Trace organic contaminants within solid matrices along an anthropized watercourse: Organo-mineral controls on their spatial distribution

Gaudu, Maëlla Le; Thiebault, Thomas; Quénéa, Katell; Alliot, Fabrice; Guigon, Elodie; Callonnec, Laurence Le

doi:10.1016/j.scitotenv.2022.153601

Cited by 7 publications

(3 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Bentazone has already been reported to cause a high risk to aquatic organisms in Palma et al (2021) study derived from its presence in surface waters collected in the Guadina Basin (Southern of Portugal) with mean concentrations ranging from 44.8 to 795.9 ng L − 1 . On the other hand, other studies have reported oxadiazon in sediments with concentrations ranging from 1.3 to 382 ng g-1 dw (Crane and Younghans-Haug, 1992;Le Gaudu et al, 2022;Peris and Eljarrat, 2021) in line with our study. Oxadiazon was already reported to cause a potential high risk to aquatic organisms by Peris and Eljarrat (2021) in sediments collected from several Catalonian river basins with a mean concentration of 44 ng g − 1 dw.…”

Section: Tablesupporting

confidence: 93%

Pesticides in Sediments of the Ebro River Delta Cultivated Area (NE Spain): Occurrence and Risk Assessment for Aquatic Organisms

Peris¹,

Barbieri

Postigo³

et al. 2022

SSRN Journal

View full text Add to dashboard Cite

Section: Tablesupporting

confidence: 93%

Pesticides in Sediments of the Ebro River Delta Cultivated Area (NE Spain): Occurrence and Risk Assessment for Aquatic Organisms

Peris¹,

Barbieri

Postigo³

et al. 2022

SSRN Journal

View full text Add to dashboard Cite

“…We hypothesize that a suite of factors are at work, such as redox conditions and sediment mineralogy. For example, the profile of organic molecules can be influenced by sorption, desorption, and transformations associated with organo-mineral interactions (Mead and Goñi, 2008;Zhou and Broodbank, 2014;Le Gaudu et al, 2022). It is also plausible that lower OM diversity in sediments, relative to surface water (Garayburu-Caruso et al, 2020b), could be due to organo-mineral interactions selecting for and against certain types of organic molecules (Aufdenkampe et al, 2007;Kleber et al, 2007Kleber et al, , 2021.…”

Section: Resultsmentioning

confidence: 99%

Organic matter transformations are disconnected between surface water and the hyporheic zone

et al. 2022

View full text Add to dashboard Cite

Abstract. Biochemical transformations of organic matter (OM) are a primary driver of river corridor biogeochemistry, thereby modulating ecosystem processes at local to global scales. OM transformations are driven by diverse biotic and abiotic processes, but we lack knowledge of how the diversity of those processes varies across river corridors and across surface and subsurface components of river corridors. To fill this gap we quantified the number of putative biotic and abiotic transformations of organic molecules across diverse river corridors using ultra-high-resolution mass spectrometry. The number of unique transformations is used here as a proxy for the diversity of biochemical processes underlying observed profiles of organic molecules. For this, we use public data spanning the contiguous United States (ConUS) from the Worldwide Hydrobiogeochemical Observation Network for Dynamic River Systems (WHONDRS) consortium. Our results show that surface water OM had more biotic and abiotic transformations than OM from shallow hyporheic zone sediments (1–3 cm depth). We observed substantially more biotic than abiotic transformations, and the numbers of biotic and abiotic transformations were highly correlated with each other. We found no relationship between the number of transformations in surface water and sediments and no meaningful relationships with latitude, longitude, or climate. We also found that the composition of transformations in sediments was not linked with transformation composition in adjacent surface waters. We infer that OM transformations represented in surface water are an integrated signal of diverse processes occurring throughout the upstream catchment. In contrast, OM transformations in sediments likely reflect a narrower range of processes within the sampled volume. This indicates decoupling between the processes influencing surface water and sediment OM, despite the potential for hydrologic exchange to homogenize OM. We infer that the processes influencing OM transformations and the scales at which they operate diverge between surface water and sediments.

show abstract

“…Recovery rates and limits of quantification (LOQs) are also provided (Supporting Information, Table S3). The details of the analytical method are described in the Supporting Information and are adapted from previous works (Le Gaudu et al, 2022).…”

Section: Fish Sample Preparation Protocols For Preparation Chemicalmentioning

confidence: 99%

Contrasted Antibiotics and Pesticides Occurrence in Fish Exposed In Situ to Urban Effluents: A 20‐Day Caging Experiment

Marchand,

Petit,

Alliot

et al. 2024

Enviro Toxic and Chemistry

Self Cite

View full text Add to dashboard Cite

Urban freshwater ecosystems receive a wide array of organic pollutants through wastewater treatment plant (WWTP) discharges and agricultural runoff. Evaluating the fate and effects of antibiotics and pesticides can be a challenging task, especially the effects on freshwater vertebrates because of their abilities to metabolize and excrete these chemicals, and because of their high mobility and escape behavior when exposed to stressful environmental conditions. In the present study, 37 wild gudgeons (Gobio gobio) were caged for a period of up to 20 days, upstream and downstream of a WWTP effluent discharge in the Orge River (a tributary of the Seine River, France). The pesticides and antibiotics’ levels were weekly monitored in the fish muscles and compared to environmental contamination (water and sediments). Our results highlighted a slight impregnation of pesticides in the gudgeon muscles, at the downstream site, after 20 days of exposure. Concerning antibiotics, ofloxacin was the most detected compound in fish muscles (85% of occurrence) and ranged from undetectable to 8 ng.g‐1 dry weight. Antibiotic levels in fish muscle were not higher at the downstream site and did not increase with exposure duration, despite high levels in the water (up to 29 times greater than upstream). Potential ecotoxicological effects were also evaluated: body condition did not differ between the caging location and exposure time. Three oxidative status markers in the fish livers showed significant shifts after 14 days of caging. Our results suggest a high clearance rate of antibiotics and to a lesser extent, of pesticides in wild gudgeons, which could be explained by changes in xenobiotic metabolism with pollutant exposure.

show abstract

Trace organic contaminants within solid matrices along an anthropized watercourse: Organo-mineral controls on their spatial distribution

Cited by 7 publications

References 55 publications

Pesticides in Sediments of the Ebro River Delta Cultivated Area (NE Spain): Occurrence and Risk Assessment for Aquatic Organisms

Pesticides in Sediments of the Ebro River Delta Cultivated Area (NE Spain): Occurrence and Risk Assessment for Aquatic Organisms

Organic matter transformations are disconnected between surface water and the hyporheic zone

Contrasted Antibiotics and Pesticides Occurrence in Fish Exposed In Situ to Urban Effluents: A 20‐Day Caging Experiment

Contact Info

Product

Resources

About