Leaching of Chromium, CopperandArsenic in Soils andRapid Identification of CCA-Treated Woods Using Modified PAN Stain

초록

Although several studies have reported that Cr, Cu and As can leach from CCA-treated woods, few studies have been conducted on this topic in Korea. Therefore, this study was conducted to monitorCr, Cu and As leaching fromCCA-treatedwood products and to develop a rapid identificationmethod forCCA-treatedwood products by using indicators such as PAN stain. Soil samples were collected at depths of 0-70 cm and wood samples were collected by thickness of wood layer. The soil and wood samples were then digested and analyzed for Cr, Cu and As concentrations using an atomic absorption spectrometer. The As and Cu concentrations decreased sharply with depth from34.38 and 33.65 mg kg-1 at0-1 cmto 1.72 and7.84mg kg-1at 70 cm, respectively. In general, As was more mobile thanCrandCu in the soil. Forwood samples, the Cr,Cu and As concentrations were higher in the outer layer (0-0.5cm) than the inner layers (0.6-4.5cm). Evaluation of rapid identificationmethods revealed that 100%acetone with 0.1%PAN indicatorwas the best combination fordetection of CCA-treated wood in the field.

키워드