YS/T 1157.3-2016 English PDF

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YS/T 1157.3-2016: Methods for chemical analysis of crude cobalt hydroxide—Part 3: Determination of calcium and magnesium contents—Flame atomic absorption spectrometry and inductively coupled plasma atomic emission spectrometry
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
YS/T 1157.3-2016	189	Add to Cart	3 days	Methods for chemical analysis of crude cobalt hydroxide—Part 3: Determination of calcium and magnesium contents—Flame atomic absorption spectrometry and inductively coupled plasma atomic emission spectrometry	Valid

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Basic data

Standard ID: YS/T 1157.3-2016 (YS/T1157.3-2016)
Description (Translated English): Methods for chemical analysis of crude cobalt hydroxide��Part 3: Determination of calcium and magnesium contents��Flame atomic absorption spectrometry and inductively coupled plasma atomic emission spectrometry
Sector / Industry: Nonferrous Metallurgy Industry Standard (Recommended)
Classification of Chinese Standard: H13
Classification of International Standard: 77.150.70
Word Count Estimation: 8,811
Date of Issue: 2016-07-11
Date of Implementation: 2017-01-01
Regulation (derived from): Notice of the Ministry of Industry and Information Technology (2016 No. 37)
Issuing agency(ies): Ministry of Industry and Information Technology
Summary: This standard specifies the method for determining the amount of calcium and magnesium in crude cobalt hydroxide.

YS/T 1157.3-2016: Methods for chemical analysis of crude cobalt hydroxide—Part 3: Determination of calcium and magnesium contents—Flame atomic absorption spectrometry and inductively coupled plasma atomic emission 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 crude cobalt hydroxide-Part 3. Determination of calcium and magnesium contents-Flame atomic absorption spectrometry and inductively coupled plasma atomic emission spectrometry ICS 77.150.70 H13 People's Republic of China non-ferrous metal industry standards Crude cobalt hydroxide chemical analysis method Part 3. Determination of calcium and magnesium content Flame atomic absorption spectrometry and Inductively coupled plasma atomic emission spectrometry Methods for chemical analysis of crucbalthydroxide Part 3.Determinationofcalciumandmagnesiumcontents 2016-07-11.2017-01-01 implementation Ministry of Industry and Information Technology of the People's Republic of China

Foreword

YS/T 1157 "crude cobalt hydroxide chemical analysis method" is divided into the following four parts. --- Part 1. Determination of cobalt content potentiometric titration; --- Part 2. Determination of nickel, copper, manganese, iron, lead, zinc, arsenic and cadmium; Inductively coupled plasma atomic emission spectrometry; --- Part 3. Determination of calcium and magnesium content Flame atomic absorption spectrometry and inductively coupled plasma atomic emission spectrometry; --- Part 4. Determination of manganese content Potentiometric titration. This part of the YS/T 1157 Part 3. This section drafted in accordance with GB/T 1.1-2009 given rules. This part of the National Non-ferrous Metals Standardization Technical Committee (SAC/TC243) and focal point. The main drafting unit of this section. Jinchuan Group Co., Ltd., Zhejiang Huayou Cobalt Co., Ltd.. This part of the method to participate in the drafting unit 1. Beijing Nonferrous Metal Research Institute, Hunan Nonferrous Metal Research Institute, Limited company. The main drafters of this section Method 1 Chen Xiongfei, Zhang Xiao, Zhang Zhixin, Ren Lihua, Yu Shengjie, Pan Meirong, Zou Zhi, Pang Wenlin, Xie Bohua, Shen Jiayue, Wu Chi Chun, Luo Yueying, Liang Yulan. This part of Method 2 participated in the drafting unit. Shanghai Nonferrous Metals Industry Technology Monitoring Center Co., Ltd., Guangzhou Nonferrous Metal Research Institute, Green America Co., Ltd., Suzhou Nonferrous Metal Research Institute Co., Ltd., Yingde Jia Na Metal Technology Co., The main drafters of this section Method 2. Yu Shengjie, Ren Lihua, Li Xikai, Lu Qingcheng, Wu Yahui, Zhang Xiao, Hou Chuan, Xiong Xiaoyan, Chuang Ai Chun, Wang Jin, Zhou Liang, Fan Juanhui, Fan Cui, Julie, Zhang Huilin, Wu Chi Chun, Luo Yue month. Crude cobalt hydroxide chemical analysis method Part 3. Determination of calcium and magnesium content Flame atomic absorption spectrometry and Inductively coupled plasma atomic emission spectrometry

1 Scope

YS/T 1157 provisions of this part of the crude cobalt hydroxide in the determination of calcium and magnesium content. This section applies to the determination of the amount of crude cobalt hydroxide and magnesium in the amount of magnesium. Method 1 The measurement range is 0.10% ~ 3.00% of calcium, Magnesium 0.10% ~ 2.50%; Method 2 determination range of calcium ≥ 3.00% ~ 7.00%, magnesium ≥ 2.50% ~ 10.00%. 2 Method 1 Flame atomic absorption spectrometry 2.1 Method summary Sample with hydrochloric acid, nitric acid, hydrofluoric acid, perchloric acid decomposition. In dilute hydrochloric acid medium, the use of air - acetylene flame, atomic absorption spectrometer At wavelengths of 422.7 nm and 285.2 nm, the absorbances of calcium and magnesium were measured respectively, and the contents of calcium and magnesium were calculated according to the working curve method. 2.2 Reagents Unless otherwise stated, only reagents identified as analytical grade were used in the analysis. The water used was either laboratory secondary water or water of comparable purity. 2.2.1 Nitric acid (p = 1.42 g/mL). 2.2.2 Hydrochloric acid (p = 1.19 g/mL). 2.2.3 Hydrofluoric acid (p = 1.15 g/mL). 2.2.4 Perchloric acid (ρ = 1.84 g/mL). 2.2.5 Hydrochloric acid (1 1). 2.2.6 lanthanum solution (40 g/L). Weigh 24.4g lanthanum oxide (La2O3) in.200mL beaker, add 50mL water, 20mL hydrochloric acid (2.2.2), heat until completely dissolved, remove and cool to room temperature. Move into 500mL volumetric flask, diluted with water to the mark, mix well. 2.2.7 Calcium standard storage solution Weigh 2.500g of calcium carbonate (wCaCO3 ≥ 99.95%, pre-baked at 105 ℃ for 1h, and placed in a desiccator Cooled to room temperature) in a 250mL beaker, add 30mL water, 20mL hydrochloric acid (2.2.5), heated to completely dissolve, boil to remove the oxidation Carbon, remove, cool to room temperature. Into a 1000mL volumetric flask, diluted with water to the mark, mix well. 1 mL of this solution contains 1 mg of calcium. 2.2.8 Magnesium standard storage solution Weigh 0.1658g magnesia (wMgO ≥ 99.95%, pre-fired at 800 ℃ to constant weight, placed in a dry Cooled to room temperature) in a 250mL beaker, add a small amount of water wetting, add 10mL hydrochloric acid (2.2.5) heated to dissolve completely, cooled and moved into 1000mL volumetric flask, diluted with water to the mark, mix well. This solution 1 mL contains 0.1 mg magnesium. 2.2.9 calcium standard solution Pipette 20.00mL calcium standard stock solution (2.2.7) in.200mL volumetric flask, add 10mL hydrochloric acid (2.2.5), diluted with water to the mark, mix well. 1 mL of this solution contains 100 μg of calcium. 2.2.10 Magnesium standard solution Pipette 20.00mL magnesium standard stock solution (2.2.8) in.200mL volumetric flask, add 10mL hydrochloric acid (2.2.5), diluted with water to the mark, mix well. 1 mL of this solution contains 10 μg of magnesium. 2.3 Instruments Atomic Absorption Spectrometer equipped with Calcium Hollow Cathode Lamp, Magnesium Hollow Cathode Lamp; Air-Acetylene Premix Burner. ......

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