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Development of a fully automated slurry sampling introduction system for GF-AAS and its application for the determination of cadmium in different matrices
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A fully automated slurry sampling system was developed for graphite furnace atomic absorption spectrometry, enabling efficient cadmium determination in complex matrices including microplastic and nanoparticle samples with fewer errors than manual methods.
The autosampler extension helps solve key problems in trace element analysis of solid samples, making the process faster and more accurate. It works well with complex materials, making it useful for areas like microplastic or nanoparticle analysis. This improvement also helps meet regulations for monitoring environmental and polymer samples, offering a reliable and flexible tool for high-throughput analysis with fewer errors.
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Researchers developed an in-situ preconcentration method using electrolyte atmospheric liquid discharge spectroscopy to detect trace cadmium on microplastic surfaces, enabling sensitive analysis of how microplastics accumulate heavy metal contaminants.
Automatic Sample Preparation Device proposed as one of homoginized methods to collect natural microplastics in environmental waters
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Researchers proposed an automatic sample preparation device designed to standardize and homogenize the collection of natural microplastics from environmental water samples, addressing the operator-dependent variability inherent in current manual digestion and density separation methods used ahead of spectroscopic analysis.
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This study used an automated sample preparation device combined with pyrolysis gas chromatography/mass spectrometry (pyrolysis-GC/MS) to analyze microplastics in river water, streamlining what is typically a labor-intensive process. Automating microplastic analysis is important for increasing the volume and consistency of environmental monitoring data needed to track pollution trends and inform policy.
Microplastic analysis in river samples using automatic preparation device and pyrolysis-GC/MS
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A potential threat from biodegradable microplastics: mechanism of cadmium adsorption and desorption in the simulated gastrointestinal environment
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Laboratory experiments found that biodegradable polylactic acid (PLA) microplastics adsorb significant amounts of cadmium, and simulated gastrointestinal digestion dramatically increased cadmium bioaccessibility — 19% released in the gastric phase and 62% in the intestinal phase — far exceeding conventional PP and PA microplastics. This indicates that biodegradable plastics marketed as environmentally safer alternatives may pose heightened risks as heavy metal vectors in the human gut, challenging assumptions about their safety.
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