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Thermal analysis techniques for microplastic mass quantification: Methodological challenges and standardization needs
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Scientists rely on lab techniques that heat up samples to measure how much plastic contamination (including in human tissue) is present, but this review of existing research finds these methods vary widely between labs, making it hard to trust or compare results. The researchers point out gaps—like a lack of standard testing materials and inconsistent procedures—and propose ways to make microplastic measurement more reliable, which matters because we can't fully understand health risks from something we can't consistently measure.
Microplastics (MPs, 1 μm-5 mm) and nanoplastics (NPs, <1 μm) are ubiquitous contaminants requiring standardized quantification methods. This systematic review evaluates thermal analysis techniques for mass-based MP detection, including pyrolysis-gas chromatography-mass spectrometry (Py-GC-MS), thermogravimetry-MS (TGA-MS), thermal extraction desorption-GC-MS (TED-GC-MS), and differential scanning calorimetry (DSC). Database searches (Web of Science, from inception to December 1, 2025) following PRISMA guidelines identified studies across seven environmental matrices (water, soil/sediment, atmosphere, biota, human tissues). We identify critical standardization gaps: inconsistent marker ion selection, unvalidated conversion factors for tire and road wear particles (TRWPs), and the absence of certified reference materials for complex matrices. Py-GC-MS demonstrates versatility but suffers from lipid interference in biological samples; TED-GC-MS offers superior sensitivity (sample capacity ∼200× Py-GC-MS) but lacks real-time chromatographic monitoring. To advance data comparability, we propose: (i) harmonized ion selection hierarchies based on specificity-sensitivity balance, (ii) matrix-specific TRWP quantification protocols, and (iii) inter-laboratory validation using environmental reference materials. This review provides a methodological roadmap for standardizing thermal analysis in MP research.
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The analytical challenge of measuring micro- and nanoplastics in human tissues
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Scientists keep finding tiny plastic particles in human tissue, but measuring them accurately is surprisingly hard, different labs use different methods and get different results. This paper explains why better, more standardized testing tools are urgently needed before we can truly understand how much plastic is in our bodies and what it might be doing to our health.
Emerging Analytical Methodologies for Micro- and Nano-Plastics Detection in Human Samples: Analytical Challenges and Health Risk Perspectives
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Scientists have found tiny plastic particles (microplastics and even smaller nanoplastics) throughout human organs and body fluids, but this review of existing research shows we still lack reliable, standardized tools to accurately measure them—different labs get different results depending on how they prepare and test samples. While lab studies suggest very small plastic particles can cause cell stress and inflammation, there isn't yet solid evidence directly linking plastic exposure to specific diseases in people—so the biggest takeaway is that we urgently need better testing methods before we can truly understand the health risks these particles pose.
Analytical challenges and advances in detecting microplastics in human tissue and organ samples.
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Scientists have found tiny plastic particles in human blood, lungs, and even placentas, but this review of 218 studies reveals a problem: the tools researchers use to detect microplastics aren't consistently reliable, and many studies skip basic quality checks that would confirm their results are accurate. This matters because until testing methods are standardized, it's hard to know exactly how much plastic is really in our bodies or what health risks it poses, the researchers call for stricter, more consistent lab practices to get trustworthy answers.
Analytical Methods for Microplastic Detection in Hepatic and Gastrointestinal Human Tissues: A Review and Methodological Framework
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Scientists have found tiny plastic particles (microplastics) in human liver and gut tissue, but this review shows that different labs use very different methods to detect them, making it hard to compare results or know how much plastic is really in our bodies. The researchers didn't discover new health risks, instead, they're calling for standardized testing methods so future studies can give us clearer, more reliable answers about how microplastics affect our health.
Microplastics and nanoplastics: Exposure and toxicological effects require important analysis considerations
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This review highlights that while microplastics and nanoplastics have been found in human tissues and linked to several diseases, the actual toxic effects are still unclear because researchers use very different methods to study them. The authors call for standardized testing approaches so that results can be compared reliably, which is critical for determining what levels of exposure actually pose a risk to human health.
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