Chemical Fingerprinting of Synthetic Polymers via Direct Insertion Probe Mass Spectrometry
Ville H. Nissinen, Nea Heilala, Krista Grönlund, Paavo Auvinen, Mika Suvanto, Jarkko J. Saarinen, Janne Jänis
TL;DR
This paper introduces a new method for identifying synthetic polymers using mass spectrometry with minimal sample prep, useful for recycling and environmental analysis.
Contribution
The novel use of temperature-programmed DIP-APCI-MS for polymer chemical fingerprinting with minimal preparation.
Findings
DIP-APCI-MS enabled reliable identification of 38 polymers via thermal decomposition patterns.
The method provides detailed structural information and monitors degradation with temperature.
It shows potential for applications in microplastic analysis and plastic recycling.
Abstract
We report on the chemical fingerprinting of synthetic polymers using direct insertion probe mass spectrometry (DIP-MS), an analytical approach requiring only minimal sample preparation. A total of 38 different polymers were analyzed using temperature-programmed DIP-MS with atmospheric pressure chemical ionization (APCI) to establish a comprehensive spectral library. The studied polymers included homo- and copolymers from various classes, such as polyolefins, polyethers, polyesters, polyamides, styrenics, thermoplastic elastomers, and fluoropolymers. DIP-APCI-MS provided detailed structural information, enabling reliable identification of nearly all polymers based on their characteristic thermal decomposition patterns. Moreover, the utilization of temperature-programmed approach allowed monitoring of sample degradation as a function of temperature, further aiding polymer identification.…
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Taxonomy
TopicsAnalytical chemistry methods development · Mass Spectrometry Techniques and Applications · Forensic Fingerprint Detection Methods