Fertilizers rule REYs: agricultural catchments of Eastern Australia

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dc.contributor.authorCendón, DIen_AU
dc.contributor.authorHarris, SJen_AU
dc.contributor.authorKelly, BFJen_AU
dc.contributor.authorPeterson, MAen_AU
dc.contributor.authorHankin, SIen_AU
dc.contributor.authorRowling, Ben_AU
dc.contributor.authorWatson, Jen_AU
dc.contributor.authorXiao, Sen_AU
dc.date.accessioned2022-01-20T03:31:27Zen_AU
dc.date.available2022-01-20T03:31:27Zen_AU
dc.date.issued2019-08-18en_AU
dc.date.statistics2021-12-23en_AU
dc.description.abstractLanthanides, generally named Rare Earth Elements (REE), are part of the internal transition metals forming a group of 15 elements with very similar chemical characteristics and physical properties. REEs and Yttrium (named REY) are widely used to understand geochemical processes. The increasing use of REYs in technology as well as their presence as a by-product in some fertilizers has opened new pathways for these metals to enter the water cycle, thus making REYs tracers of anthropogenic activity. In this study we investigate the concentration and distribution of REYs in two predominantly agricultural catchments of Eastern Australia: the Namoi River with a 43,000 km2 catchment, which forms part of the headwaters of the Murray- Darling Basin; and the Nogoa River with a 27,600 km2 catchment, which forms part of the Fitzroy River catchment, the largest in eastern Australia flowing into the Great Barrier Reef. Bi-monthly sampling during 18 months was conducted at seven selected sites along both rivers. The [REY] in water samples were analyzed by automated chelation pre-concentration (SeaFast, ESI), followed by ICP-MS. Samples were automatically loaded onto a loop and injected to an iminodiacetate column that chelates REY allowing matrix Na+, Cl-, Ca2+, Mg2+ and, more importantly, Ba2+ ions to be rinsed out. The pre-concentration process allowed a ~20-fold increase in concentration. Results are compared to those obtained from commonly used fertilizers in the region. REY trends suggest a link to the fertilizers used in both catchments. No regional variations were apparent, possibly due to the prevailing dry conditions during the sampling period. Stream flow was controlled by dam releases in the upper ridges for both catchments.en_AU
dc.identifier.citationCendón, D. I., Harris, S. J., Kelly, B. F. J., Peterson, M. A., Hankin, S. I., Rowling, B., Watson,J., & Xiao, S. (2019). Fertilizers rule REYs: agricultural catchments of Eastern Australia. Abstract presented to Goldschmidt 2019, Barcelona 2019, 18-23 August. Retrieved from: https://goldschmidtabstracts.info/abstracts/abstractView?id=2019002546#pills-pdfen_AU
dc.identifier.conferenceenddate23 August 2019en_AU
dc.identifier.conferencenameGoldschmidt, Barcelona 2019en_AU
dc.identifier.conferenceplaceBarcelona, Spainen_AU
dc.identifier.conferencestartdate18 August 2019en_AU
dc.identifier.urihttps://goldschmidtabstracts.info/abstracts/abstractView?id=2019002546#pills-pdfen_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/12704en_AU
dc.language.isoenen_AU
dc.publisherGoldschmidten_AU
dc.subjectRare earthsen_AU
dc.subjectMetalsen_AU
dc.subjectYttriumen_AU
dc.subjectFertilizersen_AU
dc.subjectWateren_AU
dc.subjectAustraliaen_AU
dc.subjectAgricultureen_AU
dc.subjectSamplingen_AU
dc.titleFertilizers rule REYs: agricultural catchments of Eastern Australiaen_AU
dc.typeConference Abstracten_AU
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