Journal
MARINE POLLUTION BULLETIN
Volume 145, Issue -, Pages 153-160Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2019.05.037
Keywords
TGA-FTIR; Microplastics; Thermal analysis; Mussels; Seawater; Soil
Funding
- Project of Science and Technology by Zhejiang Food and Drug Administration, China [SP201717]
- Science Technology Department of Zhejiang Province, China [LGF18B070003]
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As a global pollutant, microplastics have attracted attention from the public and researchers. However, the lack of standard and time-saving methods for analysis has become one of the bottlenecks in microplastics research. Here, we demonstrate TGA coupled to FTIR to identify and quantify certain microplastics in environment. Samples were pyrolyzed in TGA and the pyrolysis gases were analyzed by FTIR. Combining TGA and FTIR data adds discriminatory power as temperature profiles and absorption spectra differ among several common plastics. To quantify on a mass basis, we calibrated on characteristic IR peaks at temperatures of maximum weight loss for individual polymers. The method can distinguish PVC, PS and was validated by spiking samples with known quantities of microplastics. The result of field sample experiments showed that TGA-FTIR can be used to identify and quantify PVC and PS in bivalves, seawater and soil. And the method may be applicable to environmental samples.
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