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A physical chemistry lens on environmental nanoplastics analysis challenges. Part II: detection techniques – principles, limitations and future directions
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A physical chemistry perspective examined the analytical challenges of measuring environmental nanoplastics, arguing that standard methods often miss or mischaracterize the smallest particles. The paper calls for improved analytical frameworks to better understand nanoplastic behavior and biological risks.
From spectroscopy to mass spectrometry, this review dissects how current techniques detect nanoplastics—and why none alone is enough—proposing practical multimodal workflows and a roadmap for future standardisation.
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This review examines the analytical challenges of detecting and characterising nanoplastics in environmental samples, presenting the state of the art in size determination, chemical composition analysis, and quantification techniques, as well as a survey of nanoplastic model materials used in the literature.
Advancements in environmental nanoplastics research
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This review synthesises advances in environmental nanoplastics research, discussing distinctions between nanoplastics and microplastics in physicochemical properties, limitations in current analytical methods for environmental samples, and gaps between laboratory exposure studies and real-world concentrations. The authors highlight emerging evidence of nanoplastics in human organs and excretions and argue that methodological breakthroughs will usher in a 'nano era' of plastic pollution research.
Nanoplastics: From Separations to Analysis—Challenges and Limitations
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This review examines the challenges of analyzing nanoplastics in environmental samples, from sample preparation to identification. Researchers found that techniques commonly used for larger microplastics are often ineffective for nanoplastics, and that isolating these tiny particles from complex environmental samples remains a major technical hurdle. The study summarizes the advantages and limitations of current microscopic, spectroscopic, and thermal analysis methods and calls for standardized approaches.
New Analytical Approaches for Effective Quantification and Identification of Nanoplastics in Environmental Samples
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This review assessed new analytical approaches for quantifying and identifying nanoplastics in environmental samples, highlighting fundamental challenges in detection due to their small size and the need for improved methods to understand nanoplastic contamination levels.
Physicochemical characterization and quantification of nanoplastics: applicability, limitations and complementarity of batch and fractionation methods
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Researchers evaluated a suite of techniques for measuring the size, shape, and chemical makeup of nanoplastics — plastic particles smaller than 1 micrometer — and found that no single method works for all sample types, especially when particles vary in size or clump together. Combining multiple complementary techniques is essential for reliable nanoplastic characterization, particularly in complex environmental or biological samples.
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