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首页> 外文期刊>Journal of Environmental Science and Health. A, Toxic/Hazardous Substances & Environmental Engineering >Identification of different kinds of plastics using laser-induced breakdown spectroscopy for waste management
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Identification of different kinds of plastics using laser-induced breakdown spectroscopy for waste management

机译：使用激光诱导击穿光谱法识别不同种类的塑料以进行废物管理

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Laser-Induced Breakdown Spectroscopy (LIBS) was applied for the identification of various kinds of plastics for management and recycling of plastic waste. In order to fingerprint these plastics, a laser-produced plasma emission was recorded for spectral analysis of various kinds of plastics. The plasma was generated by focusing a Nd:YAG laser radiation at wavelength = 1064 nm having laser energy = 40 mJ. The 6 main family of plastics tested are: Low Density Polyethylene (LDPE), High Density Polyethylene (HDPE), Polypropylenes (PP), Polystyrene (PS), Polyethylene Terephthalate (PET) and Polyvinyl chloride (PVC). The capability of this technique is demonstrated by the analysis of the major constituents carbon and hydrogen present in polymer matrices. The LIBS signal intensity measured for carbon and hydrogen was detrimental for the fingerprinting of various kinds of plastics. The C/H line intensity ratio was 1.68, 1.51, 1.42, 1.16, 1.01 and 0.91 for HDPE, LDPE, PS, PP, PET and PVC respectively. The detection limits of carbon and hydrogen were found to be approximately 6 μg/g by applying 20 laser shots. The unique features of LIBS are: it is a simple, rapid, remote, real-time analysis without sampling requirements. The study demonstrated that LIBS could be applied as a best tool for sorting out different kinds plastics on a fast scale for waste management. The health hazards of different kinds of plastics are also described.
机译：激光诱导击穿光谱法（LIBS）用于鉴定各种塑料，以管理和回收塑料废料。为了对这些塑料进行指纹识别，记录了激光产生的等离子体发射，用于各种塑料的光谱分析。通过将Nd：YAG激光辐射聚焦在波长= 1064 nm，激光能量= 40 mJ的激光束中，产生等离子体。测试的6种主要塑料家族是：低密度聚乙烯（LDPE），高密度聚乙烯（HDPE），聚丙烯（PP），聚苯乙烯（PS），聚对苯二甲酸乙二酯（PET）和聚氯乙烯（PVC）。通过分析聚合物基质中存在的主要成分碳和氢，证明了该技术的能力。测得的碳和氢的LIBS信号强度不利于各种塑料的指纹识别。 HDPE，LDPE，PS，PP，PET和PVC的C / H线强度比分别为1.68、1.51、1.42、1.16、1.01和0.91。通过施加20次激光照射，发现碳和氢的检出限约为6μg/ g。 LIBS的独特功能是：它是一种简单，快速，远程，实时的分析，无需采样。研究表明，LIBS可以作为一种最佳工具，用于快速分类各种塑料以进行废物管理。还描述了各种塑料的健康危害。

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