Which radionuclides contribute most to seafood ingestion dose? DOI Creative Commons
Mathew P. Johansen, Justin P. Gwynn,

Julia G. Carpenter

et al.

Journal of Environmental Radioactivity, Journal Year: 2025, Volume and Issue: 287, P. 107706 - 107706

Published: May 2, 2025

Radiological ingestion doses from eating seafood are regularly evaluated near coastal nuclear facilities, following accidents/events and frequently in national studies worldwide. However, a recent global review found that published varied greatly depending on which radionuclides were selected for evaluation there has been tendency to omit important or focus less significant ones. This indicates need clear guidance prioritise such studies. Here, we use worldwide data 16 key contributing typical background dose. We account the loss of during cooking radioactive decay short-lived 210Po. Results indicate world consumer, naturally-occurring >99 % total dose, about 84 comes 210Po 8 210Pb. About 5 228Ra, far greater proportion than more frequently-assessed 226Ra (<1 %). Other Th- U-series provide lower contributions (0.07 %-0.70 %), while 14C provides 0.09 %. In comparison, contribution dose anthropogenic is <1 %, with 137Cs most (0.08 %) 90Sr, 99Tc, 110mAg 239Pu adding further 0.05 together. These percentage can vary somewhat consumption patterns (e.g., differing proportions fish, bivalves, etc.). dominant contributor irrespective country-specific diets restricted diet scenarios (fish-only, seaweed-only, Study results new improve design, interpretation communication assessments.

Language: Английский

Efficient and Selective Removal of Iodine in Aqueous Media Using Morphology-Controlled Porous Hyper-Cross-Linked Polymers DOI

Xuemei Li,

Yue Wang, Tong Li

et al.

ACS Applied Polymer Materials, Journal Year: 2025, Volume and Issue: 7(3), P. 1639 - 1650

Published: Jan. 30, 2025

Hyper-cross-linked polymers (HCPs) have demonstrated great potential for capture, catalysis, drug delivery, and energy storage attracted extensive research interest. Nevertheless, tuning their nanoscale morphology remains a challenge. Herein, we constructed series of HCPs (HCP[HaPb]) with various morphologies (nanospheres, nanorod-like, flower-like nanostructures) by controlling the molar ratios monomers hexakis(benzylthio)benzene quality. In addition, HCP[H200P3] rich nitrogen sulfur atoms showed fast adsorption rate high capacity I3– in aqueous media. The reached 98% within 5 min at liquid/solid ratio 1 mL mg–1, saturated 1.388 g g–1 was obtained 30 mg–1. Additionally, flow-through experiments revealed that an impressive removal flow 1.0 min–1. More importantly, could selectively capture presence competing anions. This work proved adsorbent highly selective has good prospects practical application I3–.

Language: Английский

Citations

1
Effect of Agriculture Land Use Practices on Selected Soil Properties and Macro-Aggregate Stability: A Case Study of Coastal Plain Sand, Akwa Ibom State, Nigeria DOI Open Access

I. J. Sam,

Inyang Godwin Edet,

O. A. Essien

et al.

Asian Journal of Soil Science and Plant Nutrition, Journal Year: 2025, Volume and Issue: 11(1), P. 25 - 36

Published: Jan. 17, 2025

The study was carried out in Coastal plain Sands. Southeastern Nigeria to evaluate Macro-aggregate stability under three land-use types; Rubber Plantation (RP). Oil Palm (OPP, and Forest plot (FP). Random soil core samples were collected five Points each of the types, given a total 15 samples, bulked for physical chemical analyses. Aggregate Separation done using nest four sieve sizes. indices means weight diameter dry wet (MWDd MWDw), water aggregate (WSA), Clay (AC), exchangeable sodium percentage (ESP) silt plus (ASC) calculated. data subjected into descriptive statistics correlation Matrix. result indicates that sand dominant particle size fraction. revealed MWDw recorded highest value at RP (1.128) lowest FP (0.963). WSA AC had mean (26.82) OPP (11.562) (4.85), OPP(1.54) (13.35) RP(1.22) FP(7.35) respectively. clay increases flocculation aggregate, while causes disintegration aggregate.

Language: Английский

Citations

0
Fukushima’s Tap and Groundwater a Decade after the Nuclear Accident with Radiocesium, Tritium, and Radon DOI
Donovan Anderson,

Yuki Oda,

Yasuyuki Taira

et al.

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: March 7, 2025

More than 13 years after the Fukushima Daiichi Nuclear Power Plant (FDNPP) accident, concerns remain about drinking water contamination from artificial radionuclides and ongoing discharge of tritiated into Pacific Ocean. However, natural unrelated to FDNPP releases can also contribute human radiation exposure. Here, we measured in tap groundwater assess exposure 222Rn (natural); 137Cs (artificial); 3H (both natural). Ten all samples had levels below detection limits (<0.02 Bq L-1), while only elevated (<3-399 L-1). Trace amounts (0.07-0.55 L-1) were both sources, with generally exhibiting higher levels. did not increase several discharges Estimated annual effective doses 0.57 μSv (137Cs), 0.0058 (3H), 20 (222Rn). For groundwater, 0.0072 1020 The primary source is naturally occurring rock formations. Boiling well a vented area reduced radon by 95%, significantly mitigating

Language: Английский

Citations

0
Elevated levels of tritium in surface water collected in the immediate aftermath of the Fukushima accident DOI
Khemruthai Kheamsiri, Donovan Anderson, Hirofumi Tazoe

et al.

Environmental Pollution, Journal Year: 2025, Volume and Issue: unknown, P. 126040 - 126040

Published: March 1, 2025

Language: Английский

Citations

0
Optimization and validation of combustion-based analysis of organically bound tritium in pine needles DOI
Haruka Kuwata, Khemruthai Kheamsiri, Ryohei Yamada

et al.

Journal of Radioanalytical and Nuclear Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: March 25, 2025

Language: Английский

Citations

0
Which radionuclides contribute most to seafood ingestion dose? DOI Creative Commons
Mathew P. Johansen, Justin P. Gwynn,

Julia G. Carpenter

et al.

Journal of Environmental Radioactivity, Journal Year: 2025, Volume and Issue: 287, P. 107706 - 107706

Published: May 2, 2025

Radiological ingestion doses from eating seafood are regularly evaluated near coastal nuclear facilities, following accidents/events and frequently in national studies worldwide. However, a recent global review found that published varied greatly depending on which radionuclides were selected for evaluation there has been tendency to omit important or focus less significant ones. This indicates need clear guidance prioritise such studies. Here, we use worldwide data 16 key contributing typical background dose. We account the loss of during cooking radioactive decay short-lived 210Po. Results indicate world consumer, naturally-occurring >99 % total dose, about 84 comes 210Po 8 210Pb. About 5 228Ra, far greater proportion than more frequently-assessed 226Ra (<1 %). Other Th- U-series provide lower contributions (0.07 %-0.70 %), while 14C provides 0.09 %. In comparison, contribution dose anthropogenic is <1 %, with 137Cs most (0.08 %) 90Sr, 99Tc, 110mAg 239Pu adding further 0.05 together. These percentage can vary somewhat consumption patterns (e.g., differing proportions fish, bivalves, etc.). dominant contributor irrespective country-specific diets restricted diet scenarios (fish-only, seaweed-only, Study results new improve design, interpretation communication assessments.

Language: Английский

Citations

0