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YS/T 746.2-2010: Methods for chemical analysis of tin-based lead-free solders. Part 2: Determination of silver content. Flame atomic absorption spectrometric method and potassium thiosulfate titrimetric method
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Methods for chemical analysis of tin-based lead-free solders. Part 2: Determination of silver content. Flame atomic absorption spectrometric method and potassium thiosulfate titrimetric method
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YS/T 746.2-2010
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Basic data | Standard ID | YS/T 746.2-2010 (YS/T746.2-2010) | | Description (Translated English) | Methods for chemical analysis of tin-based lead-free solders. Part 2: Determination of silver content. Flame atomic absorption spectrometric method and potassium thiosulfate titrimetric method | | Sector / Industry | Nonferrous Metallurgy Industry Standard (Recommended) | | Classification of Chinese Standard | H13 | | Classification of International Standard | 77.040.30 | | Word Count Estimation | 9,961 | | Date of Issue | 2010-11-22 | | Date of Implementation | 2011-03-01 | | Regulation (derived from) | MIIT (2010) No. 126 | | Issuing agency(ies) | Ministry of Industry and Information Technology | | Summary | This standard specifies the base lead-free solder silver solder method for determination. This standard applies to lead-free tin-based solder in the silver content. Measuring range: 0. 0020% to 0. 500% | YS/T 746.2-2010: Methods for chemical analysis of tin-based lead-free solders. Part 2: Determination of silver content. Flame atomic absorption spectrometric method and potassium thiosulfate titrimetric method
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Methods for chemical analysis of tin-based lead-free solders.Part 2. Determination of silver content.Flame atomic absorption spectrometric method and potassium thiosulfate titrimetric method
ICS 77.040.30
H13
People's Republic of China Nonferrous Metals Industry Standard
No Tin Lead-based solder chemical analysis
Part 2. Determination of silver content
Flame atomic absorption spectrometry and
Potentiometric titration with potassium thiocyanate
Part 2. Determinationofsilvercontent-
Issued on. 2010-11-22 2011-03-01 implementation
Ministry of Industry and Information Technology of the People's Republic of China released
Foreword
YS/T 746 "non-Pb-based solder chemical analysis method" is divided into 17 parts.
--- Part 1 Determination of tin content Coke sexual gallic acid Covering - lead nitrate titration method
--- Part 2 of silver content - Flame atomic absorption spectrometry and potentiometric titration with potassium thiocyanate
--- Part 3 of copper content - Flame atomic absorption spectrometry and titration with sodium thiosulfate
--- Part 4 of lead content - Flame Atomic Absorption Spectrometry
--- Part 5 of bismuth content - Flame atomic absorption spectrometry and titration Na2EDTA
--- Part 6 of antimony content - Flame Atomic Absorption Spectrometry
--- Part 7 Determination of iron content by flame atomic absorption spectrometry
--- Part 8 of arsenic content of arsenic, antimony molybdenum blue spectrophotometric method
--- Part 9 Determination of zinc content by flame atomic absorption spectrometry and titration Na2EDTA
Part 10 Determination of aluminum content --- first electrothermal atomic absorption spectrometry
--- Part 11 of cadmium content - Flame Atomic Absorption Spectrometry
--- Part 12 Determination of indium titration Na2EDTA
--- Part 13 Determination of nickel content by flame atomic absorption spectrometry
--- Part 14 Determination of the phosphorus content of the first crystal violet - heteropoly acid phosphovanadomolybdate spectrophotometry
--- Part 15 Determination of germanium content salicylfluorone spectrophotometry
--- Part 16 Determination of rare earth Arsenazo Ⅲ spectrophotometry
--- Part 17 silver, copper, lead, bismuth, antimony, iron, arsenic, zinc, aluminum, cadmium, nickel, indium content was measured by inductively coupled plasma optical emission
Spectroscopy
This is Part 2.
This section is in accordance with GB/T 1.1-2009 given rules drafted.
The non-ferrous metal part by the National Standardization Technical Committee (SAC/TC243) centralized.
This section is drafted. Yunnan Tin Group Co., Ltd.
Participated in the drafting of this section. Yunnan Tin Company Limited.
The main drafters of this section. Huang Yu, built in the Tang, Zhu Rui, Tan Yong, Huang Jinsong, who Ting, Zhao Rulin, Su Xiaomei, Wang Mei.
No Tin Lead-based solder chemical analysis
Part 2. Determination of silver content
Flame atomic absorption spectrometry and
Potentiometric titration with potassium thiocyanate
Method 1 flame atomic absorption spectrometry
1 Scope
YS/T 746 This section specifies the determination method based solder lead-free solder silver content.
This section applies to the determination of tin-based solder without silver content. Measurement range. 0.0020% to 0.500%.
2 Method summary
Samples with hydrochloric acid - nitric acid mixture is dissolved in hydrochloric acid - volatile hydrobromide row tin, antimony, 10% hydrochloric acid - mixed nitric acid medium, in
Atomic absorption spectrometer at a wavelength of 328.1nm, with flame atomization, air - acetylene flame measured absorbance.
3 Reagents
Unless otherwise indicated in the analysis using only recognized as analytical grade reagents and distilled or deionized water or equivalent purity.
Nitrate 3.1 (ρ1.42g/mL).
3.2 hydrochloride (ρ1.19g/mL).
3.3 hydrobromide (ρ1.49g/mL).
3.4 Hydrogen peroxide (30%).
3.5 nitric acid (11).
3.6 hydrochloric acid - hydrogen bromide mixed acid. hydrochloric acid (3.2) and hydrobromic acid (3.3) mixed in equal volumes.
3.7 mixed acid. 300mL of hydrochloric acid (3.2) and 100mL nitric acid (3.1) and mixed.
3.8 Silver standard stock solution. Weigh 0.1000g of silver (≥99.99%), placed in a beaker of 200mL, 20mL of nitric acid was added (3.5), micro
Heat to dissolve completely driven out of oxides of nitrogen boil, remove the cooled to room temperature and transferred to 500mL brown volumetric flask, add 20mL of nitric acid
(3.5), dilute to the mark and mix. This solution 1mL containing 200μg silver.
3.9 Silver standard solution. Pipette 25.00mL standard silver stock solution (3.8) in 250mL volumetric flask, was added 20mL of nitric acid (3.5),
Dilute with water to volume, and mix. This solution 1mL containing 20μg silver.
4 Instrument
Atomic absorption spectrometer, with a silver hollow-cathode lamp.
Under optimum working conditions for those who can reach the following indicators can be used.
--- Characteristic concentration. the solution was measured with the same base solution, features silver concentration should be less than 0.037μg/mL;
--- Precision. measure 10 times the absorbance of the highest concentration of the standard solution, the standard deviation should not exceed 1% of the average absorbance; with
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