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EVS-EN 62321-7-1:2015

Determination of certain substances in electrotechnical products - Part 7-1: Determination of the presence of hexavalent chromium (Cr(VI)) in colorless and colored corrosion-protected coatings on metals by the colorimetric method

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Kehtiv alates 05.01.2016
Alusdokumendid
EN 62321-7-1:2015; IEC 62321-7-1:2015
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Nimetus
05.01.2016
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This part of IEC 62321 describes a boiling water extraction procedure intended to provide a qualitative determination of the presence of hexavalent chromium (Cr(VI)) in colourless and coloured corrosion-protection coatings on metallic samples. Due to its highly reactive nature, the concentration of Cr(VI) in a corrosion-protection coating can change drastically with time and storage conditions. Since storage conditions prior to sample submission are not often known or provided with the samples, this procedure determines the presence of Cr(VI) based on the levels detected in the coatings at the time of testing. For testing of freshly coated samples, a minimum waiting period of 5 days (after the coating process) is necessary to ensure the coatings have stabilized. This waiting period allows potential post-process oxidation of Cr(III) to Cr(VI) to occur prior to testing.
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EVS-EN 62321-6:2015

Determination of certain substances in electrotechnical products - Part 6: Polybrominated biphenyls and polybrominated diphenyl ethers in polymers by gas chromatography-mass spectrometry (GC-MS)
Uusim versioon Kehtiv alates 06.10.2015
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EVS-EN 62321-4:2014

Determination of certain substances in electrotechnical products - Part 4: Mercury in polymers, metals and electronics by CV-AAS, CV-AFS, ICP-OES and ICP-MS
Uusim versioon Kehtiv alates 05.06.2014
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EVS-EN 62321-5:2014

Determination of certain substances in electrotechnical products - Part 5: Cadmium, lead and chromium in polymers and electronics and cadmium and lead in metals by AAS, AFS, ICP-OES and ICP-MS
Uusim versioon Kehtiv alates 05.06.2014
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EVS-EN 62321-2:2014

Determination of certain substances in electrotechnical products - Part 2: Disassembly, disjointment and mechanical sample preparation
Uusim versioon Kehtiv alates 05.06.2014