Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Trace Metals in Phosphate Fertilizers Used in Eastern Mediterranean Countries
Phosphate fertilizers represent a major source of trace metal contaminants in agricultural soils. To predict the inputs and the fate of trace metals in soils of the eastern Mediterranean region, a speciation study was conducted using a total of 44 phosphate fertilizers commercialized in the area. The contents in major anions and potentially toxic metals (Zn, Pb, Cd, and Cu) were determined using atomic absorption spectrometry (AAS) and X‐ray fluorescence spectrometry (XRF). The nature of mineral phases in the fertilizer was characterized using X‐ray diffraction and Fourier transform infrared spectrometry. The results show that sulfates are the main Cd‐bearing phases when present in the P‐fertilizer. The contents in Zn and Pb were linearly related, whereas the levels of Sb, Ag, Pd, Nb, Mo, and P2O5 were strongly correlated to each other. The annual average inputs of Zn, Cu, Pb, and Cd were calculated to be 922, 124, 26, and 6 g/ha per year, respectively. Even though such inputs comply with the maximal metals concentrations authorized in temperate countries, an accumulation of those metals in the typical arid and alkaline soils of the eastern Mediterranean countries is expected.
Trace Metals in Phosphate Fertilizers Used in Eastern Mediterranean Countries
Phosphate fertilizers represent a major source of trace metal contaminants in agricultural soils. To predict the inputs and the fate of trace metals in soils of the eastern Mediterranean region, a speciation study was conducted using a total of 44 phosphate fertilizers commercialized in the area. The contents in major anions and potentially toxic metals (Zn, Pb, Cd, and Cu) were determined using atomic absorption spectrometry (AAS) and X‐ray fluorescence spectrometry (XRF). The nature of mineral phases in the fertilizer was characterized using X‐ray diffraction and Fourier transform infrared spectrometry. The results show that sulfates are the main Cd‐bearing phases when present in the P‐fertilizer. The contents in Zn and Pb were linearly related, whereas the levels of Sb, Ag, Pd, Nb, Mo, and P2O5 were strongly correlated to each other. The annual average inputs of Zn, Cu, Pb, and Cd were calculated to be 922, 124, 26, and 6 g/ha per year, respectively. Even though such inputs comply with the maximal metals concentrations authorized in temperate countries, an accumulation of those metals in the typical arid and alkaline soils of the eastern Mediterranean countries is expected.
Trace Metals in Phosphate Fertilizers Used in Eastern Mediterranean Countries
Azzi, Valérie (Autor:in) / Kazpard, Véronique (Autor:in) / Lartiges, Bruno (Autor:in) / Kobeissi, Ahmad (Autor:in) / Kanso, Ali (Autor:in) / El Samrani, Antoine G. (Autor:in)
01.01.2017
9 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Trace metals in seagrass, algae and molluscs from an uncontaminated area in the Mediterranean
| Online Contents | 2001