电子电气产品中某些物质的测定 第7-1部分:六价铬 比色法测定金属上无色和有色防腐镀层中的六价铬[Cr(VI)]
Determination of certain substances in electrical and electronic products—Part 7-1:Hexavalent chromium—Presence of hexavalent chromium [Cr(VI)] in colourless and coloured corrosion-protected coatings on metals by the colorimetric method