Synchrotron-based imaging reveals the fate of selenium in striped marsh frog tadpoles

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dc.contributor.authorLanctôt, CMen_AU
dc.contributor.authorCresswell, Ten_AU
dc.contributor.authorLombi, Een_AU
dc.contributor.authorBennett, WWen_AU
dc.date.accessioned2021-09-13T21:55:40Zen_AU
dc.date.available2021-09-13T21:55:40Zen_AU
dc.date.issued2021-08-12en_AU
dc.date.statistics2021-09-13en_AU
dc.description.abstractSynchrotron-based X-ray fluorescence microscopy (XFM) coupled with X-ray absorption near-edge structure (XANES) imaging was used to study selenium (Se) biodistribution and speciation in Limnodynastes peronii tadpoles. Tadpoles were exposed to dissolved Se (30 μg/L) as selenite (SeIV) or selenate (SeVI) for 7 days followed by 3 days of depuration. High-resolution elemental maps revealed that Se partitioned primarily in the eyes (specifically the eye lens, iris, and retinal pigmented epithelium), digestive and excretory organs of SeIV-exposed tadpoles. Speciation analysis confirmed that the majority of accumulated Se was converted to organo-Se. Multielement analyses provided new information on Se colocalization and its impact on trace element homeostasis. New insights into the fate of Se on a whole organism scale contribute to our understanding of the mechanisms and risks associated with Se pollution. © 2021 American Chemical Societyen_AU
dc.identifier.citationLanctôt, C. M., Cresswell, T., Lombi, E., & Bennett, W. W. (2021). Synchrotron-based imaging reveals the fate of selenium in striped marsh frog tadpoles. Environmental Science & Technology, 55(17), 11848-11858. doi:10.1021/acs.est.1c02028en_AU
dc.identifier.issn1520-5851en_AU
dc.identifier.issue17en_AU
dc.identifier.journaltitleEnvironmental Science & Technologyen_AU
dc.identifier.pagination11848-11858en_AU
dc.identifier.urihttps://doi.org/10.1021/acs.est.1c02028en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/11677en_AU
dc.identifier.volume55en_AU
dc.language.isoenen_AU
dc.publisherAmerican Chemical Societyen_AU
dc.subjectAmphibiansen_AU
dc.subjectBiological accumulationen_AU
dc.subjectMulti-element analysisen_AU
dc.subjectSpectroscopyen_AU
dc.subjectX-ray fluorescence analysisen_AU
dc.subjectAnatomyen_AU
dc.subjectSeleniumen_AU
dc.subjectSelenium compoundsen_AU
dc.titleSynchrotron-based imaging reveals the fate of selenium in striped marsh frog tadpolesen_AU
dc.typeJournal Articleen_AU
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