Heavy metal pathways and archives in biological tissue

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dc.contributor.authorOrlic, Ien_AU
dc.contributor.authorSiegele, Ren_AU
dc.contributor.authorMenon, DDen_AU
dc.contributor.authorMarkich, SJen_AU
dc.contributor.authorCohen, DDen_AU
dc.contributor.authorJeffree, RAen_AU
dc.contributor.authorMcPhail, DCen_AU
dc.contributor.authorSarbutt, Aen_AU
dc.contributor.authorStelcer, Een_AU
dc.date.accessioned2025-02-13T21:46:54Zen_AU
dc.date.available2025-02-13T21:46:54Zen_AU
dc.date.issued2002-05en_AU
dc.date.statistics2025-02-25en_AU
dc.descriptionPhysical copy held by ANSTO Library at DDC: 530.416/3en_AU
dc.description.abstractNuclear milli and microprobes at the Australian Nuclear Science and Technology Organisation (ANSTO) were used to determine lead accumulation in native Australian plants and animals. Three species of eucalypt plants (Eucalyptus camaldulensis, Eucalyptus globulus and Eucalyptus lesouefii), one species of salt bush (Atriplex burbhanyana) and one species each of acacia (Acacia saligna) and estuarine crocodiles (Crocodylus porosus) were investigated. Experimentally grown plants were subjected to a nutrient solution with a pH of 5 and spiked with a 200 μmol concentration of Pb. Lead concentrations in leaves of both E. globulus and E. camaldulensis showed an almost exponential decrease from the base of the main vein to the tip. Similarly, Pb concentrations decreased from the main vein to secondary veins. Concentrations of essential elements such as K, Fe, Zn and Br in the main and secondary veins were constant within experimental uncertainty. In contrast, the concentrations of Pb in the leaf veins of E. lesouefii were much lower and showed no systematic pattern. In stem and root samples the highest concentration of Pb was found in roots and stem of E. globulus and A. burbhanyana followed by E. camaldulensis. Some Pb was found in roots of A. saligna and only very low concentration in stem of the same plant. More detailed analysis of thin cross-sectional samples of roots and stem showed that Pb is present in much higher concentration in the growth area of the plant structure (i.e. meristemic region) and in relatively low concentration within the pith region and outer cortex. The osteoderms (dermal bones) of estuarine crocodiles, exposed to lead ammunition in food from the hunting activities of traditional Aboriginal owners, were sampled at two sites in Kakadu National Park, northern Australia. PIXE analyses showed enhanced, but relatively constant, ratios of Pb/Ca in the annual laminations. This was consistent with both their history of long term exposure to elevated anthropogenic Pb sources and the hypothesis that the osteoderm can be used as an archive of the crocodile's exposure to Pb during its life. © 2002 Elsevier Science B.V.en_AU
dc.identifier.citationOrlic, I., Siegele, R., Menon, D. D., Markich, S. J., Cohen, D. D., Jeffree, R. A., McPhail, D. C., Sarbutt, A., & Stelcer, E. (2002). Heavy metal pathways and archives in biological tissue. Paper presented to the 15th International Conference on Ion-Beam Analysis (IBA-15): 12th AINSE Conference on Nuclear Techniques of Analysis (NTA-12), Cairns, Australian 15-20 July 2001. In Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 190(1), 439-444. doi:10.1016/S0168-583X(02)00455-Xen_AU
dc.identifier.conferenceenddate2001-07-20en_AU
dc.identifier.conferencename15th International Conference on Ion-Beam Analysis (IBA-15): 12th AINSE Conference on Nuclear Techniques of Analysis (NTA-12)en_AU
dc.identifier.conferenceplaceCairns, Australiaen_AU
dc.identifier.conferencestartdate2001-07-15en_AU
dc.identifier.editorsR. G. Elliman and M. C. Ridgwayen_AU
dc.identifier.issn0168-583Xen_AU
dc.identifier.issue1-4en_AU
dc.identifier.journaltitleNuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atomsen_AU
dc.identifier.pagination439-444en_AU
dc.identifier.urihttps://doi.org/10.1016/s0168-583x(02)00455-xen_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/15985en_AU
dc.identifier.volume190en_AU
dc.languageEnglishen_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectHeavy metalsen_AU
dc.subjectPlantsen_AU
dc.subjectPIXE analysisen_AU
dc.subjectContaminationen_AU
dc.subjectElectron microprobe analysisen_AU
dc.subjectANSTOen_AU
dc.subjectAustralian organizationsen_AU
dc.subjectLeaden_AU
dc.subjectSeedsen_AU
dc.subjectLeavesen_AU
dc.subjectAnimal tissuesen_AU
dc.titleHeavy metal pathways and archives in biological tissueen_AU
dc.typeConference Paperen_AU
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