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. 2022 Feb 8;10:e12902. doi: 10.7717/peerj.12902

Table 2. Types of MPs identified with FTIR.

Whole body GT Body without the GT Total
no. % no. % no. % no. %
Particles measured 21 100 14 100 17 100 52 100
MP particles 10 47.6a 5 35.7 9 52.9 24 46.1
Polyethylene terephthalate (PET) 7 70.0b 5 100.0 5 55.6 17 70.8
Polypropylene (PP) 2 20.0 0 0 4 44.4 6 25.0
Polymethyl methacrylate (PMMA) 1 10.0 0 0 0 0 1 4.2
Non MP particles 3 14.3 4 28.6 1 5.9 8 15.4
Cellulose powder 1 33.3 1 25.0 0 0 2 25.0
Polyethylene glycol 2 66.7 2 50.0 0 0 4 50.0
Xanthan gum 0 0 1 25.0 0 0 1 12.5
Hydroxyethyl cellulose 0 0 0 0 1 100.0 1 12.5
Unidentified particles 8 38.1 5 35.7 7 41.2 20 38.5

Notes.

a

The percentage of MP particles in all the measured particles.

b

The percentage of each type in all the MP particles.