AGH University of Science and Technology, Faculty of Materials Science and Ceramics, Mickiewicza 30, 30-059 Krakow, Poland.
Spectrochim Acta A Mol Biomol Spectrosc. 2011 Aug 15;79(4):728-32. doi: 10.1016/j.saa.2010.08.045. Epub 2010 Sep 27.
Glasses of the SiO(2)-P(2)O(5)-K(2)O-MgO-CaO-Fe(2)O(3) system acting as slow release fertilizers were synthesized by the melt-quenching technique. The influence of iron addition on the structure of glasses was evaluated by FTIR spectroscopy (with spectra decomposition) and (57)Fe Mössbauer spectroscopy. The chemical activity of glasses in the 2 mass% citric acid solutions was measured by the ICP-AES method. It has been found that the formation of domains with structure similar to phosphates with chemically stable P-O-Fe(3+) and P-O-Fe(2+) bonds decreases the glass solubility under conditions simulating the soil environment.
SiO(2)-P(2)O(5)-K(2)O-MgO-CaO-Fe(2)O(3)系统的玻璃作为缓释肥料，通过熔融淬火技术合成。通过傅里叶变换红外光谱（带光谱分解）和（57）Fe Mössbauer 光谱评估铁添加对玻璃结构的影响。通过 ICP-AES 法测量玻璃在 2%质量柠檬酸溶液中的化学活性。发现形成具有化学稳定的 P-O-Fe(3+)和 P-O-Fe(2+)键的磷酸盐类似结构域，降低了在模拟土壤环境条件下的玻璃溶解度。
