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Validation of ATR FT-IR to identify polymers of plastic marine debris, including those ingested by marine organisms
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2018
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Source: Marine Pollution Bulletin, 127, 704-716
[PDF-3.01 MB]
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Journal Title:Marine Pollution Bulletin
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Description: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 FT-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.
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Source:Marine Pollution Bulletin, 127, 704-716
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ISSN:0025-326X
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Rights Information:Accepted Manuscript
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Compliance:Library
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