New Laser Imaging Tracks Microplastics in Living Tissue

🔑 Enhanced Key Takeaways

• •The imaging technique utilizes a method known as stimulated Raman scattering (SRS) microscopy, which detects the specific vibrational signatures of plastic polymers.
• •Researchers successfully tracked polystyrene microplastics as small as 200 nanometers, demonstrating high sensitivity to sub-micron particles.
• •The study revealed that microplastics can cross biological barriers, including the blood-brain barrier, which was previously difficult to visualize in vivo.
• •This imaging modality eliminates the need for fluorescent labeling, which often alters the physical properties or surface chemistry of the microplastics being studied.
• •The research team identified that particle size and surface charge significantly influence the rate and location of microplastic accumulation in organs like the liver and spleen.

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