We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Soil Microplastic Extraction Efficiency Depends on the Sample Incubation Time and the Organic Matter Removal Agent Used
AI summary Read the abstract
Laboratory experiments compared microplastic extraction efficiency across soils with different organic matter contents using H2O2 and KOH digestion agents, finding that longer incubation times significantly reduced recovery rates in high-organic-matter soils. Standardizing extraction protocols is essential for accurate environmental monitoring of microplastics, since inconsistent methods can cause researchers to underestimate true contamination levels in agricultural and natural soils.
Environmental pollution by microplastics is now a global problem, as global plastic production is increasing and at the same time recycling of plastic waste is low. In recent years, a number of methods have been developed to determine the content of microplastics in soil. This study compares the efficiency of microplastic extraction in two-week and three-month incubation samples from three different soils artificially contaminated with different types of microplastics. H2O2 and KOH were used as agents to remove organic matter. The effects of changing the incubation time were significant in soils with a high organic matter content. A longer incubation time resulted in a lower efficiency of microplastic extraction. Compared to the results obtained with the control method after a two-week incubation, the loose sand samples achieved a similar extraction efficiency (86%), the amount of MP recovered in the uncontaminated sandy clay samples was 75%, while the sandy clay soils contaminated with heavy metals was 44%. The samples without organic matter removal showed a significantly better recovery rate of microplastics than the samples treated with H2O2 and KOH.
More Papers Like This
Methods of soil sampling for microplastic analysis: a review
AI summary Read the abstract
This review evaluates methods for soil microplastic sampling, finding that random sampling designs, stainless steel tools, and topsoil collection to 30 cm depth are most appropriate, while micro-FTIR analysis can work with samples as small as 15 g per point. Standardizing soil sampling protocols is a prerequisite for generating reliable data on microplastic contamination levels in agricultural and natural soils where human food is grown.
Recent Developments in Extraction, Identification, and Quantification of Microplastics from Agricultural Soil and Groundwater
AI summary Read the abstract
Researchers reviewed recent advances in extracting, identifying, and quantifying microplastics from agricultural soil and groundwater, highlighting methodological gaps and the urgent need for standardized protocols to accurately assess contamination levels in these critical food-producing environments.
Microplastics in soil: a review on research status, sources, methods, and remediation strategies
AI summary Read the abstract
A comprehensive literature review found that soil microplastic research lags far behind aquatic studies despite annual MP discharge into farmland exceeding marine inputs, with synthetic textiles, tire wear, and urban dust as dominant sources entering soil via atmospheric deposition, sewage irrigation, and agricultural film use. The soil MP burden threatens food crop health, risks leaching into groundwater, and poses intergenerational health risks through nutrient disruption and potential plant-to-human transmission pathways.
Microplastics in Soils and Sediment: Sources, Methodologies, and Interactions with Microorganisms
AI summary Read the abstract
Microplastics in soils and sediments interact with microorganisms in complex ways, affecting microbial community structure and facilitating the spread of antibiotic resistance genes. These interactions highlight that microplastic pollution poses ecological risks beyond physical contamination, potentially disrupting soil health and agricultural systems.
Microplastics in Soils and Sediment: Sources, Methodologies, and Interactions with Microorganisms
AI summary Read the abstract
Researchers reviewed the sources, measurement methods, and ecological interactions of microplastics in soils and sediments, highlighting that terrestrial plastic pollution is substantial and poorly understood, and that microplastics in soil can affect microbial communities in ways that may ripple through food webs and nutrient cycles.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.