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. 2021 Oct 7;292:118299. doi: 10.1016/j.envpol.2021.118299

Table 2.

Microphotographs and FTIR spectra of the main types of microplastics.

Sample Image Spectrum Reference spectrum Spectrum overlay Chemical characterization
02covid_part1 Image 1 Image 2 Image 3 Image 4 Poly(ethyl acrylate)
HR Hummel Polymer and Additives (match: 83%)
hv04_part1_ATR Image 5 Image 6 Image 7 Image 8 Poly(butyl acrylate:acrylic acid),
HR Hummel Polymer and Additives (match: 83%)
hv13covid_1 Image 9 Image 10 Image 11 Image 12 Poly(acrylonitrile:vinylidene chloride)
HR Hummel Polymer and Additives (71%)
hvcovid26_1 Image 13 Image 14 Image 15 Image 16 Polyether urethane
HR Hummel Polymer and Additives (71%)
hv02cov_07 Image 17 Image 18 Image 19 Image 20 Polyester, terephthalic
HR Hummel Polymer and Additives (match: 72%)