A novel thermoanalytical method for quantifying microplastics in marine sediments
| Autor: | Qin-Qing Wang, Xiao-Ming Xu, Bei-Ying Yue, Jiang-Hai Wang, Jin-Zhong Liu, Xiang-Po Xu, Jia Lin, Yan Li, Qian-Zhi Zhou |
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| Rok vydání: | 2021 |
| Předmět: |
Pollution
Microplastics Environmental Engineering 010504 meteorology & atmospheric sciences media_common.quotation_subject 010501 environmental sciences 01 natural sciences Environmental chemistry Environmental Chemistry Environmental science Ecosystem Waste Management and Disposal 0105 earth and related environmental sciences media_common |
| Zdroj: | Science of The Total Environment. 760:144316 |
| ISSN: | 0048-9697 |
| DOI: | 10.1016/j.scitotenv.2020.144316 |
| Popis: | Microplastic pollution in marine environments is of particular concern on its risk to the ecosystem. To assess and manage microplastic contaminants, their quantitative detection in environmental samples is a high priority. However, uncertainties of current methods still exist when estimating their abundances, particularly with fine-grained (1 mm) microplastics. This work reports a novel thermoanalytical method for quantifying microplastics by measuring the contents of microplastic-derived carbon (MPC) in samples under the premise of nearly eliminating the limit of their particle appearances. After validating the method via samples with the spiked microplastics, we have conducted a case study on sediment core H43 that spanned 1925-2009 CE from the Yellow Sea for further illustrating the high reliability and practicability of this method for quantifying microplastics in natural samples. Our results have demonstrated that the proposed method may be a promising technique to determine the mass-related concentrations of the total microplastics in marine sediments for evaluating their pollution status and quantitative contribution to marine carbon storage. |
| Databáze: | OpenAIRE |
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