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YS/T 981.5-2014: Methods for chemical analysis of high pure indium-Determination of thallium content. Rhodamine B spectrophotometric method
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| YS/T 981.5-2014 | English | 159 |
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Methods for chemical analysis of high pure indium-Determination of thallium content. Rhodamine B spectrophotometric method
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YS/T 981.5-2014
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Basic data | Standard ID | YS/T 981.5-2014 (YS/T981.5-2014) | | Description (Translated English) | Methods for chemical analysis of high pure indium-Determination of thallium content. Rhodamine B spectrophotometric method | | Sector / Industry | Nonferrous Metallurgy Industry Standard (Recommended) | | Classification of Chinese Standard | H17 | | Classification of International Standard | 77.040.30 | | Word Count Estimation | 6,690 | | 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 the determination of high-purity indium thallium content. This section applies to the determination of 99.9999% purity Indium content of thallium. Measured in the range of 5 �� 10-5% ~ 3 �� 10-4%. | YS/T 981.5-2014: Methods for chemical analysis of high pure indium-Determination of thallium content. Rhodamine B spectrophotometric method
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Methods for chemical analysis of high pure indium-Determination of thallium content. Rhodamine B spectrophotometric method
ICS 77.040.30
H17
People's Republic of China Nonferrous Metals Industry Standard
Methods for chemical analysis of high purity indium
Determination of thallium content
Rhodamine B photometric method
Issued on. 2014-10-14
2015-04-01 implementation
Ministry of Industry and Information Technology of the People's Republic of China released
Foreword
YS/T 981 "Methods for chemical analysis of high purity indium" is divided into five sections.
--- Part 1. magnesium, aluminum, silicon, sulfur, iron, nickel, copper, zinc, arsenic, silver, cadmium, tin, thallium, lead quality measurement resolution glow discharge mass
Spectroscopy;
--- Part 2. Inductively magnesium, aluminum, iron, nickel, copper, zinc, silver, cadmium, tin, lead coupled plasma mass spectrometry;
--- Part 3. Determination of the amount of silicon silicon molybdenum blue spectrophotometric method;
--- Part 4. Determination of tin content Phenylfluorone - bromo cetyl trimethylamine absorptiometry;
--- Part 5. Determination of thallium content Rhodamine B photometric method.
This section YS/T 981 Part 5.
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) centralized.
This section is responsible for drafting units. non-ferrous metals and electronic materials analysis and testing center.
This section participated in the drafting unit. China Nonferrous Metals Industry Institute of Standards Metrology and Quality, Emei Semiconductor Material Research Institute, Lanzhou Jinchuan
New Material Technology Co., Ltd. Guang Xi Debang.
The main drafters of this section. Liu Li Chang love, heart Yang Su, Fan Xuehua, Qiu Ping, Tao.
Methods for chemical analysis of high purity indium
Determination of thallium content
Rhodamine B photometric method
1 Scope
This section YS/T 981 specifies the method for determination of high-purity indium thallium content.
This section applies to the determination of 99.9999% purity Indium thallium content. Determination range 5 × 10-5% ~ 3 × 10-4%.
2 Method summary
After the sample was decomposed by the hydrobromide, in 1.7mol/L hydrogen bromide and extracted with isopropyl ether thallium with rhodamine B color. At a wavelength of 550nm
Measured at the absorbance. Indium less than 5mg, there is less than 3μg gallium, antimony do not interfere with the determination.
3 Reagents
3.1 Part of the water is deionized water, resistivity greater than 18MΩ · cm.
3.2 hydrobromic acid (8.5mol/L). used after distillation.
3.3 isopropyl ether, chemically pure.
The extract was 3.4. hydrobromic acid, 1.7mol/L, the preparation of hydrobromic acid (3.2).
3.5 Rhodamine B solution (0.2g/L). Weigh 0.100g Rhodamine B dissolved 500mL1mol/L hydrochloric acid, and mix.
3.6 sulfosalicylic acid solution. 100g/L.
3.7 Thallium standard solution (A). Weigh 0.1300g thallium nitrate (spectroscopically pure) placed in 50mL beaker, add a small amount of water to dissolve, moved
1000mL volumetric flask, diluted with water to the mark. This solution containing thallium 1mg/mL.
3.8 Thallium standard solution (B). Take 2.00mL Thallium standard solution (3.7) and transferred to 100mL volumetric flask, dilute with water to the mark.
This solution containing thallium 2μg/mL.
4 Instrument
Spectrophotometer.
5 Determination
5.1 Sample
Weigh 1.00g specimen to the nearest 0.0001mg.
5.2 Determination of the number of
Independently measured three times and averaged.
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