GB/T 23834.7-2026Chemical analysis methods for stannous sulfate - Part 7: Determination of copper, lead, arsenic, iron, antimony, potassium, sodium, calcium and magnesium contents - Inductively coupled plasma optical emission spectrometry (English PDF)

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part

1.Structure and Drafting Rules of Standardization Documents". Drafting. This document is Part 7 of GB/T 23834, "Chemical Analysis Methods for Stannous Sulfate". GB/T 23834 has already published the following parts.

1.Determination of Stannous Sulfate Content by Potassium Dichromate Titration;

2.Determination of hydrochloric acid insoluble matter by gravimetric method;

3.Determination of total alkali metal and alkaline earth metal sulfates by gravimetric method;

4.Determination of Lead and Copper Content by Flame Atomic Absorption Spectrometry;

5.Determination of Arsenic Content. Silver Diethyldithiocarbamate Spectrophotometric Method;

6.Determination of Iron Content using the o-phenanthroline spectrophotometric method;

7.Determination of Copper, Lead, Arsenic, Iron, Antimony, Potassium, Sodium, Calcium, and Magnesium Contents by Inductively Coupled Plasma Atomic Emission Spectrometry (ICP- OES). Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents. This document was proposed by the China Petroleum and Chemical Industry Federation. This document is under the jurisdiction of the National Technical Committee on Chemical Standardization (SAC/TC63). This document was drafted by: Fine Chemicals Group Co., Ltd., Yunnan Tin Industry Tin Chemical Materials Co., Ltd., and Lanbao (Xiamen) Water Treatment Plant. Li Technology Co., Ltd., Beijing Institute of Technology, Yiyang Shengli Materials Technology Co., Ltd., Zhejiang Luye Water Purifier Technology Co., Ltd. CNOOC Tianjin Chemical Research and Design Institute Co., Ltd. The main drafters of this standard are. Wang Zhouhui, Han Hongli, Lian Liwei, Chen Bangkuan, Tang Lei, Tang Libo, He Yingying, Chen Qian, Zhang Niu, and Huang Yanyu. Xue Lifan, Li Xia, Guo Fengxin.

Industrial stannous sulfate is mainly used as an electroplating additive, an aluminum alloy surface oxidation colorant, a lead-acid battery additive, a cement additive, and in printing and dyeing. Industrial mordants, other industrial reducing agents, etc. GB/T 23834, "Chemical Analysis Methods for Stannous Sulfate," specifies the methods for analyzing different compounds in stannous sulfate. The series of test method standards for the determination of chemical components are proposed to consist of 7 parts.

1.Determination of Stannous Sulfate Content by Potassium Dichromate Titration. The aim is to achieve accurate determination of stannous sulfate content using potassium dichromate titration. Determine the stannous sulfate content.

2.Determination of Hydrochloric Acid Insoluble Matter by Gravimetric Method. The aim is to achieve accurate determination of the content of hydrochloric acid insoluble matter by gravimetric method.

3.Determination of Total Alkali Metal and Alkali Earth Metal Sulfates by Gravimetric Method. The aim is to achieve accurate determination by gravimetric method. Total amount of alkali metal and alkaline earth metal sulfates.

4.Determination of Lead and Copper Content by Flame Atomic Absorption Spectrometry. The aim is to achieve accurate determination of lead and copper content using flame atomic absorption spectrometry. Accurately determine the lead and copper content.

5 General Provisions

Unless otherwise specified, all impurity standard solutions, preparations, and products used shall comply with the provisions of HG/T 3696.2 and HG/T 3696.3. Preparation.

6 Reagents or materials

6.1 Hydrochloric acid. Superior grade or higher.

6.2 Nitric acid solution. 1 1. Prepared using reagents of superior purity or higher.

6.3 Mixed standard solution of copper, lead, arsenic, iron, antimony, potassium, sodium, calcium, and magnesium I. Copper (Cu), Lead (Pb), Arsenic (As), Iron (Fe), Antimony (Sb) The mass concentrations of potassium (K), sodium (Na), calcium (Ca), and magnesium (Mg) were

0.1 mg/mL. Transfer

10.00 mL of each of the following standard stock solutions (concentrated by mass) prepared according to HG/T 3696.2.copper, lead, arsenic, iron, antimony, potassium, sodium, calcium, and magnesium. The concentrations were 1 mg/mL, and the solution was placed in a 100 mL volumetric flask. 4 mL of nitric acid solution was added, and the solution was diluted to the mark with water and shaken well. Alternatively, the concentrations could be... It is prepared using certified reference materials.

6.4 Mixed Standard Solution II of Copper, Lead, Arsenic, Iron, Antimony, Potassium, Sodium, Calcium, and Magnesium. Copper (Cu), Lead (Pb), Arsenic (As), Iron (Fe), Antimony (Sb) The mass concentrations of potassium (K), sodium (Na), calcium (Ca), and magnesium (Mg) were

0.01 mg/mL. Transfer

10.00 mL of a mixed standard solution I containing copper, lead, arsenic, iron, antimony, potassium, sodium, calcium, and magnesium to a 100 mL volumetric flask, and add 4 mL of nitrate. The acid solution was diluted with water to the mark and then shaken well.

6.5 Water. Water that meets the Class II standard as specified in GB/T 6682.

6.6 Argon. Purity (volume fraction) not less than 99.996%.

7 Instruments and Equipment

7.1 Inductively Coupled Plasma Emission Spectrometer (ICP-OES). The instrument shall comply with the provisions of JJG768.

7.2 Electronic balance. sensitivity 0.0001g.

8 Test Procedure

8.1 Instrument Operating Conditions Optimize the instrument's operating conditions according to its requirements. Recommended instrument operating conditions are shown in Table B.1 of Appendix B.