Identification of CCA-treated wood using chemical staining reagents in house demolition on site
2006
Seino, S.(Hokkaido. Forest Products Research Inst., Asahikawa (Japan)) | Azuma, T. | Yamazaki, M. | Sato, M.
Four chemical staining reagents were evaluated for on-site identification of CCA-treated wood from untreated wood in house demolition. Among the tested chemicals, PAN indicator, chrome azurol S, and diphenylcarbonohydrazide had good performance, and some preparations to expose fresh wood surfaces could prevent misjudgment due to contaminated wood surfaces, easily and effectively. These three reagents also stained by the reaction of non-CCA preservatives including copper. However, CCA-treated wood is estimated to be dominant type of preservative-impregnated waste from demolished houses at present. Thus, these reagents are applicable to detect CCA-treated wood from house demolition.
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