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Article ? AI-assigned paper type based on the abstract. Classification may not be perfect — flag errors using the feedback button. Tier 2 ? Original research — experimental, observational, or case-control study. Direct primary evidence. Detection Methods Environmental Sources Marine & Wildlife Policy & Risk Sign in to save

Sequential combination of micro-FTIR imaging spectroscopy and pyrolysis-GC/MS for microplastic quantification. Application to river sediments

Analytical Methods 2025 6 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 53 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.
Rachid Dris, Nadia Bouzid, Nadia Bouzid, Nadia Bouzid, Nadia Bouzid, Nadia Bouzid, Nadia Bouzid, Nadia Bouzid, Nadia Bouzid, Rachid Dris, Johnny Gaspéri, Rachid Dris, Nadia Bouzid, Nadia Bouzid, Nadia Bouzid, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Nadia Bouzid, Nadia Bouzid, Rachid Dris, Nadia Bouzid, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Bruno Tassin Johnny Gaspéri, Bruno Tassin Johnny Gaspéri, Rachid Dris, Rachid Dris, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Bruno Tassin Rachid Dris, Rachid Dris, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Rachid Dris, Bruno Tassin Johnny Gaspéri, Johnny Gaspéri, Bruno Tassin Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Nadia Bouzid, Bruno Tassin Nadia Bouzid, Johnny Gaspéri, Bruno Tassin Bruno Tassin Bruno Tassin Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Bruno Tassin Johnny Gaspéri, Bruno Tassin Johnny Gaspéri, Johnny Gaspéri, Bruno Tassin Bruno Tassin Bruno Tassin Johnny Gaspéri, Bruno Tassin Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Bruno Tassin Rachid Dris, Bruno Tassin Bruno Tassin Bruno Tassin Bruno Tassin Rachid Dris, Bruno Tassin Rachid Dris, Bruno Tassin Bruno Tassin Bruno Tassin Bruno Tassin Bruno Tassin Bruno Tassin Bruno Tassin Bruno Tassin Bruno Tassin Bruno Tassin Bruno Tassin Bruno Tassin Bruno Tassin Bruno Tassin Bruno Tassin Bruno Tassin Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Rachid Dris, Rachid Dris, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Rachid Dris, Rachid Dris, Bruno Tassin Bruno Tassin Rachid Dris, Rachid Dris, Johnny Gaspéri, Rachid Dris, Bruno Tassin Bruno Tassin Johnny Gaspéri, Bruno Tassin Johnny Gaspéri, Bruno Tassin Bruno Tassin Johnny Gaspéri, Bruno Tassin Bruno Tassin Bruno Tassin Bruno Tassin Rachid Dris, Johnny Gaspéri, Bruno Tassin Bruno Tassin Bruno Tassin Rachid Dris, Bruno Tassin Bruno Tassin Bruno Tassin Bruno Tassin Johnny Gaspéri, Johnny Gaspéri, Bruno Tassin Bruno Tassin Rachid Dris, Bruno Tassin Bruno Tassin Bruno Tassin Bruno Tassin Johnny Gaspéri, Rachid Dris, Johnny Gaspéri, Bruno Tassin Bruno Tassin Bruno Tassin Bruno Tassin Bruno Tassin Bruno Tassin Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Rachid Dris, Bruno Tassin Bruno Tassin Johnny Gaspéri, Bruno Tassin Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Rachid Dris, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Bruno Tassin Bruno Tassin Bruno Tassin Johnny Gaspéri, Rachid Dris, Bruno Tassin Bruno Tassin Bruno Tassin Rachid Dris, Bruno Tassin Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Rachid Dris, Rachid Dris, Johnny Gaspéri, Bruno Tassin Bruno Tassin Bruno Tassin Bruno Tassin Bruno Tassin Bruno Tassin Bruno Tassin Johnny Gaspéri, Johnny Gaspéri, Bruno Tassin Johnny Gaspéri, Bruno Tassin Johnny Gaspéri, Bruno Tassin Bruno Tassin Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Bruno Tassin Johnny Gaspéri, Bruno Tassin Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Bruno Tassin Bruno Tassin Bruno Tassin Bruno Tassin Bruno Tassin Bruno Tassin Bruno Tassin Bruno Tassin Bruno Tassin Johnny Gaspéri, Johnny Gaspéri, Nadia Bouzid, Bruno Tassin Bruno Tassin Nadia Bouzid, Bruno Tassin Bruno Tassin Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Bruno Tassin Johnny Gaspéri, Johnny Gaspéri, Bruno Tassin Johnny Gaspéri, Johnny Gaspéri, Bruno Tassin

Summary

Researchers developed a protocol combining micro-FTIR imaging and pyrolysis-GC/MS for sequential microplastic analysis in river sediments. While both methods showed consistent total mass concentrations across sites, they found discrepancies in polymer proportions due to each method's specific limitations, providing practical recommendations for comparing results across different analytical approaches.

Polymers
PE PP PS
Study Type Environmental

Several studies have focused on quantifying microplastics (MP) in the environment using μ-FTIR and Py-GC/MS, the most common analytical methods. However, their application to complex matrices like sediments is affected by interferences specific to each method. In this study, we developed a protocol combining μ-FTIR and Py-GC/MS for sequential analysis of MP (10-500 μm) in 16 river sediment samples, targeting PE, PP, and PS polymers. Mass concentrations were estimated from the particle volume in μ-FTIR and measured directly by Py-GC/MS using internal calibration. Results show consistency between the two methods across different sites, with variability of two orders of magnitude in concentration ranges from 0.3 to 50 items g<sup>-1</sup> and 0.2 to 17 μg g<sup>-1</sup> for μ-FTIR, and 0.8 to 21 μg g<sup>-1</sup> for Py-GC/MS. Replicate analyses (2 to 6 per site) revealed that intra-site variability was mainly influenced by sample preparation and, to a lesser extent, by the measurement technique. While estimated and measured concentrations were similar, discrepancies were observed in polymer proportions: PP predominated in μ-FTIR, while PS was more prevalent in Py-GC/MS. These differences are explained by the specific limitations of each method, especially the limited detection of synthetic fibres and tyre or road abrasion particles by μ-FTIR, which are detected as MP by Py-GC/MS. This comparative study provides recommendations for evaluating compatibility between studies using either technique and offers guidelines for selecting the most appropriate method based on research interests.

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