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- W2044347263 abstract "We estimated the levels and distributions of Cr, Ni, and Cu in the soils of Barcelona Province (NE Spain). This province covers 7731 km2. The geology in this area is varied: granitoides and Paleozoic shales are predominant in the SE-E and Mesozoic and Tertiary limestones, dolomites, marlstones, gypsum, and sandstones in the remainder of the province. In all, 316 topsoil samples (0–20 cm) were collected at 5 km intervals on a regular grid. General soil properties were analysed by standard methods and Aqua regia digests of Cr, Ni, and Cu were determined by Inductively Coupled Plasma Spectrometry. Exploratory Data Analysis (EDA) was used to detect unusual data behaviour and obtain a robust summary of the dataset. We compared the behaviour of Cr, Ni, and Cu in different data sub-sets (by districts, texture, pH, organic carbon, CaCO3). Some results are: Cr mg kg− 1 min 2.5, max 250, med 25.8, Ni mg kg− 1 min 2.3, max 186, med 19.4, Cu mg kg− 1 min 2.5, max 1153, med 16.7. The maximum contents of Ni, Cr, and Cu versus pH are reached at pH 5–5.5. The highest concentrations of Cu and Cr are appreciated in the Barcelona area and Ni in Bages district. This is the first work that combines EDA techniques and pedogeochemical mapping of Cr, Ni, and Cu in the topsoils of Barcelona Province (Catalonia, Spain). The combination of EDA and pedogeochemical mapping is a useful tool for estimating the local background of potentially toxic elements (PTE), which is essential for environmental regulation." @default.
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- W2044347263 date "2008-02-01" @default.
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- W2044347263 title "Pedogeochemical mapping of Cr, Ni, and Cu in soils of the Barcelona Province (Catalonia, Spain): Relationships with soil physico-chemical characteristics" @default.
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- W2044347263 doi "https://doi.org/10.1016/j.gexplo.2007.03.005" @default.
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