GB/T 10574.8-2017 in English
VALIDMethods for chemical analysis of tin-lead solders―Part 8:Determination of zinc content―Flame atomic absorption spectrometric method
- Issued on:2017-10-14
- Implemented on:2018-05-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$68.00
《GB/T 10574.8-2017锡铅焊料化学分析方法 第8部分：锌量的测定 火焰原子吸收光谱法》由TC243（全国有色金属标准化技术委员会）归口，TC243SC2（全国有色金属标准化技术委员会重金属分会）执行，主管部门为中国有色金属工业协会。
Introduction
Standard Background and Technical Evolution
GB/T 10574 "Chemical Analysis Methods for Tin-Lead Solders" is divided into 14 parts, of which Part 8 (GB/T 10574.8-2017) specifically stipulates the determination method of zinc content. This revision has made a number of technical improvements to the original standard (GB/T 10574.8-2003), including adding reference standards, optimizing acidity conditions, and introducing repeatability and reproducibility indicators.
Analysis Method Summary
After the sample is dissolved in hydrobromic acid, hydrochloric acid and hydrogen peroxide, the absorbance of zinc is determined at a wavelength of 213.9 nm in a dilute hydrochloric acid-hydrobromic acid medium using an air-acetylene flame atomic absorption spectrometer. This method has high sensitivity and the characteristic concentration does not exceed 0.008 μg/mL.
Comparison of standard frameworks
| Standard number | Measurement range | Main improvements |
|---|---|---|
| GB/T 10574.8—2003 | 0.00030%~0.0050% | Unspecified repeatability and reproducibility requirements |
| GB/T 10574.8—2017 | 0.00025%~0.0050% | Increase repeatability and reproducibility requirements, optimize acidity conditions |
Implementation suggestions
1. Equipment selection:An atomic absorption spectrometer equipped with a zinc hollow cathode lamp is preferred to ensure sensitivity and linearity requirements.
2. Sample processing:Strictly follow the standard sample preparation process to avoid introducing interference from impurities. It is recommended to use a polytetrafluoroethylene beaker for heating and dissolving.
3. Data analysis:Pay attention to linear range verification when drawing the working curve to ensure that the measured value is within the valid range. The calculation result is retained to four decimal places (retain five decimal places when less than 0.0010%).
Loading PDF document...
Error loading PDF. Please make sure the file is valid and try again.
We also recommend
-
GB/T 4103.18-2024 in English
Methods for chemical analysis of lead and lead alloys—Part 18：Determination of silver, copper, bismuth, arsenic, antimony, tin, zinc, iron, cadmium, nickel, magnesium, aluminum, calcium, selenium and tellurium contents—Inductively coupled plasma mass spectrometry
2024-04-25 -
GB/T 26042-2010 in English
Methods for analysis of zinc and zinc alloys—The optical emission spectrometry
2011-01-10 -
GB/T 3260.11-2023 in English
Methods for chemical analysis of tin—Part 11：Determination of copper,iron,bismuth,lead,antimony,arsenic,aluminum,zinc,cadmium,silver,nickel and cobalt contents—Inductively coupled plasma atomic emission spectrometry
2023-11-27 -
GB/T 4372.1-2014 in English
Methods for chemical analysis of zincoxide produced by direct process―Part 1:Determination of zinc oxide content―Na2EDTA titration method
2014-12-05 -
GB/T 12689.1-2010 in English
Methods for chemical analysis of zinc and zinc alloys—Part 1:Determination of aluminum content—Chromazurol Spolyethylene glycol octyl phenylether-cetylpyridine bromine spectrophotometry,Chromeazurol S spectrophotometric method and EDTA titrimetry
2011-01-14 -
GB/T 8151.1-2012 in English
Methods for chemical analysis of zinc concentrates—Part 1:Determination of zinc content—Precipitate separation-Na2EDTA titrimetric method and extractive separation-Na2EDTA titrimetric method
2012-12-31
