Do the hexavalent chromium substances only occur (temporarily) during the production process (i.e. the chrome plating) or will they remain with the product?
My naïve impression has been that after the chrome plating process is over, the product will have an additionally a more or less thick layer of native
Cr. Is this correct?
Should I expect impurities or residuals of toxic forms (e.g. hexvalent chromium) to be with the chrome plated this is possible do primitive test exist to detect product?
If it is possible that the chrome plated object could have worrisome concentrations/amounts of Cr(IV), is there a primitive test to detect this?
Some internet resources, such as tests/detection procedures for
Cr(IV) described here, mention
The screening method can be used to determine chromium(VI) in passivation layers on metal pieces.
Also test kits for
Cr(IV) sold online mention in their description to be
test[s] to detect leachable
Cr (VI)ions on virtually any solid surface.
both giving reason to thing that the
Cr (VI) might remain in worrisome amounts after the chrome plating. True.
one of the answers mentioned that "chrome plating", being understood as a general term, does not necessarily imply which material is being plated. If permissible I would like to add that I am most interested in those risks of the base material being copper.
The most upvoted answer has stated little risk if chrome plating procedure is carried out well.
As new information the CHROME PLATINGANDCHROMIC ACID ANODIZING SURVEY strongly suggests that the term
chrome plating, can be divided regarding the categories a) Tank process (Hard plating; decorative; chromic acid anodizing) and b) *Tank constituent(s) (Hexavalent chrome; trivalent chrome).
This information to raises the aspect, if the outer passivated layer should be expected to have only
Cr(III), irrespective of the used tank constituents.