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Related Concept Videos

Sampling Methods: Sample Types01:18

Sampling Methods: Sample Types

Sampling materials are classified into three main types: solid, liquid, and gas.
Solid samples include a variety of substances, such as sediments from water bodies, soil, metals, and biological tissues. Two standard methods for extracting sediments from water bodies are grab sampling and piston coring. Grab sampling involves using a device to collect a discrete sediment sample from the bottom of a water body with minimal disturbance. Grab samples do not always represent the entire area due to...
Microbial Wastewater Treatment01:30

Microbial Wastewater Treatment

Microbial communities in aquatic ecosystems play a key role in the natural breakdown of contaminants introduced through domestic and industrial effluents. Acting as biological catalysts, these microbes change and mineralize a wide range of organic and inorganic pollutants under different redox conditions.In oxygen-rich surface waters, aerobic heterotrophs lead organic matter breakdown, using oxygen as the terminal electron acceptor to efficiently oxidize substrates to carbon dioxide and water.
Bioplastics01:27

Bioplastics

Bioplastics derived from microbial processes present a sustainable alternative to conventional petroleum-based plastics. Among these, polyhydroxyalkanoates (PHAs), particularly polyhydroxybutyrates (PHBs), have emerged as prominent candidates due to their biodegradability and biocompatibility. These polymers are synthesized by a variety of bacteria, such as Cupriavidus necator and Pseudomonas putida, which naturally accumulate PHAs as intracellular carbon and energy reserves, especially under...
Microbial Bioremediation of Plastics01:28

Microbial Bioremediation of Plastics

Polyethylene terephthalate (PET) is a synthetic polymer widely utilized in the packaging industry, particularly for bottles and containers. Due to its chemical stability and durability, PET accumulates in the environment, contributing significantly to plastic pollution. It comprises repeating units of terephthalic acid and ethylene glycol, resulting in a semi-crystalline structure that is resistant to natural degradation processes.A notable breakthrough in plastic biodegradation came with the...

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Updated: Jul 8, 2026

Protocol for Microplastics Sampling on the Sea Surface and Sample Analysis
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Microplastics in solid waste streams: Research needs and gaps in research methodology.

Victoria C Hoffmann1, Olya S Keen1

  • 1University of North Carolina at Charlotte, Department of Civil and Environmental Engineering, United States.

Waste Management (New York, N.Y.)
|December 26, 2025
PubMed
Summary

Microplastic contamination in solid waste is understudied. This review highlights methodological inconsistencies in analyzing microplastics in landfill leachate, digestate, and compost, urging standardized methods for accurate environmental assessment.

Keywords:
Contaminants of emerging concernFood wasteGreen wasteRecycling facilities

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Area of Science:

  • Environmental Science
  • Analytical Chemistry
  • Waste Management

Background:

  • Microplastic contamination is a growing environmental concern, particularly in municipal waste streams.
  • Research has primarily focused on liquid waste (e.g., wastewater treatment plants), with less attention paid to solid waste systems.
  • Solid waste management processes like landfilling, anaerobic digestion, composting, and recycling are potential pathways for microplastic release.

Purpose of the Study:

  • To review and evaluate existing studies on microplastic concentrations in various solid waste streams.
  • To identify and analyze methodological inconsistencies and gaps in current research.
  • To propose foundational elements for standardized methodologies in microplastic analysis within solid waste.

Main Methods:

  • Systematic review of 46 peer-reviewed studies.
  • Analysis of microplastic concentrations reported in landfill leachate, digestate, compost, and recycling operations.
  • Identification of common methodological challenges and inconsistencies.

Main Results:

  • Microplastic concentrations in solid waste systems are sparsely explored.
  • Significant methodological inconsistencies were found, including omitted sample processing, poor reporting of detection limits, and inadequate contamination control.
  • These inconsistencies limit the reproducibility and synthesis of current research findings.

Conclusions:

  • Standardized methodologies and transparent reporting are crucial for accurate microplastic analysis in solid waste.
  • Addressing gaps in sampling design, analytical sensitivity, and contamination control is essential.
  • A unified approach is needed to advance the understanding of microplastic pollution in solid waste management.