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20 resultsShowing papers similar to Analysis of microplastics in soil samples by using a thermal decomposition method
ClearMicroplastics in soils: A comparative review on extraction, identification and quantification methods
This review compares the various methods scientists use to extract, identify, and measure microplastics in soil, highlighting the strengths and weaknesses of each approach. Soil is a particularly challenging material to work with because its organic matter and complex structure can interfere with accurate microplastic detection. The authors recommend combining multiple techniques and minimizing harsh chemical steps that could accidentally destroy the very plastic particles being measured.
Improving analytical methods for the extraction and analysis of biodegradable and non-biodegradable microplastics in the soil environment.
Researchers worked to improve analytical extraction and detection methods for both biodegradable and conventional microplastics in soil environments, addressing a critical methodological gap given that terrestrial soils are major sinks for microplastic pollution entering through agricultural and waste management pathways.
Identifying an accurate and efficient approach to soil organic matter removal for quantifying microplastics in agricultural soils
Researchers evaluated multiple soil organic matter removal strategies for microplastic extraction from agricultural soils, comparing their efficiency in decomposing organic interference while preserving microplastic integrity. The study identifies an optimal approach that balances thorough SOM removal with minimal microplastic degradation, supporting more accurate quantification in contaminated agricultural samples.
Fast identification of microplastics in complex environmental samples by a thermal degradation method
Researchers developed a fast identification method for microplastics in complex environmental samples using thermal analysis, offering a high-throughput alternative to spectroscopic techniques for polymer identification.
Finding Microplastics in Soils: A Review of Analytical Methods
This review critically evaluates published methods for finding microplastics in soil — including density separation, chemical digestion, and spectroscopic identification — and proposes a standardized analytical framework suitable for the complex soil matrix.
Extraction and Identification of a Wide Range of Microplastic Polymers in Soil and Compost
Researchers compared and optimized two microplastic extraction methods for soil and compost, finding that density separation combined with chemical digestion was effective across a wide range of polymer types, providing a more reliable protocol for terrestrial microplastic analysis.
An efficient, cost-effective, and environmentally friendly protocol for extracting microplastics from soil samples
Researchers developed an efficient, cost-effective, and environmentally friendly protocol for extracting microplastics from soil samples, addressing the lack of standardized methods and evaluating extraction performance across different soil matrices.
Microplastic analysis in soils: A comparative assessment
Researchers compared six different analytical methods for detecting and measuring microplastics in soil, testing them across different soil types and plastic materials. Fluorescence microscopy achieved the highest recovery rates for larger particles, while mass-based techniques like pyrolysis gas chromatography were better suited for detecting very small microplastics. The study highlights that no single method works best for all situations, and combining techniques may be necessary for accurate microplastic assessment in soil.
Advances in the analysis of relevant microplastic types in agricultural soils
Researchers developed and validated an improved soil purification protocol for extracting microplastics from agricultural soils, based on systematic testing across different soil types to efficiently isolate plastic particles for polymer identification. The method built on prior work by Moller et al. (2022) and addressed the challenge that soil remains one of the most difficult matrices for microplastic analysis.
An effective method for the rapid detection of microplastics in soil
A rapid and practical method was developed for detecting and identifying microplastics in soil, addressing the need for faster alternatives to existing time-consuming techniques. The method uses a combination of sieving and staining approaches to accelerate microplastic extraction and identification from soil samples.
Introducing a soil universal model method (SUMM) and its application for qualitative and quantitative determination of poly(ethylene), poly(styrene), poly(vinyl chloride) and poly(ethylene terephthalate) microplastics in a model soil
A thermogravimetry-based method was evaluated for identifying and measuring four types of microplastics (polyethylene, polystyrene, PVC, and PET) mixed in soil samples. The method showed promising results as a faster alternative to traditional microscopy-based approaches for soil microplastic analysis.
Tackling the Challenge of Extracting Microplastics from Soils: A Protocol to Purify Soil Samples for Spectroscopic Analysis
Researchers developed a new laboratory method for extracting microplastics from soil samples so they can be identified using infrared spectroscopy. The protocol combines freeze-drying, sieving, density separation, and enzymatic digestion to remove more than 99.9% of mineral material and 77% of organic matter. Testing confirmed the method preserves common plastic types like polyethylene and polyamide, though biodegradable polylactic acid showed some degradation during processing.
Advances in the analysis of relevant microplastic types in agricultural soils
Researchers developed an optimized soil purification protocol for extracting and identifying microplastic particles from agricultural soils, systematically testing and combining multiple extraction and purification steps to improve the accuracy of polymer identification across different soil types.
Microplastics in complex soil matrix: Recovery, identification and removal using micro nano techniques
Researchers reviewed current methods for finding and removing microplastics from complex soil samples, noting that no single technique works well for all particle types, and proposed a step-by-step approach combining density separation, chemical purification, and photocatalytic degradation to better detect and eliminate soil microplastics.
Quantification of Microplastics in Soils Using Accelerated Solvent Extraction: Comparison with a Visual Sorting Method
Researchers evaluated accelerated solvent extraction as an alternative to visual sorting for quantifying microplastics in soil, finding it recovered similar total amounts but with some differences by polymer type. Improving the accuracy and efficiency of soil microplastic measurement is essential for understanding agricultural and terrestrial plastic contamination.
Quantitative Analysis of Poly(ethylene terephthalate) Microplastics in Soil via Thermogravimetry–Mass Spectrometry
Researchers developed a thermogravimetry-mass spectrometry method to quantitatively measure polyethylene terephthalate (PET) microplastics in soil, achieving detection limits suitable for environmentally relevant concentrations. The method addresses a key analytical challenge in soil microplastic research where conventional optical methods struggle with complex soil matrices.
A Method for the Extraction and Analysis of Microplastics from Tropical Agricultural Soils in Southeastern Brazil
Researchers developed and validated a method for extracting and analyzing microplastics from tropical agricultural soils, adapting density separation and filtration protocols to account for the high organic matter and clay content typical of tropical soil matrices.
Optimized microplastic analysis based on size fractionation, density separation and μ-FTIR
Researchers optimized a multi-step method for extracting and identifying microplastics from soil and sediment, combining grain size separation, density flotation, and infrared microscopy. The validated method achieved high recovery rates for eight common plastic polymers, contributing to more reliable monitoring of soil microplastic contamination.
Systematic development of extraction methods for quantitative microplastics analysis in soils using metal-doped plastics
Researchers developed and optimized systematic extraction methods for quantitative microplastic analysis in diverse soil types, using metal-doped PET microplastics as reference materials to validate extraction workflows and improve consistency across different soil matrices.
Microplastic Analysis in Soil Using Ultra-High-Resolution UV–Vis–NIR Spectroscopy and Chemometric Modeling
Researchers tested a new method using UV-visible-near infrared spectroscopy combined with machine learning to identify microplastics in soil samples. They found the technique could rapidly and accurately distinguish between different plastic polymers and natural soil particles. The study offers a promising alternative to current labor-intensive identification methods, potentially making large-scale microplastic soil monitoring more practical.