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Papers
20 resultsShowing papers similar to Localisation and identification of polystyrene particles in tissue sections using Raman spectroscopic imaging
ClearAdvancements in optical techniques for direct identification and localization of micro- and nanoplastics in biological samples
Researchers reviewed advanced optical methods for directly detecting and localizing microplastics in biological tissues, highlighting techniques that can identify particles without extraction or digestion. Optical approaches including Raman mapping and coherent anti-Stokes Raman scattering allow spatial mapping of microplastics in tissue sections.
How to Identify and Quantify Microplastics and Nanoplastics Using Raman Imaging?
This paper reviews advances in Raman imaging as a method for identifying and quantifying microplastics and nanoplastics in environmental samples, discussing current protocols, analytical challenges, and the need for standardization.
Raman Imaging Spectroscopy: History, Fundamentals and Current Scenario of the Technique
This review covers the history and principles of Raman imaging spectroscopy, a technique increasingly used to identify and map the chemical composition of microplastics in environmental samples. The review provides technical context for one of the most important tools in microplastic analysis.
Correlative spectroscopy and microscopy analysis of micro- and nanoplastics in complex biological matrices
Researchers combined fluorescence microscopy, second harmonic generation imaging, and coherent Raman scattering to detect and map micro- and nanoplastics in lung cells, zebrafish, and mouse tissues. Polystyrene nanoplastics were found to cross the blood-brain barrier and accumulate in lipid-rich brain regions in animal models.
Microplastic identification using Raman microsocpy
Researchers developed and implemented a Raman spectroscopy system for rapid detection and identification of microplastic particles on substrates. The system enables efficient chemical characterization of microplastics found across diverse environmental matrices including ocean, lakes, soil, beach sediment, and human blood.
Correlative spectroscopy and microscopy analysis of micro- and nanoplastics in complex biological matrices
Researchers combined fluorescence, second harmonic generation, and coherent Raman scattering microscopy in a single instrument to image micro- and nanoplastics in lung cells, zebrafish, and mouse tissues. Polystyrene nanoplastics crossed the blood-brain barrier and accumulated in lipid-rich brain regions in mouse models.
Identification and detection of label-free polystyrene microplastics in maize seedlings by Raman spectroscopy
Researchers developed a label-free method to detect and identify polystyrene microplastics in maize seedling tissues using spectroscopic techniques, confirming that plant roots can take up plastic particles from contaminated soil. The approach enables tracking microplastic uptake pathways in crops without chemical labeling.
Advancements in optical techniques for direct identification and localization of micro- and nanoplastics in biological samples
This review surveyed advances in optical techniques for detecting and localizing microplastics directly in biological tissue samples, addressing the challenge that human tissue detection has not kept pace with detection in environmental matrices. Emerging methods including Raman microspectroscopy and CARS microscopy were identified as most promising for tissue-level microplastic identification.
Raman spectroscopy: Recent advances in fast and reliable microplastic analysis
This review covered recent advances in Raman spectroscopy for fast and reliable microplastic analysis, with emphasis on its ability to characterize small particles that can penetrate living tissues. The authors highlight improvements in speed and sensitivity that are making Raman techniques more practical for environmental monitoring.
Raman spectroscopy: Recent advances in fast and reliable microplastic analysis
This review summarized recent advances in Raman spectroscopy for fast and reliable microplastic identification, covering improvements in speed, sensitivity, and automation that are making the technique more practical for routine environmental monitoring. Raman-based methods are increasingly able to identify microplastics in complex environmental matrices including biological tissues.
Label-free detection of polystyrene nanoparticles in Daphnia magna using Raman confocal mapping
Researchers demonstrated that Raman confocal mapping can detect polystyrene nanoparticles inside Daphnia magna without labels or dyes, revealing particle accumulation in the gut and providing a non-invasive method for studying nanoplastic uptake in organisms.
Identification and visualisation of microplastics/nanoplastics by Raman imaging (i): Down to 100 nm
Researchers developed an advanced Raman imaging technique capable of identifying and visualizing nanoplastics down to 100 nanometers in size. The study addressed a key analytical gap, as nanoplastic research has been limited by the lack of effective characterization methods, and the new approach offers a way to detect these extremely small particles that may pose greater environmental risks due to their high surface area.
Direct Nanoplastics Detection Below the Diffraction Limit Using Micro Raman
Researchers demonstrated that micro-Raman spectroscopy can directly detect polystyrene nanoplastic particles as small as 20 nm — far below the normal diffraction limit. This advances analytical capabilities for detecting the smallest nanoplastic particles in environmental samples.
Raman Spectroscopic Detection of Silicone Leakage in Human Breast and Lymph Node Tissues
This paper is not relevant to microplastics; it uses Raman spectroscopy to detect silicone leakage from ruptured breast implants in human tissue samples.
Label-free stimulated Raman scattering imaging of intracellular microplastics in mammalian cells
Researchers used label-free stimulated Raman scattering imaging to visualize microplastic uptake and distribution inside mammalian cells without fluorescent labels, finding that intracellular microplastics were associated with elevated reactive oxygen species, reduced cell viability, and altered lipid metabolism.
Identification of Microplastics Using a Custom Built Micro-Raman Spectrometer
Researchers built a custom micro-Raman spectrometer and demonstrated its use for identifying microplastic polymer types in environmental samples, achieving sensitive and specific polymer identification at particle sizes down to a few micrometers.
Identification of microplastics using Raman spectroscopy: Latest developments and future prospects
This review summarizes the latest advances in using Raman spectroscopy to identify microplastics in environmental samples, highlighting improvements in speed, sensitivity, and the ability to characterize plastic type and surface chemistry.
Fast microplastics identification with stimulated Raman scattering microscopy
Stimulated Raman scattering microscopy was applied to rapidly identify and image microplastic particles in complex environmental samples at speeds dramatically faster than conventional Raman spectroscopy. The technique has potential to enable high-throughput microplastic analysis that could make large-scale environmental monitoring more feasible.
Unveiling microplastics with hyperspectral Raman imaging: From macroscale observations to real-world applications
This study demonstrated that hyperspectral Raman imaging can identify and characterize microplastics across scales from macro observations to individual particles in real environmental samples, offering advantages over single-point Raman measurements for heterogeneous samples.
Raman microspectroscopy and laser-induced breakdown spectroscopy for the analysis of polyethylene microplastics in human soft tissues
Researchers developed a combined technique using Raman microspectroscopy and laser-based analysis to detect polyethylene microplastics in human soft tissue samples. The method can identify both the plastic polymer and any associated inorganic elements in tissue. This kind of detection tool is important for understanding whether microplastics accumulate in specific human organs and what health effects they might have.