Chromium in solutions of CCA preservatives is predominantly in the hexavalent state (Cr VI). It is well known that Cr VI is associated with dermatitis and skin ulceration in workers handling chromium containing products and processes. When reduced to the trivalent state, however, chromium is considerably safer. An essential part, therefore, of safety procedures in any chromium - using industry is the prevention of skin contact with hexavalent chromium. We carried out a series of tests to determine the influence of temperature on total chromium on the surface of treated wood and the amount of Cr VI in the total.

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