Leaching of Chromium, Copper and Arsenic in Soils and Rapid Identification of CCA-Treated Woods Using Modified PAN Stain

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 monitor Cr, Cu and As leaching from CCA-treated wood products and to develop a rapid identification method for CC...

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Published inKorean Journal of Soil Science and Fertilizer Vol. 43; no. 1
Main Authors Abdelhafez, Ahmed A., Kangwon National University, Chuncheon, Republic of Korea, Awad, Yasser M., Kangwon National University, Chuncheon, Republic of Korea, Abd El-Azeem, Samy A.M., Kangwon National University, Chuncheon, Republic of Korea, Kim, M.S., Natural Environment Research Office, Hongcheon, Republic of Korea, Ham, K.J., Natural Environment Research Office, Hongcheon, Republic of Korea, Lim, K.J., Kangwon National University, Chuncheon, Republic of Korea, Yang, J.E., Kangwon National University, Chuncheon, Republic of Korea, Ok, Y.S., Kangwon National University, Chuncheon, Republic of Korea
Format Journal Article
LanguageEnglish
Published 01.02.2010
Subjects
Chromated copper arsenate
LEACHING
LESSIVAGE DU SOL
LIXIVIACION
PAN stain
SOIL
SOL
SUELO
Wood preservative
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Summary: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 monitor Cr, Cu and As leaching from CCA-treated wood products and to develop a rapid identification method for CCA-treated wood 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 from 34.38 and 33.65 mg kg-¹ at 0-1 cm to 1.72 and 7.84 mg kg-¹ at 70 cm, respectively. In general, As was more mobile than Cr and Cu in the soil. For wood 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 identification methods revealed that 100%acetone with 0.1% PAN indicator was the best combination for detection of CCA-treated wood in the field.
Bibliography:F07
2011002548
ISSN:0367-6315