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The individual and combined effects of cadmium, polyvinyl chloride (PVC) microplastics and their polyalkylamines modified forms on meiobenthic features in a microcosm

Environmental Pollution 2020 73 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 50 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Takwa Wakkaf, Takwa Wakkaf, Mohamed Allouche, Takwa Wakkaf, Takwa Wakkaf, Mohamed Allouche, Mohamed Allouche, Takwa Wakkaf, Takwa Wakkaf, Takwa Wakkaf, Takwa Wakkaf, Hamouda Beyrem Mohamed Allouche, Mohamed Allouche, Fehmi Boufahja, Hamouda Beyrem Abdel Halim Harrath, Mohamed Allouche, Badreddine Sellami, Lamjed Mansour, Mohamed Allouche, Saleh Alwasel, Badreddine Sellami, Abdel Halim Harrath, Abdel Halim Harrath, Hamouda Beyrem Fehmi Boufahja, Lamjed Mansour, Lamjed Mansour, Kapuli Gani Mohamed Thameemul Ansari, Lamjed Mansour, Hamouda Beyrem Hamouda Beyrem Hamouda Beyrem Hamouda Beyrem Badreddine Sellami, Abdel Halim Harrath, Fehmi Boufahja, Fehmi Boufahja, Badreddine Sellami, Fehmi Boufahja, Fehmi Boufahja, Fehmi Boufahja, Fehmi Boufahja, Fehmi Boufahja, Badreddine Sellami, Fehmi Boufahja, Hamouda Beyrem

Summary

A month-long microcosm experiment tested PVC microplastics, their amine-modified forms, and cadmium — alone and in mixtures — on marine sediment meiofauna, finding that individual contaminants were toxic to nematodes but that binary mixtures caused less harm, likely because PVC chelates cadmium.

Polymers

PVC

Models

C elegans

A microcosm experiment was carried out to study the ecotoxicity and interactions between heavy metals and polyvinyl chloride microplastics. Fifteen treatments were tested and results were examined after one month. In details, this work aims to study the ecotoxicological effects of cadmium (10 and 20 mg kg Dry Weight DW), polyvinyl chloride (PVC) and its modified forms; PVC-DETA (PD) and PVC-TETA (PT) (20 and 40 mg kg DW), separately and in mixtures, on meiofauna from Bizerte lagoon (NE Tunisia) with focus on nematode features. The results obtained showed that individual treatments were toxic for meiofauna and particularly for free-living nematodes. No clear trends characterized the numerical responses but significant reductions were observed for diversity indices. Moreover, the binary combinations of contaminants have a lesser toxic effect compared to their individual effects. This effect could be related to the high-capacity chelating ability of PVC and its polymers against cadmium.

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