Estimation of mercury speciation in soil standard reference materials with different extraction methods by ion chromatography coupled with ICP-MS |
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| Authors: | Misun Park Hyeon Yoon Cheolho Yoon Jae-Young Yu |
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| Institution: | (1) C4 EcoSolutions, 9 Mohr Road, Tokai, 7945, Cape Town, South Africa;(2) Department of Soil Science, Stellenbosch University, Private Bag X01, Matieland, 7602, South Africa;(3) Mpumalanga Tourism & Parks Agency, Private Bag X11338, Nelspruit, 1200, South Africa;(4) 10 Yilgarn St, Shenton Park, WA, 6008, Australia;(5) Department of Paraclinical Sciences, Faculty of Veterinary Science, University of Pretoria, Private Bag X04, Onderstepoort, 0110, South Africa |
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| Abstract: | Although numerous hypotheses have been proposed to explain geophagy, the primary driver of this behaviour remains elusive.
Supplementation of scarce nutrients is one commonly cited explanation. We examined the element concentration of three licks
relative to adjacent topsoils to infer the possible reasons for geophagy at Loskop Dam Nature Reserve. Lick samples had greater
concentrations of B, Co, Zn, Se, Mo and Mn (Loskop Main Lick); Cu (Klopperskloof Lick); and Na (Klopperskloof Lick and Rhenosterhoek
Lick) than those of adjacent topsoil. We suggest that supplementation with all or some of these nutrients is a likely driver
of geophagy in this fenced reserve, with different licks providing herbivores with different suites of nutrients. |
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