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Analysis of microplastics in environmental samples using TED-GC-MS
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This study evaluated thermal extraction-desorption gas chromatography mass spectrometry (TED-GC-MS) for analyzing microplastic polymer types and additives in environmental samples from rivers, lakes, and biota. The technique enables quantitative polymer identification and can simultaneously detect plastic additives, offering advantages over spectroscopy-only approaches for comprehensive microplastic characterization.
The presence of plastic debris and especially small plastic particles in marine ecosystems has been recognized in the 1970`s. Since then various other environmental systems all over the world, like rivers, lakes and biota have been found to be polluted by plastics. Lately, agriculturally used land, waste-water treatment and biogas facilities come into focus as possibly relevant distribution vectors. To monitor the situation and investigate distribution pathways, the need for fast and reliable analytical procedures is high. Up to now, there is no standard procedure for sampling, concentrating and analyzing plastic particles in environmental samples. Our group recently reported the development of a new analyzing method for microscale plastic particles, thermal extraction desorption gas chromatography mass spectrometry (TED-GC-MS). This method consists of thermal extraction of the sample via thermogravimetric analysis, collection of the evolved gaseous decomposition products on a solid-phase adsorber and analysis of the loaded adsorber using Thermal-Desorption-GC-MS. This technique utilizes the characteristic decomposition products of polymers for identification and even quantification of plastics in environmental samples. In the present work we investigated samples of fermentation residues taken from a biogas plant. The results of sample preparation, concentration and analysis are presented as well as a comparison with alternative methods.
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This paper describes how automated thermal extraction-desorption gas chromatography mass spectrometry (TED-GC-MS) can comprehensively characterize polymer composition and degradation products in environmental samples. The technique offers a promising approach for identifying and quantifying microplastics as well as understanding their chemical transformation in the environment.
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Thermal extraction desorption gas chromatography-mass spectrometry (TED-GC-MS) was applied to identify and quantify microplastics in sewage systems, offering a more time-efficient and comparable approach than traditional microscopy methods.
Accelerated Determination of Microplastics in Environmental Samples Using Thermal Extraction Desorption-Gas Chromatography/Mass Spectrometry (TED-GC/MS)
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This application note describes a thermal extraction desorption gas chromatography/mass spectrometry (TED-GC/MS) method for rapidly quantifying microplastics in environmental samples. The method handles larger sample sizes, detects all particle sizes above the detection limit, and is well-suited to automation for higher throughput environmental monitoring.
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