期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 401, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jhazmat.2020.123287
关键词
Microwave-assisted extraction; Plastics; Additives; Double shot-analytical pyrolysis; Evolved gas analysis; Mass spectrometry
资金
- University of Pisa [PRA_2018_26]
- Fondazione Carilucca -Research 2019 project Micro and nano-plastics: quantification, evaluation of their impact on marine and lacustrine ecosystems, and remediation strategies (2019-2021)
This study investigated the potential of microwave-assisted solvent extraction and double-shot Py-GC MS for analyzing microplastics and harmful additives in environmental samples, providing qualitative and quantitative information on plastic content and pollution levels, and discussing the impact of environmental factors on polymer leaching and degradation processes.
Pollution from microplastics (MPs) needs to be evaluated by deploying reliable analytical techniques that provide qualitative and quantitative data on the extent of contamination in the various environmental matrices. Solvent extraction of MPs followed by pyrolysis-gas chromatography-mass spectrometry (Py-GC MS) provides data that not only regard the soluble plastics, but also the organic additives contained in MPs and the lowmolecular weight degradation products of insoluble plastics. In this study, the potential of microwave-assisted solvent extraction and double-shot Py-GC MS was investigated in order to obtain quali-quantitative information on polystyrene and on phthalate plasticizers in environmental samples. The method was validated and provided recoveries higher than 96 %, and detection limits lower than 1 ng and 1 lig for phthalates and polystyrene, respectively. We used the method to analyze samples of sand collected from a shoreline in Tuscany (central Italy) and thereby determine the content of phthalates and polystyrene at different depths and distances from the coastline. Qualitative data were also obtained regarding the presence of oxidation products derived from polyethylene and polypropylene. The different contents of plasticizers, plastics, and degradation products in the investigated samples are discussed in relation to how environmental agents affect the leaching and degradation processes of the polymers.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据