Field testing of CCA-treated Brazilian spotted gum

被引：10
作者：
Esteves Magalhaes, Washington Luiz [2 ,3 ]
Mattos, Bruno Dufau [1 ]
Missio, Andre Luiz [4 ]
机构：
[1] Univ Fed Pelotas, BR-96010900 Pelotas, RS, Brazil
[2] Embrapa Forestry, BR-83411000 Colombo, PR, Brazil
[3] Univ Estadual Ponta Grossa, BR-84030900 Ponta Grossa, PR, Brazil
[4] Univ Fed Santa Maria, BR-97105900 Santa Maria, RS, Brazil
来源：
INTERNATIONAL BIODETERIORATION & BIODEGRADATION | 2012年 / 74卷
关键词：
Leaching; CCA; Wood chemistry; COPPER; WOOD;
D O I：
10.1016/j.ibiod.2012.05.024
中图分类号：
Q81 [生物工程学（生物技术）]; Q93 [微生物学];
学科分类号：
071005 ; 0836 ; 090102 ; 100705 ;
摘要：
Field tests were used to evaluate the durability of fenceposts treated with 6.5 kg of chromated copper arsenate (CCA) per m(3) of wood. Decay was assessed by qualitative visual analysis and by changes in the chemical structure of the wood. Leaching of CCA from treated fencepost was evaluated by atomic absorption spectroscopy. Moreover, extractives and the acid insoluble lignin were quantified. Treated wood was in perfect condition after 6 yr, in contrast to the untreated wood. Percentages of extractives and lignin increased in the untreated decayed wood. Cr and Cu both migrated from wood to soil, but the concentrations were below those allowed by local environmental law. (C) 2012 Elsevier Ltd. All rights reserved.
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收藏
页码：124 / 128
页数：5
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