Back to papers
0
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. Environmental Sources Marine & Wildlife Sign in to save

Exploring possible controlling factors of spatial distribution of microplastics in sediments of a river segment (Loire River, France)

The Science of The Total Environment 2024 4 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.
Camille Croiset, Johnny Gaspéri Camille Croiset, Elie Dhivert, Johnny Gaspéri Elie Dhivert, Camille Croiset, Camille Croiset, Camille Croiset, Camille Croiset, Camille Croiset, Johnny Gaspéri Camille Croiset, Johnny Gaspéri Camille Croiset, Elie Dhivert, Johnny Gaspéri Elie Dhivert, Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Elie Dhivert, Elie Dhivert, Johnny Gaspéri Ngoc-Nam Phuong, Ngoc-Nam Phuong, Johnny Gaspéri Johnny Gaspéri Ngoc-Nam Phuong, Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Ngoc-Nam Phuong, Johnny Gaspéri Ngoc-Nam Phuong, Johnny Gaspéri Johnny Gaspéri Elie Dhivert, Elie Dhivert, Elie Dhivert, Elie Dhivert, Elie Dhivert, Aurore Zalouk‐Vergnoux, Elie Dhivert, Elie Dhivert, Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Aurore Zalouk‐Vergnoux, Johnny Gaspéri Johnny Gaspéri Aurore Zalouk‐Vergnoux, Aurore Zalouk‐Vergnoux, Johnny Gaspéri Elie Dhivert, Johnny Gaspéri Aurore Zalouk‐Vergnoux, Johnny Gaspéri Aurore Zalouk‐Vergnoux, Elie Dhivert, Elie Dhivert, Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Ngoc-Nam Phuong, Ngoc-Nam Phuong, Ngoc-Nam Phuong, Elie Dhivert, Elie Dhivert, Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Ngoc-Nam Phuong, Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Ngoc-Nam Phuong, Johnny Gaspéri Ngoc-Nam Phuong, Ngoc-Nam Phuong, 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 Cécile Grosbois, Johnny Gaspéri Cécile Grosbois, Johnny Gaspéri Cécile Grosbois, Johnny Gaspéri Johnny Gaspéri Cécile Grosbois, Cécile Grosbois, Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Aurore Zalouk‐Vergnoux, Johnny Gaspéri Aurore Zalouk‐Vergnoux, Aurore Zalouk‐Vergnoux, Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Aurore Zalouk‐Vergnoux, Aurore Zalouk‐Vergnoux, Aurore Zalouk‐Vergnoux, Johnny Gaspéri Johnny Gaspéri Agnès Baltzer, Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Agnès Baltzer, Agnès Baltzer, Agnès Baltzer, Agnès Baltzer, Agnès Baltzer, Agnès Baltzer, Agnès Baltzer, 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 Ngoc-Nam Phuong, Cécile Grosbois, Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Elie Dhivert, Johnny Gaspéri Johnny Gaspéri Elie Dhivert, Johnny Gaspéri Johnny Gaspéri Elie Dhivert, Elie Dhivert, Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Elie Dhivert, Johnny Gaspéri Johnny Gaspéri Elie Dhivert, Aurore Zalouk‐Vergnoux, Aurore Zalouk‐Vergnoux, Aurore Zalouk‐Vergnoux, Aurore Zalouk‐Vergnoux, Johnny Gaspéri Johnny Gaspéri Aurore Zalouk‐Vergnoux, Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Aurore Zalouk‐Vergnoux, Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri

Summary

At 14 sites along an 8 km Loire River segment, microplastic concentrations and polymer types varied significantly by sedimentary environment, with grain size and flooding frequency as key controlling factors for MP spatial distribution in river sediments.

Study Type Environmental

Microplastics (MP) have been reported in many rivers across the globe but their depositional and archiving mechanisms in sediments are not fully understood yet. The aim of this study was to identify potential controlling factors of MP spatial distribution in surface sediment after a characterisation (sediment composition, hydrological conditions, sedimentary environment) of 14 sampling sites in an 8 km segment of the Loire river. Samples were collected from 3 sedimentary environments (sandbars, riverbanks and semi-active channels) with diverse flooding frequencies, grain size distributions and total organic carbon (TOC) contents. After treatment of sediment samples, MP concentrations and sizes were determined and polymer types identified by μFTIR (micro Fourier transform infrared) spectroscopy. After checking the influence of sample-scaled variability over river segment-scaled variability, MP concentrations were evaluated to 867-10635 MP/kg of sediment dry weight (sed dw, size range 25-5000 μm) in the river segment. No environmental parameters were individually correlated with MP contamination in our study, possibly due to complex depositional environments in this river segment. A systemic approach however allowed to exhibit that sediment composition reflecting hydro-morpho-sedimentary conditions can help to understand MP distribution in a river segment. A higher MP contamination observed in semi-active channel samples (median contamination value of 4797 MP/kg sed dw) could indicate that MP deposition is favoured in fine-grained (FGS) and TOC-rich sediment, reflecting less energetic hydrological conditions. Moreover, increasing flooding frequency seems to favor accumulation of MP only in the case of semi-active channels. On the contrary, less MP were detected in sandbars and riverbanks (median contamination of 1296 MP/kg sed dw), formed in higher hydrodynamical energy conditions. As a 10-fold variability of MP concentration exists in the study area, the importance of multiplying replicates even at the scale of a small river segment is underlined to access representativity of MP contamination.

Read via DOI PubMed

Sign in to start a discussion.

Share this paper

Post Share Share Pin Email