YS/T 252.6-2020 English PDF (YST252.6-2020)

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YS/T 252.6-2020: Methods for chemical analysis of nickel matte - Part 6: Determination of lead, zinc and arsenic contents - Inductively coupled plasma atomic emission spectrometry
YS/T 252.6-2020
YS
NONFERROUS INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 77.120.40
H 13
Methods for chemical analysis of nickel matte - Part 6:
Determination of lead, zinc and arsenic contents -
Inductively coupled plasma atomic emission spectrometry
ISSUED ON: APRIL 16, 2020
IMPLEMENTED ON: OCTOBER 01, 2020
Issued by: Ministry of Industry and Information Technology of PRC
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Method summary ... 5
3 Reagents ... 5
4 Instruments ... 6
5 Samples ... 7
6 Test steps ... 7
7 Test data processing ... 8
8 Precision ... 8
9 Test report ... 9
Foreword
YS/T 252 "Methods for chemical analysis of nickel matte" is divided into 8 parts:
- Part 1: Determination of nickel content - Dimethylglyoxime gravimetric method
- Part 2: Determination of iron content - Sulfosalicylic acid photometric method
- Part 3: Determination of cobalt content - Flame atomic absorption spectrometric
method
- Part 4: Determination of cobalt content - Sodium thiosulphate titrimetric method
- Part 5: Determination of sulfur content - Combustion-neutralization titrimetric
method
- Part 6: Determination of lead, zinc and arsenic contents - Inductively coupled
plasma atomic emission spectrometry
- Part 7: Determination of silver content - Flame atomic absorption spectrometry
- Part 8: Determination of gold, platinum and palladium contents - Fire assay
collection-inductively coupled plasma atomic emission spectrometry
This Part is Part 6 of YS/T 252.
This Part was drafted in accordance with the rules given in GB/T 1.1-2009.
This Part was proposed by AND shall be under the jurisdiction of the National
Nonferrous Metals Standardization Technical Committee (SAC/TC 243).
Drafting organizations of this Part: Jinchuan Group Co., Ltd., Beijing Mineral
Inspection Technology Co., Ltd., GB (Beijing) Inspection and Certification Co., Ltd.,
Guangdong Industrial Analysis and Testing Center, Liaoning Entry-Exit Inspection and
Quarantine Bureau Inspection and Quarantine Technology Center, Guangxi Zhuang
Autonomous Region Metallurgical Products Quality Inspection Station, Lanzhou
Jinchuan New Material Technology Co., Ltd., Shandong Hengbang Smelting Co., Ltd.,
Changsha Mining and Metallurgy Research Institute Co., Ltd., Guizhou Institute of
Analysis and Testing, Guangxi CCIC Testing Technology Service Co., Ltd., Zhejiang
Huayou Cobalt Industry Co., Ltd., Zhejiang Yatong Welding Materials Co., Ltd.,
Emeishan Eban High Purity Materials Co., Ltd., Guangxi Zhuang Autonomous Region
Analysis and Testing Research Center.
The main drafters of this Part: Yu Shengjie, Ren Lihua, Liu Shihe, Xie Yang, Luo Haixia,
Fang Di, Wang Zhengqiang, Wang Changhua, Mo Shumin, Zhao Chunlei, Xie Hui,
Zhang Ting, Zhou Zhiping, Li Yan, Nie Xiaoming, Wei Li, Xu Yanyan, Zhu Guozhong ,
Ma Qun, Song Jianwei, Ni Yuyan, Yang Binghong, Cui Hao, Guan Hongsu, Jiang Jing,
Methods for chemical analysis of nickel matte - Part 6:
Determination of lead, zinc and arsenic contents -
Inductively coupled plasma atomic emission spectrometry
1 Scope
This Part specifies methods for the determination of lead, zinc, arsenic content in high
nickel matte.
This Part applies to the determination of lead, zinc, arsenic content in high nickel matte.
The measurement range is as shown in Table 1.
2 Method summary
The sample is decomposed with hydrochloric acid, nitric acid, perchloric acid. In dilute
hydrochloric acid medium, the emission intensity of each element is measured on an
inductively coupled plasma atomic emission spectrometer. The contents of lead, zinc,
arsenic are calculated according to the working curve method.
3 Reagents
Unless otherwise stated, only reagents confirmed to be of superior purity are used in
the analysis. All water used is water of grade-2 purity or above.
3.1 Hydrochloric acid (ρ = 1.19 g/mL).
3.2 Nitric acid (ρ = 1.42 g/mL).
3.3 Perchloric acid (ρ = 1.84 g/mL).
3.4 Hydrochloric acid (1 + 1).
3.5 Nitric acid (1 + 1).
5 Samples
5.1 The particle size of the sample shall not be greater than 154 μm.
5.2 The sample is pre-dried at 105 °C ± 5 °C for 2 hours, placed in a desiccator to cool
to room temperature for later use.
6 Test steps
6.1 Sample
Weigh 0.20 g of sample, accurate to 0.0001 g.
6.2 Parallel test
Conduct two tests in parallel,
6.3 Blank test
Do a blank test along with the sample.
6.4 Determination
6.4.1 Place the sample (6.1) in a 300 mL beaker. Add 15 mL of hydrochloric acid (3.1),
5 mL of nitric acid (3.2), 2 mL of perchloric acid (3.3). Heat at low temperature until
the sample is completely dissolved. Continue heating. When the white smoke is gone,
evaporate the test solution to dryness, then remove and cool it to room temperature.
Add 5 mL of hydrochloric acid (3.1). Rinse the watch plate and cup wall with a small
amount of water. Heat to dissolve the salt. Remove and cool. Transfer the test solution
into a 200 mL volumetric flask. Use water to dilute it to volume. Mix well.
6.4.2 On the inductively coupled plasma atomic emission spectrometer, at the selected
analysis spectrum line, measure the emission intensity of each element to be measured
in the test solution (6.4.1) and the accompanying sample blank solution (6.3),
simultaneously with the standard solution series. Calculate the blank-corrected mass
concentration of each measured element from the working curve.
6.5 Drawing of working curve
Dilute the lead, zinc, arsenic standard storage solutions (3.8 ~ 3.10) step by step
respectively. Prepare a series of mixed standard solutions of lead, zinc, arsenic
according to Table 3. On an inductively coupled plasma atomic emission spectrometer,
measure the emission intensity of lead, zinc, arsenic in a mixed series of standard
solutions, at the selected analysis spectral line. Draw the working curve, using the mass
concentration of the element being measured as the abscissa and the emission intensity
as the ordinate.