Validation of ATR FT-IR to identify polymers of plastic marine debris, including those ingested by marine organisms
Validation of ATR FT-IR to identify polymers of plastic marine debris, including those ingested by marine organisms
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DOI：
10.1016/j.marpolbul.2017.12.061
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发表时间：
2018-02-01
影响因子：
5.8
通讯作者：
Lynch, Jennifer M.
中科院分区：
文献类型：
--
作者：
Jung, Melissa R.;Horgen, F. David;Lynch, Jennifer M.
塑料海洋废弃物的聚合物鉴定可以帮助确定其来源，降解和命运。我们优化并验证了一种快速，简单，方便的技术，衰减全反射傅里叶变换红外光谱（ATR FT-IR），以确定海龟摄入的塑料中所含的聚合物。将具有已知树脂识别码#1-6和几种#7塑料的消费品的光谱与标准和原始制造的聚合物进行比较。高温尺寸排阻色谱测量证实ATR Fr-IR可以区分这些聚合物。高密度聚乙烯（HDPE）和低密度聚乙烯（LDPE）的区分是具有挑战性的，但提供了一个明确的分步指南，确定了78%的摄入PE样品。最佳的清洁方法包括用水擦拭或切割。在从50只太平洋海龟摄入的828件塑料中，96%通过ATR FT-IR鉴定为HDPE、LDPE、未知PE、聚丙烯（PP）、PE和PP混合物、聚苯乙烯、聚氯乙烯和尼龙。
Polymer identification of plastic marine debris can help identify its sources, degradation, and fate. We optimized and validated a fast, simple, and accessible technique, attenuated total reflectance Fourier transform infrared spectroscopy (ATR FT-IR), to identify polymers contained in plastic ingested by sea turtles. Spectra of consumer good items with known resin identification codes #1-6 and several #7 plastics were compared to standard and raw manufactured polymers. High temperature size exclusion chromatography measurements confirmed ATR Fr-IR could differentiate these polymers. High-density (HDPE) and low-density polyethylene (LDPE) discrimination is challenging but a clear step-by-step guide is provided that identified 78% of ingested PE samples. The optimal cleaning methods consisted of wiping ingested pieces with water or cutting. Of 828 ingested plastics pieces from 50 Pacific sea turtles, 96% were identified by ATR FT-IR as HDPE, LDPE, unknown PE, polypropylene (PP), PE and PP mixtures, polystyrene, polyvinyl chloride, and nylon.