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Chemical additives in weathered microplastic in the marine environment occurrence and risk:occurrence and risk

2022 Score: 25 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Patrik Fauser, Patrik Fauser, Katrin Vorkamp Linyan Zhu, André S. Bogevik, Sophie Jensen, André S. Bogevik, Patrik Fauser, Patrik Fauser, Patrik Fauser, Katrin Vorkamp Katrin Vorkamp, Katrin Vorkamp Linyan Zhu, Linyan Zhu, Hans Sanderson, Katrin Vorkamp Katrin Vorkamp Hans Sanderson, Patrik Fauser, Katrin Vorkamp André S. Bogevik, Patrik Fauser, Katrin Vorkamp Sophie Jensen, Katrin Vorkamp Sophie Jensen, Katrin Vorkamp Katrin Vorkamp, André S. Bogevik, Katrin Vorkamp Katrin Vorkamp Katrin Vorkamp Katrin Vorkamp, Katrin Vorkamp Katrin Vorkamp Katrin Vorkamp André S. Bogevik, André S. Bogevik, Katrin Vorkamp Katrin Vorkamp Katrin Vorkamp Katrin Vorkamp

Summary

Researchers measured chemical additives — including phthalate plasticizers known to disrupt hormones — in polyurethane and PVC plastics before and after four months of weathering in a Norwegian fjord, finding that concentrations reached up to 1,000 nanograms per gram of plastic and that risk to marine organisms remained low, though non-target screening flagged additional unidentified compounds of concern.

A Nordic project identified and measured residues of chemical additives in polyurethane (PUR) and polyvinyl chloride (PVC). Measurements were done in new plastic, and in plastic weathered for four months in Samnangerfjorden near Bergen. Targeted chemical analysis with GC-Orbitrap was performed for identification and GC-MS analysis for quantification. Four plasticizers were detected in PUR and three in PVC, before and after weathering: Dibutyl adipate, N-butylbenzenesulphonamide (only in PUR), dibutyl phthalate, and di-2-ethylhexyl phthalate (DEHP). Maximum concentrations were approx. 1000 ng/g plastic. Also triphenyl phosphite and octadecyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate were identified. Risk quotients for copepods, cod and fulmar showed low risk. Additionally, non-target screening with GC-Orbitrap identified sixteen chemicals, of which two had hazard classifications.

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