Rapid Identification of CCA-Treated Wood using Laser-Induced Breakdown Spectroscopy
Rapid Identification of CCA-Treated Wood using Laser-Induced Breakdown Spectroscopy
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使用激光诱导击穿光谱快速鉴定经过 CCA 处理的木材
DOI：
10.1007/s10086-012-1256-8
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发表时间：
2012
影响因子：
2.9
通讯作者：
Nobuaki HATTORI (Yurie AONO)
中科院分区：
文献类型：
--
作者：
Yurie AONO;Keisuke ANDO;Nobuaki HATTORI (Yurie AONO)
由于铬化砷酸铜（CCA）中含有铜、铬和砷，废CCA处理过的木材在焚烧时由于铬和砷对环境的污染以及法规的规定，必须与其他处理过的木材分开。因此，开发了一种利用激光诱导击穿光谱（LIBS）识别cca处理木材的方法。利用实验室组装的LIBS装置，利用Nd:YAG激光器发射的1064 nm (55 mJ/mm2) 4 ns脉冲，在木材表面产生等离子体。等离子体的荧光用椭球镜收集，用光谱仪在190-300 nm范围内进行分析。结果表明，砷源228.7 nm谱线和铬源267.6 nm谱线可用于cca处理木材的鉴别。通过x射线荧光元素组成分析证实了LIBS的鉴别能力，认为LIBS能够特异性地鉴别经cca处理的木材。
As chromated copper arsenate (CCA) contains copper, chromium and arsenic, waste CCA-treated wood must be separated from other treated wood because of environmental pollution by chromium and arsenic when it is incinerated and the regulation. Therefore, a method to identify CCA-treated wood was developed using laser-induced breakdown spectroscopy (LIBS). Using the LIBS apparatus assembled in our laboratory, plasma on a wood surface was generated by a 4 ns pulse of 1064 nm (55 mJ/mm2) emitted from Nd:YAG laser. Fluorescence from the plasma was collected by an ellipsoidal mirror and analyzed by a spectrometer in the range of 190–300 nm. The results showed that the 228.7 nm line from As and 267.6 nm line from Cr were useful for the identification of CCA-treated wood. As the discrimination capacity was confirmed by the elemental composition analysis by X-ray fluorescence, it was concluded that LIBS can specifically identify CCA-treated wood.