Showing papers in "Journal of Geochemical Exploration in 2014"

TL;DR: Zhang et al. as mentioned in this paper conducted an environmental geochemical mapping with high-density soil sampling to determine the spatial distribution, possible sources and potential ecological risk of heavy metals at a former chemical industry area in Beijing.

TL;DR: Wang et al. as discussed by the authors provided an up-to-date assessment of the trace metal contamination (As, Cd, Cr, Cu, Sb, Se, and Zn) in urban soils of 31 metropolises in China.

TL;DR: Wang et al. as discussed by the authors investigated the effects of mining activities on the agricultural environmental quality, four representative paddy fields distributed at different towns (HSG, SNJ, NT and THJ) of Y County, northern Hunan Province, were investigated.

TL;DR: Wang et al. as discussed by the authors analyzed 186 groundwater samples collected from the Jianghan Plain between the Yangtze and Han rivers to characterize groundwater chemistry and evaluate the factors controlling arsenic concentration and distribution in the plain.

TL;DR: In this article, the authors compare and contrast ground water and tap water isoscapes for southern Africa, and consider how well global models of precipitation isotopes capture isotopic variation across South Africa.

TL;DR: In this article, the authors studied the annual inputs of heavy metals (As, Cd, Cr, Hg, Cu, Pb and Zn) to agricultural soils in the Yangtze River delta, China in 2007-2009 have been studied.

TL;DR: It was found that at circa 1600 μg g − 1 Pb HCl 0.5 M extractable concentration in soil two native species, Tagetes minuta L. and Bidens pilosa L. have a considerable phytoremediation potential for lead polluted soils.

TL;DR: The National Multi-Purpose Regional Geochemical Survey (NMPRGS) has been carried out in the agriculturally and industrially developed regions of China, covering mainly the plains of the eastern and central parts of the country.

TL;DR: This special issue of the Journal of Geochemical Exploration focuses on the correct statistical analysis of compositional data, and illustrates that several paths can be followed to understand how geochemical processes work.

TL;DR: Wang et al. as mentioned in this paper used the continuous restricted Boltzmann machine (CRBM) for multivariate geochemical anomaly identification. But the results showed that the trained CRBM can differentiate the small probability samples from the training sample population.

TL;DR: In this paper, the removal of some heavy metal ions, including Pb, Zn, and Cd(II), using Maghemite (γ-Fe2O3) nanoparticles as adsorbent was studied in an aqueous system.

TL;DR: In this article, the average concentrations of chemical elements in the soils of more than 300 cities and settlements in Europe, Asia, Africa, Australia, and America were given for the first time.

TL;DR: In this article, the authors measured twenty-one trace elements in 57 river and 20 well water samples collected in 2011 to define the spatial variability, sources, and the quality of natural water within the Tarim River Basin (TRB), one of the driest arid zones on the earth.

TL;DR: The results demonstrate that HA exerted a protective effect possibly through signaling mechanism independent of ABA, regulation of OsTIPs genes and potentially initiated by chemical and physical interactions between HA and the plant root system.

TL;DR: In this article, the authors used principal component analysis, analysis of variance, linear discriminant analysis and spatial analysis with ordinary kriging to predict lake sediment geochemical data from lakes across the Melville Peninsula in Nunavut, Canada.

TL;DR: In this paper, the Kombat tailings dam, surrounded by agricultural lands, has been exposed to water and wind erosion over a long period of time, and a sequential extraction procedure was used to determine binding mechanisms involved in the retention of metals in tailings and soils under the influence of tailings, which indicate the trace metals bioavailability, the threat to groundwater pollution, as well as the dominant type of dispersion.

TL;DR: In this paper, the particle size fractions associated Cr, As, Cd and Pb were characterized and their leachability was analyzed as well, and the pollution of heavy metals in the arable soils was not severe except Cr (204 ǫ kg−1) in Haikou.

TL;DR: A field trial was carried out to assess the effectiveness of organic amendments (COW: cow slurry; POULTRY: poultry manure; PAPER: paper mill sludge mixed with poultry manure) for the aided phytostabilization of vegetated and non-vegetated sites of an abandoned Pb/Zn contaminated mine as mentioned in this paper.

TL;DR: In this article, the authors used the Self-Organizing Map (SOM) approach to classify and characterize the groundwater in terms of hydrochemistry and quality on a regional scale.

TL;DR: Zhou et al. as mentioned in this paper examined groundwater inorganic contamination around a municipal landfill site in Zhoukou city, Henan province, China, and identified TDS, Cl-, NH4+, Fe and Mn concentrations as the main indicators of groundwater pollution caused by landfill leachate percolation.

TL;DR: In this article, a phytoremediation trial was made to study the use of different plant species to extract Co and Cr out of contaminated soils, and five plant species tested in this study namely, Panikum ( Panicum antidotal), Napier grass ( Pennisetum purpureum ), Squash ( Cucurbita pepo ), Cotton ( Gossypium hirsutum ), and Sunflower ( Helianthus annuus ) were grown on two different polluted soil types (Mostorud Clayey soil, irrigated with contaminated

TL;DR: It is proposed that metal speciation plays an important role in Pb toxicity to V. faba pigment and organic ligands vary greatly in terms of their ability to modify Pb phytoaccumulation and toxicity.

TL;DR: In this article, the presence of intercalated zeolitic clay within the aquifer sand is the major source of fluoride contamination in groundwater in Birbhum district, West Bengal, India.

TL;DR: In this article, the fluxes of the soil heavy metal input/output pathways (e.g., atmospheric deposition, irrigation water, fertilization, crop or pasture harvesting, seepage water, and surface water) were observed and evaluated on the southern Song-nen Plain in Heilongjiang Province.

TL;DR: Wang et al. as mentioned in this paper conducted an extensive survey in the surface sediments of Nansi Lake to investigate the spatial distribution, source identification as well as pollution assessment of metal contents.

TL;DR: In this paper, the results showed differences in the concentrations and percentages of the metals extracted from the five chemical phases among the dusts studied, attributed to the sources of metals, total metal concentration, dust physical and chemical properties, and the specific affinity of some metals for some solid phases.

TL;DR: In this paper, the robust principal component analysis (RPCA) method and spectrum-area (S-A) fractal model were applied to multi-element data from 2042 stream sediment samples collected in this region.

TL;DR: In this paper, the authors compare the natural background levels derived for As, F, Mn and Fe in a volcanic-sedimentary aquifer in Central Italy, using probability plots and pre-selection methods.

TL;DR: In this article, the trace element composition of magnetite is determined primarily by the geological environment at the time of its formation, which makes magnetite a useful indicator mineral in the exploration of ore deposits.

TL;DR: In this paper, the identification of potassic, phyllic and propylitic alteration zones in the hypogene zone of the Sungun Cu porphyry deposit (NW Iran) based on drillcore data, utilizing sequential geostatistical simulation (SGS) and concentration-volume (C-V) fractal model.