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Interlaboratory comparison of microplastic extraction methods from marine biota tissues: A harmonization exercise of the Plastic Busters MPAs project

Marine Pollution Bulletin 2021 64 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 45 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.
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Deudero, Salud Deudero, María Cristina Fossi María Cristina Fossi María Cristina Fossi Cristina Panti, Cristina Panti, Carme Alomar, Teresa Romeo, María Cristina Fossi Matteo Baini, María Cristina Fossi Danae Patsiou, Cristina Panti, María Cristina Fossi María Cristina Fossi Teresa Romeo, Cristina Panti, María Cristina Fossi María Cristina Fossi Cristina Panti, Salud Deudero, Salud Deudero, Salud Deudero, María Cristina Fossi Teresa Romeo, Νικολέττα Δίγκα, Cristina Panti, María Cristina Fossi Νικολέττα Δίγκα, María Cristina Fossi Cristina Panti, Cristina Panti, Cristina Panti, Matteo Baini, Salud Deudero, Dario Giani, Matteo Baini, Matteo Baini, Teresa Romeo, Teresa Romeo, Teresa Romeo, María Cristina Fossi María Cristina Fossi Salud Deudero, Teresa Romeo, Salud Deudero, Teresa Romeo, Teresa Romeo, Teresa Romeo, Cristina Panti, Teresa Romeo, Teresa Romeo, Salud Deudero, María Cristina Fossi María Cristina Fossi María Cristina Fossi María Cristina Fossi María Cristina Fossi María 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Summary

An interlaboratory comparison tested two methods for extracting microplastics from fish gastrointestinal tracts and mussel tissue: 15% hydrogen peroxide digestion and 10% potassium hydroxide digestion. The exercise, conducted across four labs within the Plastic Busters MPAs project, aimed to harmonize extraction protocols for more comparable results.

In the framework of the Plastic Busters MPAs project, a harmonization exercise on two methods of microplastic extraction from biological samples i.e. 15% HO digestion and 10% KOH digestion was carried out. The two methods were tested in four laboratories on fish gastrointestinal tracts and mussel tissues spiked with polyethylene, polypropylene and polyethylene terephthalate. The recovery percentage of microplastics for each method, species and polymer tested were overall similar among laboratories, and interlaboratory coefficient of variation was less than 11% for the majority of samples. Microplastic recovery rates for the two methods were similar for each sample tested, but overall mean interlaboratory recovery rate using KOH (96.67%) was higher than HO (88.75%) Results validate the use of both methods for extracting microplastics from biota tissues. However, when comparing the two methods in terms of microplastic recovery rate, time consumed, technical difficulties and cost, digestion with 10% KOH is considered optimal.

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