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YS/T 252.6-2020Methods for chemical analysis of nickel matte - Part 6: Determination of lead, zinc and arsenic contents - Inductively coupled plasma atomic emission spectrometry (English PDF)

高镍锍化学分析方法第6部分：铅、锌和砷含量的测定电感耦合等离子体原子发射光谱法

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Issued by

Ministry of Industry and Information Technology of PRC

Level / Type

National · Recommended

Issue date

April 16, 2020

Implementation date

October 1, 2020

Scope

YS/T 252.6-2020 is the English-translated version of 高镍锍化学分析方法第6部分：铅、锌和砷含量的测定电感耦合等离子体原子发射光谱法.

YS/T 252.6-2020 — 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.

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Document preview — YS/T 252.6-2020

National Standard of the People's Republic of China

ICS: 77.120.40
Classification: H 13

Issued by: Ministry of Industry and Information Technology of PRC

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.

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 (rho = 1.19 g/mL).

3.2 Nitric acid (rho = 1.42 g/mL).

3.3 Perchloric acid (rho = 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.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 9 pages — is available in the English PDF.

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