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Correction to: Quantitative analysis of PET microplastics in environmental model samples using quantitative 1H-NMR spectroscopy: validation of an optimized and consistent sample clean-up method
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This is a published correction to a prior methodology paper on quantifying PET microplastics in environmental samples using nuclear magnetic resonance spectroscopy. No new findings are presented.
The original version of this article contained a mistake.
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Quantitative analysis of PET microplastics in environmental model samples using quantitative 1H-NMR spectroscopy: validation of an optimized and consistent sample clean-up method
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Researchers proposed a new mass-based method for quantifying PET microplastics in environmental samples that enables comparisons across different sample matrices. Standardizing how microplastics are measured — particularly reporting mass rather than just particle counts — would improve the comparability of data from different studies.
High-resolution NMR spectroscopic approaches to quantify PET microplastics pollution in environmental freshwater samples
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Researchers developed a workflow using high-resolution nuclear magnetic resonance spectroscopy to detect and quantify polyethylene terephthalate microplastic contamination in environmental water samples. The NMR-based approach enables unambiguous identification and precise measurement of PET particles in surface waters. The study offers a promising new analytical tool for monitoring microplastic pollution that complements existing detection methods.
NMR-Based Quantification of Microplastics and Their Degradation Products in Environmental Water Samples
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Researchers tested a chemical method called qNMR to measure plastic pollution dissolved in water samples from five sites near a polluted islet, before and after a major cleanup. The method found much higher plastic amounts than a standard particle-counting technique, though both methods showed similar patterns across locations, with polyethylene making up most of the plastic detected.
Correction to: No prominent toxicity of polyethylene microplastics observed in neonatal mice following intratracheal instillation to dams during gestational and neonatal period
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This is a published correction to an earlier study that found no significant toxicity from polyethylene microplastics in newborn mice exposed through their mothers. The correction addresses a methodological detail in the original paper. The underlying finding — that intratracheal exposure to polyethylene microplastics during pregnancy and nursing caused no prominent toxicity — remains unchanged.
Feasibility of using quantitative 1H-NMR spectroscopy and ultra-microbalances for investigation of a PET microplastic reference material
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Researchers validated quantitative NMR spectroscopy and ultra-microbalances as complementary tools for measuring PET microplastic mass in reference materials, finding both methods produced consistent results within standard deviations — supporting their use in large-scale inter-laboratory comparisons.
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