Showing papers in "Applied Geochemistry in 2010"

TL;DR: In this paper, the authors used EEM-PARAFAC to trace and differentiate dissolved organic matter (DOM) from diverse sources across both horizontal and vertical flow profiles, and as such could be a convenient and useful tool for the better understanding of hydrological interactions and carbon biogeochemical cycling.

TL;DR: In this article, the geochemistry and origin of natural gas and formation waters in Devonian age organic-rich shales and reservoir sandstones across the northern Appalachian Basin margin (western New York, eastern Ohio, northwestern Pennsylvania, and eastern Kentucky) were investigated.

TL;DR: In this paper, the relationship between soil Cd, Cu, Pb and Zn contaminants and the location and activities of the Pb-Zn-Ag and Cu mines at Mount Isa, Queensland, Australia is investigated.

TL;DR: In this article, the first spatial distribution maps for the eight trace elements identified as priority contaminants in aquatic systems (i.e., Cd, Cr, Cu, Hg, Ni, Pb and Zn) in surface sediments of the Gironde Estuary (SW France) are presented.

TL;DR: Wang et al. as mentioned in this paper investigated trace elements in wet precipitation over the Tibetan Plateau (TP), a total of 79 event-based precipitation samples were collected from September 2007 to September 2008 at Nam Co Station.

TL;DR: In this article, the dynamics of trace elements from phosphate rock ore to the environment in a phosphoric acid plant located in SW Spain and the impact of phosphogypsum wastes were investigated through total digestion and BCR-sequential extraction.

TL;DR: In this paper, the authors performed solubility experiments on nanocrystalline scorodite and amorphous ferric arsenate and found that the dissolution rate of nanocrystine scordite is 2.64% at pH 1 and 3.5%.

TL;DR: In this paper, the first results are reported for both Li and B isotope ratios in rainwater samples collected over a long time period (i.e. monthly rainfall events over 1 a) at a national scale (from coastal and inland locations).

TL;DR: The distribution of Sb in a variety of sample materials, including soils, plants and surface water, was studied at different scales, from continental to local, combining published data sets with the aim of delineating the impact and relative importance of geogenic vs anthropogenic Sb sources as mentioned in this paper.

TL;DR: In this article, the main advances in the study of Hg stable isotopes with particular emphasis placed on a brief explanation of the Hg isotope analytical techniques, possible Hg-isotope fractionation mechanisms observed in both natural and experimental processes, and the application prospects of the stable isotope in environmental geosciences.

TL;DR: In this article, the authors compared the concentrations of 57 chemical elements (Ag, Al, As, B, Ba, Be, Bi, Ca, Cd, Ce, Co, Cr, Cs, Cu, Dy, Er, Eu, Fe, Ga, Gd, Ge, Hf, Ho, I, K, La, Li, Lu, Mg, Mn, Mo, Na, Nb, Nd, Ni, Pb, Pr, Rb, Sb, Se, Sm, Sn, Sr, Ta, Tb,

TL;DR: In this article, the authors describe the groundwater flow pattern in the northern portion of GAS (Guarani Aquifer System) is characterized by the existence of four regional recharge areas located in Sao Paulo, Mato Grosso do Sul and Goias states.

TL;DR: In this paper, the abundances of polycyclic aromatic hydrocarbons (PAHs Table 1, I-XXI ) have been measured throughout three Permian/Triassic (P/Tr) sections from Meishan (South China), Kap Stosch area (East Greenland) and Peace River Basin (Western Canada).

TL;DR: A detailed geochemical study was conducted at the inactive Zn-Pb mine of Santa Lucia, in western Cuba as mentioned in this paper, which was characterized by high total concentrations of potentially toxic elements (PTE), with average values of 17.4% Fe, 5.47% Ba, 2.27% Pb, 0.83% Zn, 1724 kg As and 811 kg Cu.

TL;DR: The long-term impact of irrigation on a Mediterranean sandy soil irrigated with treated wastewater (TWW) since 1980 was evaluated in this paper, where the main soil properties (CEC, pH, size distribution, exchangeable cations and chloride, hydraulic conductivity) as well as the organic matter and Cu, Cr and Pb speciation in an irrigated soil and a non-irrigated control soil at various soil depths were monitored and compared during a 2-year experiment.

TL;DR: In this paper, the authors studied the sources and mobilization process responsible for As-enrichment in part of the Gangetic plain (Barasat, West Bengal, India).

TL;DR: Aqueous solutions equilibrated with supercritical CO(2) (150 degrees C and total pressure of 150 bar) were investigated in order to characterize their respective conditions of carbonation.

TL;DR: In this paper, the authors compared major ion and isotope geochemistry data for produced fluids or gases from two major coal deposits in Western Canada (Mannville Formation and the Horseshoe Canyon/Belly River Group) with similar data collected for shallow groundwater in south-central Alberta.

TL;DR: The origin of combustible gases in groundwater from glacial-outwash and fractured-bedrock aquifers was investigated in northern Tioga County, Pennsylvania as discussed by the authors, where thermogenic methane (CH4) and ethane (C2H6) and microbial CH4 were found.

TL;DR: In this paper, the relationship between soil gas distribution and tectonic systems in the vicinity of the Hsinhua Fault zone in the Tainan area of Southern Taiwan was investigated.

TL;DR: In this article, the authors measured the adsorption of cationic and anionic trace elements onto the authigenic Fe oxyhydroxides and natural organic matter in oxic sediments.

TL;DR: In this article, the chemical and isotopic compositions of the Xijiang River were determined during the high-flow season in order to understand the chemical weathering processes, associated CO2 consumption and anthropogenic influences within the carbonate-dominated basin.

TL;DR: In this paper, the authors investigate temporal trends and controlling factors of As and V in running waters throughout Sweden and find that the concentration of As is highly determined by concentrations of colloidal or particulate Fe.

TL;DR: In this paper, the authors analyzed slag from the former Hegeler Zn-smelting facility in Illinois and found that the dominant metal is Zn with 28.4 wt.% in the Znrich material and between 212 and 14,900 mg/kg in the other slags.

TL;DR: In this article, trace elements in the kerogen fraction of hydrocarbon source rock samples from two wells obtained from the Cretaceous units of the Orange Basin, South Africa were determined using X-ray fluorescence spectrometry, in order to determine their distribution and geochemical significances.

TL;DR: In this article, the authors investigated the effect of mechanical activation on the Mg extraction potential of olivine in 0.01 M HCl solution at room temperature and pressure and found that approximately 30-40% of each sample was dissolved and water samples were taken at the end of each experiment.

TL;DR: In this paper, the removal of Mn(II) from coal mine drainage by chemical addition/active treatment can significantly increase treatment costs, and passive treatment for Mn removal involves promotion of biological oxidative precipitation of manganese oxides (MnO{sub x}).

TL;DR: In this article, an extensive period of aquifer flushing allows observation of water quality changes under two operating scenarios: (1) separate wells for injection and recovery, representing Aquifer Storage and Recovery (ASR), and (2) a single well for injection/recovery, representing aquifer storage and recovery.

TL;DR: In this paper, a meta-analysis of 173 rate measurements from 21 publications was used to develop rate laws for chalcopyrite dissolution under environmentally relevant conditions, where the surface area is expressed on a geometric basis.

TL;DR: In this paper, a refined sequential extraction technique was used for Hg in soil and sediment, allowing identification of the following conceptual Hg fractions: elemental Hg, exchangeable, strongly-bound and organically-bound Hg.