- Martin, Rachael, Dowling, Kim, Pearce, Dora, Bennett, John, Stopic, Attila
- Authors: Martin, Rachael , Dowling, Kim , Pearce, Dora , Bennett, John , Stopic, Attila
- Date: 2013
- Type: Text , Journal article
- Relation: Journal of Asian Earth Sciences Vol. 77, no. (2013), p. 256-261
- Full Text: false
- Reviewed:
- Description: Elevated levels of arsenic have been observed in some mine wastes and soils around historical gold mining areas in regional Victoria, Australia. Arsenic uptake from soil by children living in these areas has been demonstrated using toenail arsenic concentration as a biomarker, with evidence of some systemic absorption associated with periodic exposures. We conducted a follow-up study to ascertain if toenail arsenic concentrations, and risk factors for exposure, had changed over a five year period in an historical gold mining region in western regional Victoria, Australia. Residential soil samples (N= 14) and toenail clippings (N= 24) were analyzed for total arsenic using instrumental neutron activation analysis, including 19 toenail clippings samples that were obtained from the same study cohort in 2006. Toenail arsenic concentrations in 2011 (geometric mean, 0.171. μg/g; range, 0.030-0.540. μg/g) were significantly lower than those in 2006 (geometric mean, 0.464. μg/g; range, 0.150-2.10. μg/g; p<. 0.001). However, toenail arsenic concentrations were again correlated with soil arsenic levels (Spearman's rho= 0.630; p= 0.001). Spending time outdoors more often and for longer periods correlates with increased arsenic uptake (p< 0.05). Mining-influenced residential soils represent a long-term continuing source for potential arsenic exposure for children living in this historical mining region. © 2013.
- Description: C1
- Martin, Rachael, Dowling, Kim, Pearce, Dora, Florentine, Singarayer, Bennett, John, Stopic, Attila
- Authors: Martin, Rachael , Dowling, Kim , Pearce, Dora , Florentine, Singarayer , Bennett, John , Stopic, Attila
- Date: 2016
- Type: Text , Journal article
- Relation: Environmental Geochemistry and Health Vol. 38, no. 5 (2016), p. 1097-1114
- Full Text: false
- Reviewed:
- Description: Abandoned historical gold mining wastes often exist as geographically extensive, unremediated, and poorly contained deposits that contain elevated levels of As and other potentially toxic elements (PTEs). One of the key variables governing human exposure to PTEs in mine waste is particle size. By applying a size-resolved approach to mine waste characterisation, this study reports on the proportions of mine waste relevant to human exposure and mobility, as well as their corresponding PTE concentrations, in four distinct historical mine wastes from the gold province in Central Victoria, Australia. To the best of our knowledge, such a detailed investigation and comparison of historical mining wastes has not been conducted in this mining-affected region. Mass distribution analysis revealed notable proportions of waste material in the readily ingestible size fraction (aecurrency sign250 A mu m; 36.1-75.6 %) and the dust size fraction (aecurrency sign100 A mu m; 5.9-45.6 %), suggesting a high potential for human exposure and dust mobilisation. Common to all mine waste types were statistically significant inverse trends between particle size and levels of As and Zn. Enrichment of As in the finest investigated size fraction (aecurrency sign53 A mu m) is of particular concern as these particles are highly susceptible to long-distance atmospheric transport. Human populations that reside in the prevailing wind direction from a mine waste deposit may be at risk of As exposure via inhalation and/or ingestion pathways. Enrichment of PTEs in the finer size fractions indicates that human health risk assessments based on bulk contaminant concentrations may underestimate potential exposure intensities.
Operationalising digital soil mapping – lessons from Australia
- Kidd, Darren, Searle, Ross, Grundy, Mike, McBratney, Alex, Robinson, Nathan, O'Brien, Lauren, Zund, Peter, Arrouays, Dominique, Thomas, Mark, Padarian, José, Jones, Edward, Bennett, John, Minasny, Budiman, Holmes, Karen, Malone, Brendan, Liddicoat, Craig, Meier, Elizabeth, Stockmann, Uta, Wilson, Peter, Wilford, John, Payne, Jim, Ringrose-Voase, Anthony, Slater, Brian, Odgers, Nathan, Gray, Jonathan, van Gool, Dennis, Andrews, Kaitlyn, Harms, Ben, Stower, Liz, Triantafilis, John
- Authors: Kidd, Darren , Searle, Ross , Grundy, Mike , McBratney, Alex , Robinson, Nathan , O'Brien, Lauren , Zund, Peter , Arrouays, Dominique , Thomas, Mark , Padarian, José , Jones, Edward , Bennett, John , Minasny, Budiman , Holmes, Karen , Malone, Brendan , Liddicoat, Craig , Meier, Elizabeth , Stockmann, Uta , Wilson, Peter , Wilford, John , Payne, Jim , Ringrose-Voase, Anthony , Slater, Brian , Odgers, Nathan , Gray, Jonathan , van Gool, Dennis , Andrews, Kaitlyn , Harms, Ben , Stower, Liz , Triantafilis, John
- Date: 2020
- Type: Text , Journal article , Review
- Relation: Geoderma Regional Vol. 23, no. (2020), p.
- Full Text:
- Reviewed:
- Description: Australia has advanced the science and application of Digital Soil Mapping (DSM). Over the past decade, DSM in Australia has evolved from being purely research focused to become ‘operational’, where it is embedded into many soil-agency land resource assessment programs around the country. This has resulted from a series of ‘drivers’, such as an increased need for better quality and more complete soil information, and ‘enablers’, such as existing soil information systems, covariate development, serendipitous project funding, collaborations, and Australian DSM ‘champions’. However, these accomplishments were not met without some barriers along the way, such as a need to demonstrate and prove the science to the soil science community, and rapidly enable the various soil agencies' capacity to implement DSM. The long history of soil mapping in Australia has influenced the evolution and culmination of the operational DSM procedures, products and infrastructure in widespread use today, which is highlighted by several recent and significant Australian operational DSM case-studies at various extents. A set of operational DSM ‘workflows’ and ‘lessons learnt’ have also emerged from Australian DSM applications, which may provide some useful information and templates for other countries hoping to fast-track their own operational DSM capacity. However, some persistent themes were identified, such as applicable scale, and communicating uncertainty and map quality to end-users, which will need further development to progress operational DSM. © 2020 The Authors
- Authors: Kidd, Darren , Searle, Ross , Grundy, Mike , McBratney, Alex , Robinson, Nathan , O'Brien, Lauren , Zund, Peter , Arrouays, Dominique , Thomas, Mark , Padarian, José , Jones, Edward , Bennett, John , Minasny, Budiman , Holmes, Karen , Malone, Brendan , Liddicoat, Craig , Meier, Elizabeth , Stockmann, Uta , Wilson, Peter , Wilford, John , Payne, Jim , Ringrose-Voase, Anthony , Slater, Brian , Odgers, Nathan , Gray, Jonathan , van Gool, Dennis , Andrews, Kaitlyn , Harms, Ben , Stower, Liz , Triantafilis, John
- Date: 2020
- Type: Text , Journal article , Review
- Relation: Geoderma Regional Vol. 23, no. (2020), p.
- Full Text:
- Reviewed:
- Description: Australia has advanced the science and application of Digital Soil Mapping (DSM). Over the past decade, DSM in Australia has evolved from being purely research focused to become ‘operational’, where it is embedded into many soil-agency land resource assessment programs around the country. This has resulted from a series of ‘drivers’, such as an increased need for better quality and more complete soil information, and ‘enablers’, such as existing soil information systems, covariate development, serendipitous project funding, collaborations, and Australian DSM ‘champions’. However, these accomplishments were not met without some barriers along the way, such as a need to demonstrate and prove the science to the soil science community, and rapidly enable the various soil agencies' capacity to implement DSM. The long history of soil mapping in Australia has influenced the evolution and culmination of the operational DSM procedures, products and infrastructure in widespread use today, which is highlighted by several recent and significant Australian operational DSM case-studies at various extents. A set of operational DSM ‘workflows’ and ‘lessons learnt’ have also emerged from Australian DSM applications, which may provide some useful information and templates for other countries hoping to fast-track their own operational DSM capacity. However, some persistent themes were identified, such as applicable scale, and communicating uncertainty and map quality to end-users, which will need further development to progress operational DSM. © 2020 The Authors
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