GB/T 20899.14-2017 English PDF

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GB/T 20899.14-2017: Methods for chemical analysis of gold ores -- Part 14: Determination of thallium content -- Inductively coupled plasma atomic emission spectrometry and inductively coupled plasma mass spectrometry
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 20899.14-2017	199	Add to Cart	3 days	Methods for chemical analysis of gold ores -- Part 14: Determination of thallium content -- Inductively coupled plasma atomic emission spectrometry and inductively coupled plasma mass spectrometry	Valid

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Basic data

Standard ID: GB/T 20899.14-2017 (GB/T20899.14-2017)
Description (Translated English): Methods for chemical analysis of gold ores -- Part 14: Determination of thallium content -- Inductively coupled plasma atomic emission spectrometry and inductively coupled plasma mass spectrometry
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: D46
Classification of International Standard: 77.150.01
Word Count Estimation: 10,196
Date of Issue: 2017-09-29
Date of Implementation: 2018-08-01
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

GB/T 20899.14-2017: Methods for chemical analysis of gold ores -- Part 14: Determination of thallium content -- Inductively coupled plasma atomic emission spectrometry and inductively coupled plasma mass 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 gold ores - Part 14. Determination of thallium content - Inductively coupled plasma atomic emission spectrometry and inductively coupled plasma mass spectrometry ICS 77.150.01 D46 National Standards of People's Republic of China Gold ores chemical analysis methods Part 14. Determination of thallium content Inductively coupled plasma atomic emission spectrometry and Inductively coupled plasma mass spectrometry Methods for chemical analysis of golds- Part 14.Determinationofthaliumcontent- 2017-09-29 Release.2018-08-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released

Foreword

GB/T 20899 "gold ore chemical analysis method" is divided into 14 parts. --- Part 1. Determination of the amount of gold and silver; --- Part 2. Determination of silver; --- Part 3. Determination of arsenic; --- Part 4. Determination of copper content; --- Part 5. Determination of lead content; --- Part 6. Determination of zinc content; --- Part 7. Determination of iron content; --- Part 8. Determination of sulfur; --- Part 9. Determination of carbon content; --- Part 10. Determination of the amount of antimony; --- Part 11. Determination of arsenic and bismuth; --- Part 12. Determination of arsenic, mercury, cadmium, lead and bismuth content; Atomic fluorescence spectrometry; --- Part 13. Determination of lead, zinc, bismuth, chromium, cadmium, arsenic and mercury content - Inductively coupled plasma atomic emission spectrometry; --- Part 14. Determination of thallium content Inductively coupled plasma atomic emission spectrometry and inductively coupled plasma mass spectrometry. This section GB/T 20899 Part 14. This section drafted in accordance with the provisions given GB/T 1.1-2009. This part of the National Gold Standardization Technical Committee (SAC/TC379) and focal point. This part of the drafting unit.Zijin Mining Group Co., Ltd., Changchun Institute of gold, Jiangxi Jinyuan Nonferrous Geological Testing Co., Ltd., Beijing Mining and Metallurgical Research Institute, China Nonferrous Guilin Institute of Mineral Geology Co., Ltd., Shandong Guoda Gold Co., Ltd., Daye Nonferrous Institute Co., Ltd., Henan Zhongyuan Gold Smelter Co., Ltd., Shandong Heng State Smelting Co., Ltd., Yunnan Gold Mining Set Mission Precious Metal Testing Co., Ltd., Fangchenggang Exit Inspection and Quarantine, Shandong Gold Smelting Co., Ltd. The main drafters of this section. Summer pearl, Luo Ronggen, Luo Wen, Yang Zhifeng, Chen Zhuhai, Xie Wenliang, Longxiu A, Wu Yinlai, Chen Yonghong, Su Guangdong, Guan Guojun, Gao Zhenguang, Yan Kai, Dai Xuding, Cao Jun, Liu Runting, Su Chunfeng, Chen Zhuansha, Tang Jasper, Qiu Li, Yin Changhui, Kong Lingqiang, Shao Guoqiang, He Mei, Liu Xiaoyan, Dang Hongqing, Zhang Junfeng, Wang Feihu, Lv Wenxian, Chen Xiaoke, Luo Minggui, He Zhaosen, Chen Guanghui, Zhou Fajun. Gold ores chemical analysis methods Part 14. Determination of thallium content Inductively coupled plasma atomic emission spectrometry and Inductively coupled plasma mass spectrometry Warning --- Thallium is a toxic substance, the use of this part of the staff should have formal laboratory work experience. This section does not point out all Possible security issue. It is the user's responsibility to take appropriate safety and health measures and to ensure compliance with the requirements of the relevant state laws and regulations.

1 Scope

This section GB/T 20899 specifies the determination of the amount of thallium in gold ore. This section applies to the determination of the amount of thallium in gold ore, the determination of the range of 1.20.0μg/g ~ 250.0μg/g; method 2.0.20μg/g ~ 50.00 μg/g. 2 Methods 1. Inductively coupled plasma atomic emission spectrometry 2.1 method principle Samples of hydrochloric acid, nitric acid, hydrofluoric acid, perchloric acid decomposition, mixed acid medium, in the presence of hydrogen peroxide and iron salts, with polyurethane foam rich Set, the separation of thallium and impurity elements, dissolved in boiling water bath with dilute nitric acid thallium, selected by inductively coupled plasma atomic emission spectrometer The spectral intensity of the thallium element in the test solution is measured at a wavelength of 190.801 nm and the amount of thallium is calculated according to a standard curve method. 2.2 Reagents and materials Unless otherwise specified, only reagents and materials identified as analytically pure, and deionized or distilled water or equivalent purity water are used in the assay. 2.2.1 Hydrochloric acid (p = 1.19 g/mL). 2.2.2 Nitric acid (p = 1.42 g/mL). 2.2.3 Hydrofluoric acid (p = 1.13 g/mL). 2.2.4 Perchloric acid (ρ = 1.68g/mL). 2.2.5 Hydrogen peroxide (30%). 2.2.6 hydrochloric acid (19) .1 volume hydrochloric acid (2.2.1) mixed with 9 volumes of water. 2.2.7 nitric acid (1 99) .1 volume of nitric acid (2.2.2) mixed with 99 volumes of water. 2.2.8 mixed acid (1 1) .3 volume hydrochloric acid (2.2.1), a volume of nitric acid (2.2.2) and 4 volumes of water, the current use of the current distribution. 2.2.9 ferric chloride solution (50g/L). Weigh 242.5g FeCl3 · 6H2O in 500mL beaker, dissolved in water, was added 30mL Mixed acid (2.2.8), into the 1000mL volumetric flask, diluted with water to the mark, mix well. 2.2.10 thallium standard stock solution Weigh 0.1117g pre-baked at 100 ℃ ~ 105 ℃ 1h and cooled to room temperature in the dryer trioxide Thallium (reference reagent), placed in 100mL beaker, add 10mL hydrochloric acid (2.2.1), to dissolve. Into a 100mL volumetric flask, add 10mL nitric acid (2.2.2), diluted with water to the mark, mix well. 1mL of this solution contains 1mg thallium. 2.2.11 thallium standard solution A (50.00μg/mL) Pipette 5.00mL thallium standard stock solution (2.2.10) in 100mL volumetric flask, add 10mL nitric acid (2.2.2), diluted with water to the mark, mix well. 1 mL of this solution contains 50 μg thallium. 2.2.12 thallium standard solution B (2.50μg/mL) Pipette 5.00mL thallium standard solution A (2.2.11) in a 100mL volumetric flask, add ......

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