Extension of biotic ligand model to account for the effects of pH and phosphate in accurate prediction of arsenate toxicity
DC Field | Value | Language |
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dc.contributor.author | An, Jinsung | - |
dc.contributor.author | Jeong, Buyun | - |
dc.contributor.author | Nam, Kyoungphile | - |
dc.date.accessioned | 2023-08-16T07:41:29Z | - |
dc.date.available | 2023-08-16T07:41:29Z | - |
dc.date.issued | 2020-03 | - |
dc.identifier.issn | 0304-3894 | - |
dc.identifier.issn | 1873-3336 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/114072 | - |
dc.description.abstract | Biotic ligand model (BLM) was extended to predict the toxicity of inorganic arsenate (iAs(V)) to the luminescent bacteria, Aliivibrio fischeri. As the pH increased from 5 to 9, the HAsO42- form predominated more than the H2AsO4- form did, and the EC50[As]T (50% effective iAs(V) concentration) decreased drastically from 3554 ± 393 to 39 ± 6 μM; thus, the HAsO42- form was more toxic to A. fischeri than H2AsO4-. As the HPO42- activity increased from 0 to 0.44 mM, the EC50{HAsO42-} values (50% effective HAsO42- activity) increased from 31 ± 6 to 859 ± 128 μM, indicating that the toxicity of iAs(V) decreased, owing to the competition caused by the structural similarity between iAs(V) and phosphate ions. However, activities of Ca2+, Mg2+, K+, SO42-, NO3-, and HCO3- did not significantly affect the EC50{HAsO42-} values. The BLM was reconstructed to take into account the effects of pH and phosphate, and the conditional binding constants for H2PO4-, HPO42-, H2AsO4-, and HAsO42- to the active binding sites of A. fischeri were obtained; 3.424 for logKXH2PO4, 4.588 for logKXHPO4, 3.067 for logKXH2AsO4, and 4.802 for logKXHAsO4. The fraction of active binding sites occupied by iAs(V) to induce 50% toxicity (fmix50%) was found to be 0.616. © 2019 Elsevier B.V. | - |
dc.format.extent | 7 | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | Elsevier BV | - |
dc.title | Extension of biotic ligand model to account for the effects of pH and phosphate in accurate prediction of arsenate toxicity | - |
dc.type | Article | - |
dc.publisher.location | 네델란드 | - |
dc.identifier.doi | 10.1016/j.jhazmat.2019.121619 | - |
dc.identifier.scopusid | 2-s2.0-85076201932 | - |
dc.identifier.wosid | 000509618300086 | - |
dc.identifier.bibliographicCitation | Journal of Hazardous Materials, v.385, pp 1 - 7 | - |
dc.citation.title | Journal of Hazardous Materials | - |
dc.citation.volume | 385 | - |
dc.citation.startPage | 1 | - |
dc.citation.endPage | 7 | - |
dc.type.docType | 정기학술지(Article(Perspective Article포함)) | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalResearchArea | Environmental Sciences & Ecology | - |
dc.relation.journalWebOfScienceCategory | Engineering, Environmental | - |
dc.relation.journalWebOfScienceCategory | Environmental Sciences | - |
dc.subject.keywordPlus | BARLEY ROOT ELONGATION | - |
dc.subject.keywordPlus | FREE-ION ACTIVITY | - |
dc.subject.keywordPlus | COPPER TOXICITY | - |
dc.subject.keywordPlus | SOIL | - |
dc.subject.keywordPlus | BIOAVAILABILITY | - |
dc.subject.keywordPlus | METALS | - |
dc.subject.keywordPlus | ACID | - |
dc.subject.keywordAuthor | Aliivibrio fischeri | - |
dc.subject.keywordAuthor | Arsenate toxicity | - |
dc.subject.keywordAuthor | Biotic ligand model | - |
dc.subject.keywordAuthor | pH | - |
dc.subject.keywordAuthor | Phosphate | - |
dc.identifier.url | https://www.sciencedirect.com/science/article/pii/S0304389419315730?pes=vor | - |
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