GB/T 12689.4-2004 《The methods for chemical analysis of zinc and zinc alloys--The determination of copper content--The lead diethyldithio-carbamate spectrophotometric method and the flame atomic absorption spectrometric method and the electrolytic method》 Related products
This standard specifies three methods for the determination of copper content in zinc and zinc alloys, applicable to the determination range of 0.00010% to 0.010%. The standard details the determination principles and operating procedures of diethyldithioamino formic acid lead Spectrophotometric method, spectrophotometry, flame atomic absorption spectroscopy (AAS) method and electrolysis method. In Spectrophotometric method, spectrophotometry, copper forms a yellow complex with diethyldithioamino formic acid lead in trichloromethane solution, and its Absorbance is measured by spectrophotometer at 440 nm wavelength. The standard also provides detailed information on the required reagents and instrumentation.
This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.
| Status | Active |
|---|---|
| CCS | H13 | ICS | 77.040.30 |
| Release Date | 2004-04-30 00:00:00 | Implementation Date | 2004-10-01 00:00:00 |
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Extended reading
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