GB/T 38389-2019 English PDF

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GB/T 38389-2019: Methods for chemical analysis of indium-tin oxide target
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 38389-2019	279	Add to Cart	3 days	Methods for chemical analysis of indium-tin oxide target	Valid

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Basic data

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: 14,198
Date of Issue: 2019-12-31
Date of Implementation: 2020-11-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 38389-2019: Methods for chemical analysis of indium-tin oxide target

---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 indium-tin oxide target ICS 77.120.60 H13 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

Foreword

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 ......

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