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. 2023 Jul 28;28(15):5710. doi: 10.3390/molecules28155710

Table 5.

Organic-removal methods used in various studies.

S. No. Matrix Method Main Composition Temp Digestion Time Observations Recovery Ref.
1. Organic-rich freshwater Density separation with ZnCl2 + centrifugation 7% NaClO 50 °C 6 h–12 h Nylon: digestion
LDPE: centrifugation		 94% [89]
2. Mussels Oil extraction with NaCl 30% H2O2 60 °C 40 h Study needed for small MPs
Only performed for PP, PVC, and PET		 95% [126]
3. Vegetal rich clayey sediment Density separation with ZnCl2 30% H2O2 70 °C
100 °C
100 °C 		1 h
3 h
7 h		 Multiple digestion steps
High temperature can degrade MPs		 [127]
4. Algae, driftwood, and feathers H2O2+Fe2+ 50 °C 1 h Good for plant/organic-matter removal
Cellulose acetate is degraded		 65.9% [128]
5. Fish and muscles KOH 50 °C 1 h Good for animal tissues
Cellulose acetate is degraded
LDPE mass loss		 58.3% [128]
6. Edible salt Density separation with NaI + centrifugation H2O2 65 °C
30 °C		 24 h
48 h		 MPs lost during centrifugation 95% [129]