flask, dilute with water to the mark, and mix.
2.2.7 Indium standard solution. Weigh 1.1g (accurate to 0.0001g) metal indium (wIn≥99.99%) in a 250mL triangle beaker, slowly
Add 30mL hydrochloric acid (2.2.2), heat and dissolve at low temperature, transfer to a.200mL volumetric flask, cool, dilute with water to the mark, and mix.
2.2.8 Disodium ethylenediamine tetraacetate (Na2EDTA) standard titration solution [c (EDTA) ≈0.02mol/L]. among them.
a) Preparation. Weigh 7.5g disodium ethylenediaminetetraacetate, dissolve slightly with water, cool to room temperature, transfer to a 1000mL volumetric flask, and use water
Dilute to the mark and mix. After 3 days of calibration.
b) Calibration. Transfer 10.00mL indium standard solution (2.2.7) into a 250mL triangle beaker and adjust with sodium hydroxide solution (2.2.4)
When precipitation occurs, add hydrochloric acid (2.2.3) dropwise until the precipitation disappears, add 20 mL of hexamethylenetetramine buffer solution (2.2.6),
A white precipitate is generated, and then adjust the hydrochloric acid (2.2.3) until the precipitate just disappears, continue to add 0.5mL hydrochloric acid (2.2.3) to control the pH
Related standard:   GB/T 10574.10-2017  GB/T 10574.11-2017
Related PDF sample:   GB/T 33817-2017  GB/T 10574.11-2017
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