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Reductive Transformation of Hexavalent Chromium in Ice Decreases Chromium Toxicity in Aquatic Animals

Cited 0 time in wos
Cited 2 time in scopus
Title
Reductive Transformation of Hexavalent Chromium in Ice Decreases Chromium Toxicity in Aquatic Animals
Other Titles
동결반응에 의해 독성이 저감된 6가 크롬의 수생생물독성평가
Authors
Kim, Bo-Mi
Kim, Bomi
Nam, Sang-Eun
Eom, Hye-Jin
Lee, Somyeong
Kim, Kitae
Rhee, Jae-Sung
Subject
EngineeringEnvironmental Sciences & Ecology
Keywords
chromium toxicitychromium reductionaquatic animaltoxicity endpointchemical reaction in ice
Issue Date
2022-03-15
Citation
Kim, Bo-Mi, et al. 2022. "Reductive Transformation of Hexavalent Chromium in Ice Decreases Chromium Toxicity in Aquatic Animals". ENVIRONMENTAL SCIENCE & TECHNOLOGY, 56(6): 3503-3513.
Abstract
In this study, the toxicity of hexavalent chromium [Cr(VI)] reduced by citric acid in ice was measured using representative aquatic model invertebrates (i.e., rotifer, water flea, amphipod, and polychaete) and a vertebrate (zebrafish) by analyzing short- and/or long-term endpoints that are frequently applied to each animal. Cr(VI) reduction in the presence of citric acid was markedly enhanced in the ice phase compared to that in an aqueous solution through the freeze concentration effect. The highly concentrated Cr(VI) and citric acid in ice grain boundaries were also confirmed using in situ cryogenic confocal Raman spectroscopy. Overall, exposure to Cr(VI) resulted in higher acute and/or chronic effects on aquatic animals, such as drastic mortality, growth inhibition, and decrease in offspring number, whereas the animals were increasingly tolerant to Cr(VI) that was reduced in the ice phase. Sublethal concentrations of Cr(VI) significantly decreased the antioxidant capacity in the aquatic animals. However, when the same concentrations of Cr(VI) were reduced in ice, these treatments showed no modulation or increase in the antioxidant defense system. Taken together, our results suggest that Cr(VI) reduction into Cr(III) was successfully achieved in ice and that this methodology can decrease the actual toxicity of Cr(VI) in aquatic animals.
URI
https://repository.kopri.re.kr/handle/201206/13822
DOI
http://dx.doi.org/10.1021/acs.est.1c07336
Type
Article
Station
King Sejong Station
Indexed
SCIE
Appears in Collections  
2021-2021, Investigation of ice microstructure properties for developing low-temperature purification and environment/energy materials (21-21) / Kim, Kitae (PE21120)
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