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20 resultsShowing papers similar to Quantitative methodology for poly (butylene adipate-co-terephthalate) (PBAT) microplastic detection in soil and compost
ClearQuantitative methodology for poly (butylene adipate-co-terephthalate) (PBAT) microplastic detection in soil and compost
Researchers developed a quantitative methodology for detecting poly(butylene adipate-co-terephthalate) (PBAT) microplastics in soil and compost matrices, addressing the need to monitor biodegradable mulch film fragmentation and mineralization in agricultural environments. The method enabled accurate measurement of PBAT microplastic concentrations across environmentally relevant matrices, providing a tool to assess the fate of biodegradable plastics in agroecosystems.
Quantitative analysis of PBAT microplastics and their degradation products in soil by mass spectrometry
Scientists developed a new method to measure the breakdown of biodegradable PBAT plastic microplastics in soil and tracked their degradation over 150 days across three different soil types. They found that 11-17% of the plastic degraded during that time, with alkaline soils breaking it down fastest due to higher enzyme activity. The study also detected accumulating degradation by-products in the soil, raising questions about whether so-called biodegradable plastics truly disappear or simply transform into other chemicals.
Poly (butylene adipate terephthalate) degradation products and their influence on plant progression and soil microbial diversity
This study examined how the biodegradable plastic PBAT degrades in soil and what effects its degradation products have on Chinese cabbage growth and soil microbial diversity, finding that degradation varied with particle size and that soil microbiomes shifted as PBAT broke down. The findings matter for assessing whether "biodegradable" mulch films truly disappear benignly or leave behind microplastic fragments and microbial disruption in agricultural soils.
A Simple Method for Quantification of Polyhydroxybutyrate and Polylactic Acid Micro-Bioplastics in Soils by Evolved Gas Analysis
Researchers developed a simple thermogravimetry-mass spectrometry method for quantifying poly-3-hydroxybutyrate (PHB) and polylactic acid (PLA) micro-bioplastics in soils by measuring specific low-molecular-weight gases evolved during pyrolysis, finding that constant ratios of characteristic pyrolysis products enabled reliable detection above the limit of quantification despite varying soil organic carbon content.
Negative effects of poly (butylene adipate-co-terephthalate) microplastics on Arabidopsis and its root-associated microbiome
Researchers investigated the effects of poly(butylene adipate-co-terephthalate) (PBAT) biodegradable microplastics on Arabidopsis thaliana and its root-associated microbiome, finding that PBAT-MPs at tested concentrations in agricultural soil caused negative impacts on plant growth and altered the composition of root-zone microbial communities.
The fate of post-use biodegradable PBAT-based mulch films buried in agricultural soil
Scientists tracked the breakdown of a biodegradable mulch film in farm soil over 16 months and found that while the film lost more than half its surface area, it released microplastics into the surrounding soil during the process. About 17-23% of the original film material was still recoverable from the soil after nearly 500 days. The study shows that even biodegradable plastics can be a source of microplastic contamination in agricultural soils.
A promising approach to monitor microplastic masses in composts
Thermal analysis methods (thermogravimetry and pyrolysis-GC/MS) were evaluated as approaches for monitoring microplastic mass concentrations in composts, finding promising results for detecting MPs below the 1 mm threshold currently regulated under EU and German law.
Characterization of poly (butylene adipate-co-terephthalate) PBAT co- polyesters degrading bacteria from farmland soil of Xinjiang
Researchers isolated and characterized bacteria from farmland soil capable of degrading PBAT, a biodegradable plastic used as mulch film. Identifying microbes that can break down agricultural plastics offers a biological approach to reducing long-term microplastic accumulation in soils that grow food.
Degradation of biodegradable plastic films in soil: microplastics formation and soil microbial community dynamics
Scientists tracked what happens when biodegradable PBAT plastic films break down in soil over 180 days and found they release microplastics that peaked before declining. Fungi broke the films into smaller pieces while bacteria consumed the fragments, suggesting that even plastics marketed as biodegradable generate microplastics during their breakdown, though soil microbes can eventually help clean them up.
Exploration of Source-SpecificMarkers for SecondaryMicroplastics Derived from Polyolefin-Coated Fertilizers
Researchers developed a source-attribution framework for identifying polyolefin-coated fertilizer-derived microplastics in agricultural soil, using characteristic fatty acids and levoglucosan as chemical markers detectable via thermal desorption GC-MS. The framework correctly identified 14 of 15 environmental microplastic samples as fertilizer-derived, demonstrating a practical method for tracking agricultural microplastic origins.
Determination of microplastics in agricultural soil by double‐shot pyrolysis‐gas chromatography combined with two‐step extraction
Researchers developed a pyrolysis-gas chromatography method combining two-step solvent extraction to simultaneously measure five common microplastic polymer types (PC, PS, PP, PE, PET) in agricultural soil samples with good sensitivity and linearity. A reliable, validated method for quantifying microplastics in soil is essential for understanding how agricultural practices and plastic mulch use contribute to soil contamination and potential human dietary exposure.
Dosages of Biodegradable Poly(butylene adipate-co-terephthalate) Microplastics Affect Soil Microbial Community, Function, and Metabolome in Plant–Soil System
Researchers examined how different concentrations of biodegradable PBAT microplastics affect soil microbial communities and lettuce growth. They found that while low concentrations had minimal impact, higher doses significantly altered soil microbial diversity, metabolic functions, and the chemical profile of the soil. The findings suggest that even biodegradable plastic mulch residues can disrupt soil ecosystems when they accumulate at higher levels.
A practical method for mass quantification of microplastics in soil media using pyrolysis gas chromatography-mass spectrometry
Researchers developed and validated a pyrolysis gas chromatography-mass spectrometry (Py-GC/MS) method for quantifying polyethylene, polypropylene, and polystyrene microplastics in soil, achieving low detection limits (0.02-0.44 microgram), strong linearity, and recovery rates of 86-100% across three soil types. Cryomilling improved homogeneity and accuracy by 3.2%, and FTIR confirmed polymer identities with over 85% spectral match.
Soil C-N and microbial community were altered by polybutylene adipate terephthalate microplastics
Researchers investigated how biodegradable polybutylene adipate terephthalate (PBAT) microplastics affect soil carbon, nitrogen, and microbial communities in soils planted with soybean and maize. The study found that PBAT microplastics significantly altered dissolved organic carbon and nitrogen levels, increased microbial biomass, and shifted bacterial and fungal community composition, suggesting that even biodegradable microplastics may disrupt soil nutrient cycling in plant-specific ways.
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.
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.
A critical review of the overlooked challenge of determining micro-bioplastics in soil
This review addresses the overlooked challenge of detecting and measuring micro-bioplastics, which are microplastic fragments derived from biodegradable plastics like polylactic acid and polyhydroxybutyrate. Researchers found that because biodegradable plastics rarely encounter the specific conditions needed for complete decomposition in natural environments, they may paradoxically generate microplastics even faster than conventional plastics. The study concludes that new analytical methods, particularly thermoanalytical approaches, are urgently needed to assess the environmental fate and toxicity of these increasingly common materials.
Polyethylene and poly (butyleneadipate-co-terephthalate)-based biodegradable microplastics modulate the bioavailability and speciation of Cd and As in soil: Insights into transformation mechanisms
Biodegradable PBAT and conventional polyethylene microplastics added to soil were both found to alter soil physicochemical properties and change the speciation and bioavailability of heavy metals including lead and cadmium. The study highlights that both conventional and so-called biodegradable microplastics can exacerbate heavy metal risks in contaminated agricultural soils.
Pyr-GC-MS analysis of microplastics extracted from farmland soils
This study used pyrolysis-GC-MS to identify and quantify microplastics in farmland soils, finding multiple polymer types in agricultural fields. The work helps establish analytical methods for studying this growing but less-studied pathway of microplastic contamination.
Chromatografische Verfahren zur Charakterisierung von Mikroplastik im Boden
This study reviewed chromatographic methods for characterizing microplastics in soil, assessing their suitability for identifying and quantifying the diverse polymer types accumulating in terrestrial environments due to decades of widespread plastic use.