Reference number
ISO 3856-4:1984
© ISO 2024
International Standard
ISO 3856-4:1984
Paints and varnishes — Determination of "soluble" metal content — Part 4: Determination of cadmium content — Flame atomic absorption spectrometric method and polarographic method
Edition 2
1984-10
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Published (Edition 2, 1984)
This publication was last reviewed and confirmed in 2023. Therefore this version remains current.

ISO 3856-4:1984

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Format
CHF 42
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Abstract

The principle of the AAS method consists in inspiration of the test solution into an acetylen/air flame. Measurement of the absorption of the selected spectral line emitted by a cadmium hollow-cathode or cadmium discharge lamp, in the region of 228,8 nm. The principle of the polarographic method consists in electrolysis of the test solution in a polarographic cell measurement of the corresponding heigth of the potential step. The method are applicable to coating materials having "soluble" cadmium contents in the range of about 0,05 % (m/m) to 5 % (m/m). The AAS method should be used as the referee method in cases of dispute. This second edition cancels and replaces ISO 3856/4-1980.

General information

  • Status
     : Published
    Publication date
     : 1984-10
    Stage
    : International Standard confirmed [90.93]
  • Edition
     : 2
    Number of pages
     : 6
  • Technical Committee :
    ISO/TC 256
    ICS :
    87.040 
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