Papers

61,005 results
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Article Tier 2

Tackling plastic pollution together: Examples of international collaboration for the monitoring and reporting of microlitter (including microplastics).

Researchers described international laboratory networks established through the UK's Commonwealth Litter Programme (CLiP) and Ocean Country Partnership Programme (OCPP) to build scientific capacity for microplastic and marine litter monitoring in Global South countries. The study presents examples of cross-border collaboration that provided infrastructure, training, and standardised methodologies to enable partner nations to produce reproducible and comparable data on plastic pollution entering the oceans.

2024 Zenodo (CERN European Organization for Nuclear Research)
Article Tier 2

Creation of an international laboratory network towards global microplastics monitoring harmonisation

International programs established a network of microplastics research laboratories across Global South countries, providing standardized equipment, training, and protocols. This effort aims to build local scientific capacity and ensure that microplastic monitoring data from different regions can be meaningfully compared, which is essential for understanding the true global scale of plastic pollution.

2024 Scientific Reports 24 citations
Article Tier 2

A field and laboratory manual for sampling, processing and reporting microplastics in coastal and marine environments

This paper presents a comprehensive, standardized field and laboratory guideline for sampling, processing, and reporting microplastics in coastal and marine environments, developed through international collaboration. The harmonized protocols aim to improve comparability of data across global monitoring programmes.

2025 Frontiers in Marine Science 4 citations
Article Tier 2

Joint effort among research infrastructures to quantify the impact of plastic debris in the ocean

This collaborative overview coordinated monitoring of marine plastic debris across multiple research infrastructures, finding widespread and persistent contamination and calling for harmonized international observation protocols.

2019 Environmental Research Letters 38 citations
Article Tier 2

Standardised protocol for monitoring microplastics in sediments. Deliverable 4.2.

This paper presents a standardized protocol for monitoring microplastics in marine sediments, developed as part of an international project to harmonize sampling and analysis methods across different research groups. Having consistent protocols is essential for generating comparable data to track plastic pollution trends over time and location.

2018 IOC of UNESCO (Intergovernmental Oceanographic Commission) 20 citations
Article Tier 2

IAEA-NUTEC Plastics Initiative: Advancing Global Understanding of Microplastic Pollution in the Ocean

This study describes the IAEA-NUTEC Plastics initiative, which is establishing a coordinated network of laboratories in over 100 countries to implement standardized microplastic sampling and analysis protocols, using radiometric and advanced technologies to improve the accuracy and cross-regional comparability of ocean microplastic data.

2025
Article Tier 2

Insights into technical challenges in the field of microplastic pollution through the lens of early career researchers (ECRs) and a proposed pathway forward

A network of early-career microplastic researchers from the UK and China identified the major technical barriers holding back the field: difficulty obtaining representative samples, lack of access to clean labs and standardized equipment, poor comparability of data across studies, and insufficient training. The paper proposes practical solutions including open-access databases, shared training resources, and broader international collaboration. Addressing these infrastructure gaps is important because the quality and comparability of microplastic pollution data directly affects our ability to assess environmental and health risks.

2023 Frontiers in Earth Science 6 citations
Article Tier 2

Global measurement of surface water microplastics using a unified size threshold

A globally deployable measurement approach was developed for monitoring microplastics on water surfaces using a unified protocol applicable across different geographic regions. Standardized global measurement methods are critical for generating comparable data needed to assess the scale of ocean plastic pollution.

2025 Water Research 1 citations
Article Tier 2

Methods for sampling, processing, identification,and quantification of microplastics in the marine environment

This paper reviews and compares the various methods used to collect, process, identify, and quantify microplastics across different environmental samples. It highlights the lack of standardized protocols as a major obstacle to comparing results across studies and calls for methodological harmonization.

2020 Oceanography in Japan 12 citations
Article Tier 2

The Caribbean Microplastics problem; harmonization of protocols through the IAEA.

This paper describes efforts by the IAEA NUTEC Plastics project to harmonize microplastic monitoring protocols across Caribbean countries, building regional capacity for standardized data collection and analysis. Participating countries established baseline contamination data using shared methods, enabling cross-country comparisons in a region where previous monitoring was highly fragmented.

2025
Article Tier 2

Collaboration and infrastructure is needed to develop an African perspective on micro(nano)plastic pollution

This perspective argues that understanding micro(nano)plastic pollution requires pan-African research networks and infrastructure, as current knowledge is dominated by studies from wealthier nations while low- and middle-income countries bear disproportionate impacts from mismanaged plastic waste.

2021 Environmental Research Letters 25 citations
Article Tier 2

Identifying opportunities for harmonized microplastics and mesoplastics monitoring for Caribbean Small Island Developing States using a spatiotemporal assessment of beaches in South Eleuthera, The Bahamas

Researchers assessed microplastic and mesoplastic pollution across 16 beaches with different coastal exposures in the Bahamas, finding that microplastics were the dominant debris type at 74 percent of samples, with significant differences between locations and seasons. The study highlights that Caribbean Small Island Developing States lack standardized monitoring protocols for microplastic pollution, leaving them without the data needed to participate effectively in global treaty negotiations. The findings point toward opportunities for developing harmonized monitoring approaches across the Caribbean region.

2023 Marine Pollution Bulletin 18 citations
Article Tier 2

Guidelines for the monitoring and assessment of plastic litter and microplastics in the ocean.

This GESAMP report provides comprehensive guidelines for monitoring and assessing plastic litter and microplastics in the ocean, including sampling methods, quality assurance protocols, and reporting standards. Standardized guidelines are essential for generating comparable data across global monitoring programs and informing effective policy responses.

2019 IOC of UNESCO (Intergovernmental Oceanographic Commission) 277 citations
Article Tier 2

A breakthrough in the harmonization of microplastics monitoring protocols in latin american region

This paper describes progress toward harmonizing microplastic monitoring protocols across Latin American countries, aiming to create consistent, comparable data from a region with significant plastic pollution challenges but historically fragmented scientific approaches. Standardized monitoring is a prerequisite for effective regional policy and for understanding how plastic pollution flows through South and Central American river systems.

2026 Zenodo (CERN European Organization for Nuclear Research)
Article Tier 2

A breakthrough in the harmonization of microplastics monitoring protocols in latin american region

This paper describes progress toward harmonizing microplastic monitoring protocols across Latin American countries, aiming to create consistent, comparable data from a region with significant plastic pollution challenges but historically fragmented scientific approaches. Standardized monitoring is a prerequisite for effective regional policy and for understanding how plastic pollution flows through South and Central American river systems.

2026 Zenodo (CERN European Organization for Nuclear Research)
Article Tier 2

Microplastic analysis—are we measuring the same? Results on the first global comparative study for microplastic analysis in a water sample

Researchers conducted the first international comparative study of analytical methods for microplastic analysis in a water sample and found that comparability between methods was highly limited, underscoring the urgent need for standardized protocols in microplastic research.

2019 Analytical and Bioanalytical Chemistry 112 citations
Article Tier 2

Results of WEPAL-QUASIMEME/NORMANs first global interlaboratory study on microplastics reveal urgent need for harmonization

The first global interlaboratory study on microplastic determination revealed high variability in results across 34 participating laboratories, highlighting the urgent need for harmonized methods, certified reference materials, and standardized reporting to enable meaningful data comparisons.

2021 The Science of The Total Environment 65 citations
Article Tier 2

Methods for Studying Microplastic Pollution in Natural Waters: Current State and Recommendations

This methodological review addresses the lack of standardization in how scientists sample, process, and report microplastic contamination in natural waters, which makes it nearly impossible to compare results across studies. It details quality assurance and quality control steps — especially important given how easily tiny plastic particles contaminate samples from the lab environment itself — and provides concrete recommendations for sampling protocols and data reporting. Harmonizing these methods is a critical step toward building a reliable global database of microplastic pollution.

2024 Journal of Oceanological Research 2 citations
Article Tier 2

Guidelines for Harmonizing Ocean Surface Microplastic Monitoring Methods. Version 1.1.

This report provides guidelines for harmonizing ocean surface microplastic monitoring methods to allow better comparison of results across different studies. Without standardized approaches, the diversity of sampling and measurement techniques makes it nearly impossible to track global microplastic trends reliably.

2019 IOC of UNESCO (Intergovernmental Oceanographic Commission) 31 citations
Article Tier 2

Increasing our understanding of coastal microplastics and mesoplastics: a comparison of sampling methodologies using volunteer researchers

Researchers compared three different methods for sampling coastal microplastic and mesoplastic pollution using trained volunteers at three locations in southern England. They found that one citizen science method, the Big Microplastic Survey, consistently detected more plastic pollution and fewer zero counts than the other approaches. The study underscores the challenge of standardizing sampling methods and the importance of enabling meaningful comparisons across global monitoring efforts.

2025 Journal of Coastal Conservation 3 citations
Article Tier 2

Towards uniform metrological processes for the characterization and analysis of microplastics?

This study examines the lack of standardization across the multi-step analytical process for marine microplastic characterization -- from sampling through sample preparation to spectroscopic analysis -- highlighting how qualitative and quantitative variability between laboratories hinders the development of reliable numerical models for plastic transport in oceanographic flows.

2025
Article Tier 2

Innovative reference materials for method validation in microplastic analysis including interlaboratory comparison exercises

Researchers developed innovative reference materials for validating microplastic analysis methods, presenting interlaboratory comparison results that support quality assurance and standardization in the growing field of microplastic detection.

2023 Analytical and Bioanalytical Chemistry 39 citations
Article Tier 2

Reporting Marine Microplastics Data: the Need for a Standardized Protocol

This paper argues for standardized protocols for reporting marine microplastic data, noting that inconsistent methods across studies make it impossible to compare results or track pollution trends globally. The authors reviewed existing guidelines and proposed a minimum set of variables that should be reported in all marine microplastic studies. Standardization is urgently needed to enable policy-relevant monitoring of ocean plastic contamination.

2022 Journal of Environmental Accounting and Management 4 citations
Article Tier 2

Method for Quantifying and Characterization of Microplastics in Sand Beaches

This paper proposes a standardized method for sampling and characterizing microplastics in beach sand to improve comparability across studies. Consistent methodology is critical because current variation in field and lab techniques makes it difficult to combine or compare data from different research groups.

2020 Revista Internacional de Contaminación Ambiental 29 citations