YS/T 746.15-2010Methods for chemical analysis of lead-free tin-based solders. Part 15: Determination of Germanium content. Salicylrone-sim polyethylene glycol phenyl ether spectrophotometry (English PDF)

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 15.

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, your research Platinum Limited.

1 Scope

YS/T 746 This section specifies the determination method based solder lead-free solder in the germanium content.

This section applies to the determination of tin-based solder without germanium content. Measurement range. 0.0010% to 0.050%.

2 Method summary

Sample with nitric acid, sulfuric acid, phosphoric acid dissolved in the presence of hydrochloric acid distillation main base, in the presence of OP, Ge4 and salicylfluorone Ketone form a red complex, in the spectrophotometer at a wavelength of 505nm, 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.

3.1 hydrochloride (rho1.19g/mL).

3.2 sulfate (rho1.84g/mL).

3.3 phosphoric acid (rho1.69g/mL).

3.4 hydrochloride (11).

3.5 nitric acid (11).

3.6 potassium permanganate solution (20g/L). Store in a brown bottle aside.

3.7 ascorbic acid solution (50g/L). The time is now equipped with.

4 Distillation apparatus

Distillation apparatus shown in Fig.