The behaviour of the rare earth elements during estuarine mixing—revisited

Formation of fault-related calcite precipitates and their implications for dating fault activity in the East Anatolian and Dead Sea fault zones

“…Isotope measurements were obtained on an Isoprime Dual Inlet stable isotope ratio mass spectrometer (SIRMS) that was calibrated using NBS-18, NBS-19, and ANU-M2 carbonate standards. The d Rare earth elements were analysed on a Thermo X-series inductively coupled plasma mass spectrometry (ICP-MS) instrument with conditions as described in Lawrence & Kamber (2006 Ni and 235 U are enriched isotopes) for internal correction of mass response drift following the protocol described in Eggins et al (1997). Apart from internal drift correction, the raw data were also corrected for the low, but detectable blank, isobaric interferences from oxides and doubly charged species.…”

87Sr/86Sr and trace element mapping of geosphere-hydrosphere-biosphere interactions: A case study in Ireland

“…The dissolved REE+Y composition of local streams is controlled to some degree by the local catchment geology and weathering conditions, providing a snapshot of the flux to the hydrosphere. However, in any given drainage basin, physio-chemical parameters such as pH, dissolved organic carbon (DOC) concentration, aquatic chemistry processes, weathering of individual mineral phases and land use can also influence the measured REE+Y chemistry of river waters (Byrne and Sholkovitz, 1996;Chudaev et al, 2016;Deberdt et al, 2002;Elderfield et al, 1990;Lawrence and Kamber, 2006;Matsunaga et al, 2015;Noack et al, 2014;Pédrot et al, 2015a;Tricca et al, 1999), in addition to REE complexation with organic and inorganic ligands Johannesson and Zhou, 1999;Millero, 1992).…”

“…Babechuk and Kamber, 2011;Lawrence et al, 2006a). A notable exception is that in waters bearing a significant abundance of Ba and very little Eu (i.e., a high Ba/Eu ratio), the final determination of Eu may be hindered from BaO + production (Lawrence et al, 2006); in these cases, Eu data are not reported. The procedural blank contribution to measured unknowns (plants, soil leaches and sampled waters) was typically well below 1% of the measured intensity, with the exception of the most trace element-depleted stream water (SR39), where the contribution of blanks reached a maximum of 10-15% for some analytes.…”

“…Thus, despite the well-established complexities of REE chemistry in soils (e.g., reflecting a combination of host mineral effects, pH controls, complexation) (Byrne and Sholkovitz, 1996;Deberdt et al, 2002;Elderfield et al, 1990;Lawrence and Kamber, 2006;Matsunaga et al, 2015;Noack et al, 2014;Pédrot et al, 2015a;Tricca et al, 1999) originating from igneous rock, sandstone, and shale tending to have higher REE contents than soils developed from loess and calcareous rock (Hu et al, 2006;Loell et al, 2011). In general, the high REE in the basalt-dominated soil indicates the most easily leachable REE fraction, which likely reflects the lack of poorly leachable REErich phases and the high abundance of Fe/Mn-oxy(hydroxides) with potentially adsorbed REE.…”

Estudo da abundância, proveniência e padrões de distribuição elementar em sedimentos de superfície e perfis sedimentares no Complexo Estuarino-Lagunar de Cananéia-Iguape, São Paulo - Brasil, com ênfase aos elementos terras raras e seu significado ambiental

“…Tais processos controlam a distribuição e o fluxo destes elementos através da retenção junto às margens oceânicas e sua exportação para o mar adjacente EDERFIELD, 1988;SHOLKOVITZ, 1995;ZIEBIS;FORSTER, 1996;HUETTEL et al, 1998;MOORE, 1999;SZYMCZAK, 2000;JAHNKE;KOSTKA, 2003;BUESSLER, 2004;HANSEL, 2005;LAWRENCE;KAMBER, 2006;HANNIGAN et al, 2010 KIM, 1990;SHOLKOVITZ, 1995;SCHIJF, 1996, RASMUSSEN et al, 1998KAMBER, 2006). Como resultado, temos uma diferença na distribuição relativa destas duas frações de ETR em ambos os compartimentos.…”