https://ogma.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 Glacio-lacustrine aragonite deposition, meltwater evolution and glacial history during isotope stage 3 at Radok Lake, Amery Oasis, Northern Prince Charles Mountains, East Antarctica https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:3370 Wed 11 Apr 2018 12:19:35 AEST ]]> Heavy metals in wastewater: the effect of electrolyte composition on the precipitation of cadmium(II) using lime and magnesia https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:1767 Sat 24 Mar 2018 08:27:37 AEDT ]]> Heavy metals in wastewater: the effect of electrolyte composition on the precipitation of cadmium(II) using lime and magnesia https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:355 Sat 24 Mar 2018 07:42:36 AEDT ]]> The interplay between ternary molten carbonate and biomaterials during pressurized slow pyrolysis https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:45721 Mon 29 Jan 2024 18:37:58 AEDT ]]> Formation of calcite in the presence of dissolved organic matter: partitioning, fabrics and fluorescence https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:39968 3) crystals from weak solutions of (NH4)2CO3, CaCl2 and NH4Cl. These solutions also contained peat DOM (from 0 to 15 mgC/L). Fluorescence 3D excitation-emission matrix (3D EEM) analysis showed a strong, positive correlation between [DOM] in the parent-solution, and [DOM] in the calcite. Calcite precipitation was reduced at high DOM concentrations, potentially indicating inhibition of crystallisation. Partition coefficient values showed that DOMaq was subtly preferentially incorporated into calcite. Scanning electron microscope images indicated that the crystal structures were heavily influenced by DOM adsorption with finer, smooth-faced, rhombohedral crystals forming in growth solutions with low aqueous [DOM] (0–5 mgC/L), and prismatic, ‘impure’ crystals produced at high aqueous [DOM] (10 and 15 mgC/L). Overall, our results indicate that authigenic carbonates are likely to faithfully record variations in aqueous [DOM] within the natural range of DOM concentrations in representative freshwater systems (caves, soil water), and that crystal habits are altered by aqueous [DOM] within their growth solutions. We also applied our findings to three flowstones collected from three New Zealand caves which vary in climatic, vegetation and hydrological regimes. We conclude that differences in initial aqueous [DOM] do indeed control incorporation of DOM into calcite, and thus 3D EEM fluorescence can be used to reconstruct original aqueous [DOM] from authigenic carbonates.]]> Fri 15 Jul 2022 10:18:17 AEST ]]>