GB/T 10574.7-2017 English PDF

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GB/T 10574.7-2017: Methods for chemical analysis of tin-lead solders -- Part 7: Determination of silver content -- Flame atomic absorption spectrometry and potassium thiocyanate potentiometric titration
Status: Valid

GB/T 10574.7: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 10574.7-2017	199	Add to Cart	3 days	Methods for chemical analysis of tin-lead solders -- Part 7: Determination of silver content -- Flame atomic absorption spectrometry and potassium thiocyanate potentiometric titration	Valid
GB/T 10574.7-2003	359	Add to Cart	3 days	Methods for chemical analysis of tin-lead solders -- Determination of silver content	Obsolete
GB/T 10574.7-1989	199	Add to Cart	2 days	Tin-lead solders--Determination of copper content--2, 9-dimethyl-1, 10-phenanthroline spetrophotometric method	Obsolete

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Basic data

Standard ID: GB/T 10574.7-2017 (GB/T10574.7-2017)
Description (Translated English): Methods for chemical analysis of tin-lead solders -- Part 7: Determination of silver content -- Flame atomic absorption spectrometry and potassium thiocyanate potentiometric titration
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H13
Classification of International Standard: 25.160.20
Word Count Estimation: 10,119
Date of Issue: 2017-10-14
Date of Implementation: 2018-05-01
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 10574.7-2017: Methods for chemical analysis of tin-lead solders -- Part 7: Determination of silver content -- Flame atomic absorption spectrometry and potassium thiocyanate potentiometric titration

---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 tin-lead solders-Part 7. Determination of silver content-Flame atomic absorption spectrometry and potassium thiocyanate potentiometric titra ICS 25.160.20 H13 National Standards of People's Republic of China Replacing GB/T 10574.7-2003 Tin - Lead solder chemical analysis methods Part 7. Determination of silver content Flame atomic absorption spectrometry and potassium thiocyanate Potentiometric titration Methods for chemical analysis of tin-leadsolders- Part 7.Determinationofsilvercontent- 2017-10-14 published.2018-05-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released

Foreword

GB/T 10574 "tin-lead solder chemical analysis method" is divided into 14 parts. --- Part 1. Determination of tin content potassium iodate titration; --- Part 2. Determination of the amount of antimony Malachite green spectrophotometry and potassium bromate titration; --- Part 3. Determination of bismuth content by flame atomic absorption spectrometry; --- Part 4. Determination of iron content 1,10-phenanthroline spectrophotometry; --- Part 5. Determination of arsenic; Arsenic antimony molybdenum blue spectrophotometry; --- Part 6. Determination of copper content by flame atomic absorption spectrometry; --- Part 7. Determination of silver content flame atomic absorption spectrometry and potassium thiocyanate potentiometric titration; --- Part 8. Determination of zinc content by flame atomic absorption spectrometry; --- Part 9. Determination of aluminum content by electrothermal atomic absorption spectrometry; --- Part 10. Determination of cadmium content Flame Atomic Absorption Spectrometry and Na2 EDTA titration; --- Part 11. Determination of phosphorus content crystal violet - vanadium molybdovanadophosphoric acid spectrophotometry; --- Part 12. Determination of sulfur content; high frequency combustion infrared absorption spectrometry; --- Part 13. Determination of antimony, bismuth, iron, arsenic, copper, silver, zinc, aluminum, cadmium, phosphorus and gold content Inductively coupled plasma atomic emission Spectrum method --- Part 14. Determination of tin, lead, antimony, bismuth, silver, copper, zinc, cadmium and arsenic quantities Photoemission spectrometry. This section GB/T 10574 Part 7. This section drafted in accordance with GB/T 1.1-2009 given rules. This Part replaces GB/T 10574.7-2003 "tin-lead solder chemical analysis method Part 7. Determination of silver," and GB/T 10574.7-2003 compared to the main technical changes are as follows. --- Increasing the normative references; --- Method 1 in Chapter 1 of the measurement range from "0.0010% to 0.500%" to "0.0020% to 0.500%"; --- 3.5.4 Solubility method from the "hydrobromide decomposition, with hydrochloric acid - hydrobromic acid separation of the matrix elemental tin and hydrochloric acid - hydrogen peroxide solution" system A combination of "hydrobromic acid, hydrochloric acid and hydrogen peroxide dissolved sample"; --- 3.7 Precision from the "allowable difference" to "repeatability and reproducibility." --- Chapter 4 potassium thiocyanate potentiometric titration instead of thiocyanate titration. This part is proposed by China Nonferrous Metal Industry Association. This part of the National Non-ferrous Metal Standardization Technical Committee (SAC/TC243) centralized. This section is responsible for the drafting unit. Yunnan Tin Industry Co., Ltd.. This part of the drafting unit. Yunnan Tin Group Co., Ltd., Beijing Mining and Metallurgical Research Institute, Zijin Mining Group Co., Ltd. State-owned Guilin Institute of Mineral Geology Co., Ltd., Kunming Metallurgical Research Institute, Liaoning Exit Inspection and Quarantine. The main drafters of this section. Zhao Ru Lin, Feng Zhenhua, Bo Yang, Huang Jinsong, Wang Haoying, Shao Hong, Luo Chengwei, Qiu Qingliang, Qiao Xiaofang, Liu Ying Wave, Liu Benfa, Zhang Hongling, Chen Diangeng, Li Yan, Xia Peizhu, Liu Qiubo, Dong Xiuwen, Han Jing. This part replaces the standards previously issued as. --- GB/T 10574.8-1989; --- GB/T 10574.9-1989; --- GB/T 10574.7-2003. Tin - Lead solder chemical analysis methods Part 7. Determination of silver content Flame atomic absorption spectrometry and potassium thiocyanate Potentiometric titration

1 Scope

GB/T 10574 provisions of this part of the tin-lead solder in the determination of the amount of silver. This section applies to the determination of tin-lead solder in the amount of silver. Measurement range of Method 1. 0.0020% to 0.500%; Method 2. Measurement range Wai .0.500% ~ 5.00%. This section provides the method for arbitration analysis.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 8012 cast tin-lead solder 3 Method 1 Flame atomic absorption spectrometry 3.1 Method summary The sample was dissolved with hydrobromic acid, hydrochloric acid and hydrogen peroxide, tin was separated by volatilization with hydrochloric acid-hydrobromic acid, and air-acetylene Flame, in the atomic absorption spectrometer wavelength of 328.1nm at the determination of silver absorbance. 3.2 Reagents Unless otherwise specified, only reagents identified as analytically pure and distilled or deionized water or rather pure water are used in the assay. 3.2.1 Hydrobromic acid (p = 1.48 g/mL). 3.2.2 Hydrochloric acid (p = 1.19 g/mL). 3.2.3 Nitric acid (p = 1.42 g/mL). 3.2.4 Hydrogen peroxide (30%, commercially available). 3.2.5 Hydrochloric acid (1 4). 3.2.6 Nitric acid (13). 3.2.7 Nitric acid (1 19). 3.2.8 Hydrogen peroxide (1 2). 3.2.9 silver standard storage solution Weigh 1.0000g silver metal (wAg ≥ 99.99%) placed in 250mL beaker, add 50mL nitric acid (3.2.6). Cover the watch glass and heat to low temperature to dissolve completely. Boil the nitrogen oxide. Remove and cool to room temperature and wash the watch glass with water And cup wall, into a 1000mL volumetric flask, diluted with nitric acid (3.2.7) to the mark, mix well, protected from light. This solution contains 1mL 1mg silver. 3.2.10 silver standard solution Pipette 10.00mL silver standard stock solution (3.2.9) in 1000mL volumetric flask, diluted with hydrochloric acid (3.2.5) ......

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