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Development of a fast and efficient method to analyze microplastics in planktonic samples

Marine Pollution Bulletin 2021 39 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 40 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.
J.M. Andrade, Verónica Fernández‐González, Adrián López-Rosales, Adrián López-Rosales, Adrián López-Rosales, Adrián López-Rosales, Adrián López-Rosales, Adrián López-Rosales, Adrián López-Rosales, Adrián López-Rosales, Adrián López-Rosales, Adrián López-Rosales, Verónica Fernández‐González, Verónica Fernández‐González, J.M. Andrade, J.M. Andrade, Adrián López-Rosales, J.M. Andrade, J.M. Andrade, J.M. Andrade, J.M. Andrade, J.M. Andrade, J.M. Andrade, J.M. Andrade, J.M. Andrade, J.M. Andrade, J.M. Andrade, J.M. Andrade, J.M. Andrade, Soledad Muniategui‐Lorenzo Verónica Fernández‐González, Verónica Fernández‐González, Soledad Muniategui‐Lorenzo Adrián López-Rosales, Adrián López-Rosales, Adrián López-Rosales, J.M. Andrade, J.M. Andrade, Soledad Muniategui‐Lorenzo J.M. Andrade, Purificación López‐Mahía, Purificación López‐Mahía, Verónica Fernández‐González, Soledad Muniategui‐Lorenzo Verónica Fernández‐González, J.M. Andrade, Purificación López‐Mahía, Purificación López‐Mahía, Soledad Muniategui‐Lorenzo Adrián López-Rosales, G. Grueiro-Noche, G. Grueiro-Noche, Purificación López‐Mahía, Purificación López‐Mahía, Soledad Muniategui‐Lorenzo Purificación López‐Mahía, Verónica Fernández‐González, Verónica Fernández‐González, Verónica Fernández‐González, Verónica Fernández‐González, Verónica Fernández‐González, Purificación López‐Mahía, Purificación López‐Mahía, Purificación López‐Mahía, Purificación López‐Mahía, Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo J.M. Andrade, J.M. Andrade, J.M. Andrade, Adrián López-Rosales, Purificación López‐Mahía, Adrián López-Rosales, Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Purificación López‐Mahía, Purificación López‐Mahía, Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Verónica Fernández‐González, Purificación López‐Mahía, Soledad Muniategui‐Lorenzo Purificación López‐Mahía, J.M. Andrade, Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo J.M. Andrade, J.M. Andrade, J.M. Andrade, Soledad Muniategui‐Lorenzo J.M. Andrade, J.M. Andrade, Purificación López‐Mahía, Purificación López‐Mahía, Purificación López‐Mahía, Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo J.M. Andrade, Soledad Muniategui‐Lorenzo J.M. Andrade, Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Soledad Muniategui‐Lorenzo Verónica Fernández‐González, J.M. Andrade, Soledad Muniategui‐Lorenzo

Summary

Researchers compared three digestion treatments — alkaline potassium hydroxide, enzymatic, and a novel method — for analyzing microplastics in planktonic samples, evaluating their efficiency and impact on microplastic particle integrity to help establish consensus protocols.

Polymers
PA PE PET PP PS PVC

Microplastics (MPs) affect plankton (a basis of the trophic chain) and planktivorous fish can ingest them through food confusion or by trophic transmission. Consensus to determine MPs in plankton is lacking and, so, three digestion treatments were evaluated: Alkaline (potassium hydroxide) and enzymatic (protease plus lipase) digestions, both combined with a hydrogen peroxide stage; and an oxidative method using a surfactant (sodium dodecyl sulfate) plus hydrogen peroxide. The alkaline method using potassium hydroxide was found to damage polystyrene. MPs were identified with a stereomicroscope and characterized by reflectance infrared microscopy in semi-automatic mode (using dedicated multi-well aluminium plates). Analytical recoveries for polypropylene, polystyrene, polyethylene, polyamide, polyvinyl chloride and polyethylene terephthalate were higher than 75%, 82% and 83% for the alkaline, enzymatic and oxidative treatments, respectively. The enzymatic method was successfully validated in a European interlaboratory exercise and the oxidative method was demonstrated to be a reliable, fast and cheaper alternative.

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