GB/T 9758.4-1988 "Paints and varnishes - Determination of 'soluble' metal content - Part 4: Determination of cadmium content - Flame atomic absorption spectrometric method and polarographic method" specifies two methods for determining the "soluble" cadmium content in paints and varnishes, applicable to the detection of heavy metals in coatings. The flame atomic absorption spectrometric method quantifies cadmium based on its atomic absorption characteristics, while the polarographic method analyzes it through changes in current during electrolysis. The detection requires instruments such as flame atomic absorption spectrometers, polarographs, digestion equipment, and volumetric flasks to ensure the safe limit control of cadmium elements in coatings.
| Status | Active | ||
|---|---|---|---|
| CCS | G50 | ICS | 87.040 |
| Release Date | 1988-09-05 00:00:00 | Implementation Date | 1989-04-01 00:00:00 |
