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Characteristics of the release of chromium, copper, and arsenic from CCA-treated wood exposed to the natural environment
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2008, v.21 no.1, pp.1-8
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(2008). Characteristics of the release of chromium, copper, and arsenic from CCA-treated wood exposed to the natural environment. Analytical Science and Technology, 21(1), 1-8.
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Abstract
이 연구에서는 chromated copper arsenate(CCA)로 처리된 방부목재가 실외환경에 노출될 때 금 속들의 용탈 특성을 알아보았다. CCA 방부목재를 수평 또는 토양에 묻은 채 수직으로 1년 동안 노출시 켰다. 수평으로 노출된 목재의 옆면에서 매월 드릴로 목재 시료를 채취하였고, 노출이 종료된 후에는 톱 밥 시료를 채취했다. 수직으로 노출시킨 목재 주변에서는 표토를, 그리고 깊이별로 토양 시료를 채취하 였다. 채취한 시료는 원자흡광광도계(AAS)로 분석하였다. 목재 표면 부위에서의 농도는 강우에 따라 매 월 변하였고, 목재가 수평으로 노출된 경우보다는 수직으로 노출된 경우 금속들이 더 많이 용탈되었다. 비소의 경우에는 노출 전에 비해 80 % 정도까지 용탈되었다. 또한 지상보다는 지하 부위에서 더 많이 용 탈되었으며, 수직으로 세운 말뚝 주변의 토양은 금속으로 오염되었다.
- keywords
- CCA, arsenic, chromium, copper, leaching, wood preservative
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