Thank you for the reply. However, we are still looking for the analytical
method for Cr+6 analysis in polymer such as plastic.
All of analytical method described here are mainly for environmental samples
such as water, dust, soil and waste water. In this case, Cr+6 is extracted
from adsorbed and soluble forms of chromium compound by alkaline extraction.
In order to analyze Cr+6 in plastic, plastic sample has to be crushed and
grinded. As a result, the extraction efficiency by alkaline extraction
would be dependent upon size and shape of sample.
Is there any standard method for Cr+6 analysis in plastic ?
Gae H. Lee
Department of Chemistry
Dae Jeon, 305-764
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