title: Heavy metal pollution in topsoils near a cement plant: the role of organic matter and distance to the source to predict total and hcl-extracted heavy metal concentrations.
abstract: Heavy metal and trace element concentrations were examined in topsoils to evaluate a cement plant and an industrial waste incinerator as pollution sources. As, Ba, Ca, Ce, Co, Cr, Cs, Eu, Fe, Hf, K, La, Lu, Na, Nd, Rb, Sb, Sc, Se, Sm, Ta, Tb, Th, U, Yb and Zn were measured by Neutron Activation Analysis (NAA), and Co, Cu, Fe, Ni, Pb and Zn by a 0.5M-hydrochloric extraction technique using an Atomic Absorption Spectrophotometer (AAS). The Cr total concentration and HCl-extracted Co and Mn were possibly related to wind transportation from an industrial area in the north of Córdoba city (Argentina). Cu, Pb and Zn in partial HCl extraction were influenced by the cement plant and the industrial area in the north of Córdoba city. The mean total Ba concentration was above the residential and agricultural land use limits stated in national and international legislation and was related to the distance to the cement plant. The concentrations of HCl-extracted heavy metals could be predicted by the organic matter percentage and the distance to the cement plant (with R(2) values of 0.50-0.74). The Ca total concentration was seen to have little influence whereas the organic matter percentage strongly affected HCl-extracted heavy metals according to the correlation analysis and multiple regression models. According to soil quality guidelines for environmental health, the human and wildlife populations in Yocsina might be experiencing toxic Ba and Cr effects.
authors: Instituto Multidisciplinario de Biología Vegetal (IMBIV), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina.
authors: Gonzalo M A
authors: GM
authors: Bermudez
authors: Mónica
authors: M
authors: Moreno
authors: Rodrigo
authors: R
authors: Invernizzi
authors: Rita
authors: R
authors: Plá
authors: María Luisa
authors: ML
authors: Pignata
mesh_terms: D001118:Argentina; D006801:Humans; D007220:Industrial Waste / Q000009:adverse effects*; D007221:Industry / Q000639:trends*; D019216:Metals, Heavy / Q000032:analysis* / Q000633:toxicity; D011237:Predictive Value of Tests; D012987:Soil; D012989:Soil Pollutants / Q000032:analysis* / Q000633:toxicity; D014131:Trace Elements / Q000032:analysis* / Q000633:toxicity
chemical_list: D007220:Industrial Waste; D019216:Metals, Heavy; D012987:Soil; D012989:Soil Pollutants; D014131:Trace Elements