Real-time identification of plastics by types using laser-induced breakdown spectroscopy
Real-time identification of plastics by types using laser-induced breakdown spectroscopy
复制标题
DOI：
10.1007/s10163-018-0780-z
复制
发表时间：
2019-01-01
影响因子：
3.1
通讯作者：
Choi, Woo Zin
中科院分区：
文献类型：
--
作者：
Kim, Eunok;Choi, Woo Zin
采用激光诱导击穿光谱法对不同类型的塑料进行实时鉴定。研究了黑色家电中最常用的聚丙烯、丙烯腈-丁二烯-苯乙烯、聚苯乙烯和聚对苯二甲酸乙二醇酯等塑料的等离子体发射光谱。证实了C/H光谱线强度比随塑料种类的不同而变化。通过在芳烃片段中存在离域的C-C键来区分脂肪族和芳烃聚合物，揭示了化学结构与C-2天鹅带发射之间的相关性。通过监测杂原子的发射谱线特性，可以选择性地检测含有杂原子的塑料。尽管四种塑料的化学结构相似，但它们还是被成功地鉴定了出来。
Laser-induced breakdown spectroscopy was applied for real-time identification of different types of plastics. The plasma emission spectra of polypropylene, acrylonitrile-butadiene-styrene, polystyrene, and polyethylene terephthalate, the most commonly used plastics in black household appliances, were studied. It was confirmed that the C/H spectral line intensity ratio varies depending on the type of plastics. Aliphatic and aromatic polymers were discriminated owing to the presence of delocalized C-C bonds in the aromatic fragments, revealing a correlation between the chemical structure and emission of the C-2 Swan bands. Plastics containing a heteroatom could be selectively detected by monitoring the emission line characteristics of the heteroatom. Four types of plastics were successfully identified despite their similar chemical structure.