Radioisotope techniques and aquatic ecotoxicology: importance of understanding kinetics and internal location of metals

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dc.contributor.authorCresswell, Ten_AU
dc.contributor.authorMazumder, Den_AU
dc.contributor.authorCallaghan, PDen_AU
dc.contributor.authorNguyen, APen_AU
dc.contributor.authorCorry, Men_AU
dc.contributor.authorSimpson, SLen_AU
dc.date.accessioned2022-01-31T04:05:05Zen_AU
dc.date.available2022-01-31T04:05:05Zen_AU
dc.date.issued2015-07-08en_AU
dc.date.statistics2022-01-11en_AU
dc.description.abstractAquatic ecotoxicology is primarily concerned with the bioaccumulation and effects of anthropogenic contaminants to a range of biota. Traditional methods of assessing the bioaccumulation of contaminants by an organism have typically relied on destructive techniques, generally involving the dissection of internal organs, followed by acid digestion and analysis. To understand how organisms accumulate contaminants over time using these traditional methods, a large number of organisms was required to be sacrificed. Gamma-emitting metal radioisotopes are valuable tools for studying metal bioaccumulation in aquatic invertebrates, allowing the influx and efflux of multiple metals to be analysed rapidly, at multiple intervals in live organisms during an exposure period (Hervé-Fernández et al., 2010, Cresswell et al., 2015). Furthermore, autoradiography of sacrificed and cryosectioned organisms enables the organ distribution of accumulated metals to be visualised and quantified. To cryosection, organisms are snap-frozen to limit the mobilisation of chemical species, preserve the integrity of the organs and allow much higher resolution of organ-specific metal analysis compared to tradition dissection-digestion techniques. This paper describes two studies on a freshwater decapod crustacean that examined the kinetics of non-essential (cadmium) and essential (zinc) metal accumulation in a mixture, and the kinetics of internal partitioning of cadmium among major organs using radioisotope techniques to model environmental conditions.en_AU
dc.description.sponsorshipAustralian Nuclear Science and Technology Organisation (ANSTO)en_AU
dc.identifier.citationCresswell, T., Mazumder, D., Callaghan, P., Nguyen, A., Corry, M., Simpson, S. (2015). Radioisotope techniques and aquatic ecotoxicology: importance of understanding kinetics and internal location of metals in organisms. Paper presented to the 13th Australasian Environment Isotope Conference (AEIC), Sydney, 8-10th July 2015.en_AU
dc.identifier.conferenceenddate10 July 2015en_AU
dc.identifier.conferencename13th Australasian Environment Isotope Conference (AEIC)en_AU
dc.identifier.conferenceplaceSydney, Australiaen_AU
dc.identifier.conferencestartdate8 July 2015en_AU
dc.identifier.otherEP151086en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/12755en_AU
dc.language.isoenen_AU
dc.publisherUniversity of New South Wales and Australian Nuclear Science and Technology Organisationen_AU
dc.subjectAquatic ecosystemsen_AU
dc.subjectBiological accumulationen_AU
dc.subjectContaminationen_AU
dc.subjectOrgansen_AU
dc.subjectDecapodsen_AU
dc.subjectCrustaceansen_AU
dc.subjectMetalsen_AU
dc.subjectRadioisotopesen_AU
dc.titleRadioisotope techniques and aquatic ecotoxicology: importance of understanding kinetics and internal location of metalsen_AU
dc.typeConference Abstracten_AU
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