The influence of anthropogenically increased pH on the content and the mobility of nickel in arable soils in the surroundings of “Małogoszcz” cement plant
2013
Jaworska, Hanna | Bartkowiak, Agata | Różański, Szymon
The aim of the conducted research was the evaluation of the influence of increased pH on the content and mobility of nickel in arable soils in the surroundings of Małogoszcz Cement Plant. The physico-chemical properties of the investigated soils were determined by the methods commonly used in soil laboratories. The total content of Ni was determined after mineralization in the mixture of HF and HClO₄ acids, and the content of forms available for plants, after the extraction with DTPA solution, using ASA method. The investigated soils are characterized as loamy sands or sands (PTG 2008). These soils have the content of C-organic in the range of 10.3.24.2 g·kg⁻¹ in the surface horizons and 8.3.20.3 g·kg⁻¹ in the subsurface horizons. The pH values allow to classify these soils as alkaline. In all of the investigated soils calcium carbonate occurs. The values of total content of nickel were in the range of 1.47.2.82 mg·kg⁻¹ in surface horizons and 1.80.2.45 mg·kg⁻¹ in subsurface horizons, which allows to classify these soils as soil with natural nickel content. The content of Ni-DTPA were in the range of 0.06.0.26 mg·kg.1. The sequential analysis of the obtained results indicates on significant statistically positive correlation between the total content of Ni and C-organic, which has the value of 0.648143 and between the content of Ni-DTPA and the content of fraction with Ø<0.002 mm, with the value of 0.581113 on p=0.05.
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