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The recovery of microplastics from rock oysters using digestion method

Razali, Azaima and Miskon, Mohd Fuad and Che Nan, Siti Nursyamsulbahria (2022) The recovery of microplastics from rock oysters using digestion method. Iranian Journal of Chemistry and Chemical Engineering. ISSN 1021-9986 (In Press)

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The widespread deposition of microplastics (<5.0 mm) in the marine environment have appeared to be pervasive across the globe. It has led to major attention of many researchers to study this problem. Despite the amount of work conducted to understand these infamous microplastics, there is still no standard procedure for microplastics extraction from marine organism samples. This study investigated three types of digestion treatments; (1) KOH, (2) KOH/H2O2, and (3) KOH/NaClO, followed by density separation using 50% KI to extract the spiked microplastics from the rock oyster. Each treatment was tested to study the digestion effectiveness of the organic soft tissue materials while preserving the microplastic particles. Aside from recovering the spiked microplastics, other small contaminants have been detected in each treatment. All the spiked microplastics and the contaminants obtained were analysed using microscope and FTIR for characterisation. From this study, it was observed that each treatment resulted in high microplastics recovery. Among the three treatments, using 10% KOH alone provided the highest digestion rate, but it required more time to digest the oyster soft tissue. The contaminants detected in the oyster suggested the possibility of microplastics accumulation in non-digestion organs through adherence.

Item Type: Article (Journal)
Uncontrolled Keywords: microplastics; digestion; comparison; oyster; adherence
Subjects: Q Science > Q Science (General)
Q Science > QD Chemistry
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Science > Department of Chemistry
Depositing User: Dr Azaima Razali
Date Deposited: 01 Mar 2022 16:21
Last Modified: 01 Mar 2022 16:21
URI: http://irep.iium.edu.my/id/eprint/96979

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