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Optimalizace MALDI-TOF hmotnostní spektrometrie pro detekci plastových částic
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This study optimized MALDI-TOF mass spectrometry parameters including laser energy, matrix type, and cationizing agent to create a new method for identifying and quantifying polystyrene microplastics. Peaks corresponding to PS monomers were successfully identified under optimal conditions, representing one of the first attempts to quantify environmental microplastics using MALDI-TOF MS.
Microplastics pose a global threat to the environment, but there is still a lack of an effective way to detect them. This work focuses on the creation of a new method of identifying and quantifying microplastics using mass spectrometry (MS) using a matrix-assisted laser desorption/ionisation (MALDI) in conjunction with a time-of-flight analyser (TOF). This work optimised factors influencing measurements such as laser energy, matrix type (M), analyte (A), cationising agent (C) and their ratio. Peaks corresponding to polystyrene and the weight differences due to the molecular mass of the monomers were identified under optimal conditions. This work represents one of the first attempts to create a method of quantification using MALDI-TOF MS for the analysis of microplastics in environmental samples. The proposed method can not only provide an effective tool for analysing microplastics, but can also inspire future studies on the distribution and transformation of microplastics in situ in environmental and biological samples.
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Thermal fragmentation enhanced identification and quantification of polystyrene micro/nanoplastics in complex media
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Researchers developed a method using thermal fragmentation combined with MALDI-TOF mass spectrometry to identify and quantify polystyrene micro/nanoplastics in complex media, enabling reliable fingerprint-based detection and quantification down to nanoplastic size ranges.
Mass Spectrometry as an Analytical Tool for Detection of Microplastics in the Environment
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This review evaluates mass spectrometry techniques for detecting microplastics in the environment, covering GC-MS, LC-MS, MALDI-MS, and pyrolysis-based methods while comparing their capabilities for polymer identification, quantification, and size characterization.
Mikroplastik - Źródła, Techniki Separacji I Identyfikacji
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This review (in Polish) covers microplastics — their sources in the environment and the analytical techniques used to separate and identify them. The paper provides an overview of sampling, extraction, and spectroscopic identification methods relevant to environmental monitoring of microplastic pollution.
Methods for the detection of microplastics in environmental samples.
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This study assessed how tire wear particles contribute to microplastic loading in urban stormwater runoff, finding that road runoff from high-traffic areas contained high concentrations of rubber-derived particles. The results identify tire abrasion as a significant but understudied source of microplastic contamination in urban freshwater systems.
Recent developments in mass spectrometry for the characterization of micro- and nanoscale plastic debris in the environment
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This review examines advances in mass spectrometry techniques for characterizing micro- and nanoplastic debris in environmental samples, covering particle sizing, polymer identification, and quantification approaches. Improved mass spectrometry methods are expanding the ability to detect and characterize nanoplastics, which are particularly challenging to measure with conventional spectroscopic approaches.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.