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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 Gut & Microbiome Human Health Effects Marine & Wildlife Nanoplastics Remediation Sign in to save

Uptake, Whole-Body Distribution, and Depuration of Nanoplastics by the Scallop <i>Pecten maximus</i> at Environmentally Realistic Concentrations

Environmental Science & Technology 2018 365 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 55 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.
Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Theodore B. Henry, Maya Al-Sid-Cheikh, Maya Al-Sid-Cheikh, Maya Al-Sid-Cheikh, Richard C. Thompson Maya Al-Sid-Cheikh, Richard C. Thompson Richard C. Thompson Richard C. Thompson Theodore B. Henry, Steve Rowland, Maya Al-Sid-Cheikh, Theodore B. Henry, Richard C. Thompson Steve Rowland, Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Theodore B. Henry, Richard C. Thompson Richard C. Thompson Richard C. Thompson Steve Rowland, Maya Al-Sid-Cheikh, Richard C. Thompson Richard C. Thompson Richard C. Thompson Theodore B. Henry, Richard C. Thompson Theodore B. Henry, Theodore B. Henry, Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson K.A. Stevenson, K.A. Stevenson, Steve Rowland, K.A. Stevenson, K.A. Stevenson, Richard C. Thompson Theodore B. Henry, Claude Rouleau, Richard C. Thompson Richard C. Thompson Steve Rowland, Steve Rowland, Theodore B. Henry, Richard C. Thompson Theodore B. Henry, Claude Rouleau, Theodore B. Henry, Claude Rouleau, Richard C. Thompson Theodore B. Henry, Theodore B. Henry, Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Claude Rouleau, Richard C. Thompson Maya Al-Sid-Cheikh, Richard C. Thompson Richard C. Thompson Richard C. Thompson Theodore B. Henry, Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Theodore B. Henry, Richard C. Thompson Theodore B. Henry, Richard C. Thompson Richard C. Thompson Theodore B. Henry, Maya Al-Sid-Cheikh, Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Claude Rouleau, Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Theodore B. Henry, Richard C. Thompson Claude Rouleau, Theodore B. Henry, Theodore B. Henry, Richard C. Thompson Richard C. Thompson Richard C. Thompson Steve Rowland, Richard C. Thompson Maya Al-Sid-Cheikh, Theodore B. Henry, Richard C. Thompson Maya Al-Sid-Cheikh, Steve Rowland, Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Theodore B. Henry, Richard C. Thompson Richard C. Thompson Maya Al-Sid-Cheikh, Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Theodore B. Henry, Richard C. Thompson Richard C. Thompson Richard C. Thompson Richard C. Thompson Maya Al-Sid-Cheikh, Richard C. Thompson Richard C. Thompson

Summary

Researchers used radiolabeled nanoplastics at environmentally realistic concentrations to track uptake in scallops and found the particles distributed throughout the body, including the intestine, kidney, gills, and muscle. After transfer to clean water, scallops retained a significant fraction of nanoplastics for weeks, indicating slow depuration rates even at low exposure levels.

Previous studies of uptake and effects of nanoplastics by marine organisms have been conducted at what may be unrealistically high concentrations. This is a consequence of the analytical challenges in tracking plastic particles in organisms at environmentally relevant concentrations and highlights the need for new approaches. Here, we present pulse exposures of <sup>14</sup>C-radiolabeled nanopolystyrene to a commercially important mollusk, Pecten maximus, at what have been predicted to be environmentally relevant concentrations (<15 μg L<sup>-1</sup>). Uptake was rapid and was greater for 24 nm than for 250 nm particles. After 6 h, autoradiography showed accumulation of 250 nm nanoplastics in the intestine, while 24 nm particles were dispersed throughout the whole-body, possibly indicating some translocation across epithelial membranes. However, depuration was also relatively rapid for both sizes; 24 nm particles were no longer detectable after 14 days, although some 250 nm particles were still detectable after 48 days. Particle size thus apparently influenced the biokinetics and suggests a need for chronic exposure studies. Modeling extrapolations indicated that it could take 300 days of continued environmental exposure for uptake to reach equilibrium in scallop body tissues although the concentrations would still below 2.7 mg g<sup>-1</sup>. Comparison with previous work in which scallops were exposed to nonplastic (silver) nanomaterials of similar size (20 nm), suggests that nanoparticle composition may also influence the uptake tissue distributions somewhat.

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