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Photoinduced Force Microscopy as an Efficient Method Towards the Detection of Nanoplastics
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Researchers used photoinduced force microscopy — a technique that overcomes the diffraction limit of conventional infrared spectroscopy — to detect and chemically characterize nanoplastic particles. The method revealed surface oxidation and chemical changes on polystyrene nanoplastics in salt water, demonstrating it can identify degraded nanoplastics that are too small for conventional IR detection.
Abstract Invited for this month's cover is the group of Bert M. Weckhuysen and Florian Meirer at Utrecht University (The Netherlands). The cover picture shows polystyrene nanoplastics and how they are detected with photo‐induced force microscopy. This method overcomes the diffraction limit of infrared light by employing a nano‐sized tip as detector. Oxidative degradation and chain scission occurred on the surface of the polystyrene nanoplastics in salt water, as depicted by the carbonyl and aliphatic functionalities. Detecting nano‐sized plastic particles is essential for understanding how plastic waste breaks down into smaller particles in the environment. Read the full text of their Communication at 10.1002/cmtd.202100017 .
More Papers Like This
Photoinduced Force Microscopy as an Efficient Method Towards the Detection of Nanoplastics
AI summary Read the abstract
Researchers demonstrated photoinduced force microscopy as an effective method for detecting and chemically characterizing individual nanoplastic particles, overcoming limitations of conventional techniques that lack either sufficient spatial resolution or spectroscopic capability at the nanoscale.
Cover Picture: Photoinduced Force Microscopy as an Efficient Method Towards the Detection of Nanoplastics (Chemistry ‐ Methods 5/2021)
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This is a cover picture description for a study on using photoinduced force microscopy to detect nanoplastics, showing polystyrene nanoplastics and how the technique uses a nano-scale tip as a detector to overcome the diffraction limit of infrared light. It is a journal cover note rather than a full article.
Identification of microplastics and nanoplastics in environmental water by AFM-IR
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Scientists used a new technique called AFM-IR, which combines atomic force microscopy with infrared spectroscopy, to identify individual nanoplastic particles in environmental water for the first time. This method can detect particles as small as 100 nanometers, far beyond the limits of traditional microscopy. They found several types of nanoplastics in a water sample, including an epoxy and a biodegradable plastic, demonstrating that this tool could improve our ability to track nanoplastic pollution.
Picogram-Level Nanoplastic Analysis with Nanoelectromechanical System Fourier Transform Infrared Spectroscopy: NEMS-FTIR
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Researchers developed a NEMS-FTIR approach combining nanoelectromechanical systems with Fourier transform infrared spectroscopy for chemical characterization and quantification of nanoplastics, achieving picogram-level detection limits ranging from 101 to 353 pg for polypropylene, polystyrene, and polyvinyl chloride nanoplastics with diameters from 54 to 262 nm.
Analysing micro- and nanoplastics with cutting-edge infrared spectroscopy techniques: a critical review
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This review evaluates cutting-edge infrared spectroscopy techniques for detecting and analyzing micro- and nanoplastics in environmental and food samples. Better detection methods are crucial for understanding human exposure because they allow scientists to measure smaller particles more accurately, including nanoplastics that are small enough to cross biological barriers and accumulate in human tissues.
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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.