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Adsorption behavior of streptomycin on three typical soils in Inner Mongolia pastoral

机译:链霉素在内蒙古牧区三种典型土壤上的吸附行为

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The Batch equilibrium experiments were used to reveal streptomycin adsorption on three kinds of soils in Inner Mongolia pastoral, China. The effects of pH, soil organic content and microorganisms on adsorption were investigated. The results obtained were well-described by the Freundlich and Langmuir model, while fitted the linear model successfully. Different adsorption behaviors of streptomycin were observed in three tested soils. The Freundlich adsorption constant values (lgKf) ranged from 0.946 (Xilinhot) to 1.297 (Hohhot). The free energy of sorption values were ranged from −21.2 to −22.3 kJ/mol in this research, indicated that the adsorption pattern were physical adsorption. Streptomycin adsorption ability was in a significantly negative correlation to soil pH. Organic content and microorganisms in soils strengthened the adsorption of Streptomycin on soil.
机译:批平衡实验被用来揭示链霉素在中国内蒙古牧区的三种土壤上的吸附。研究了pH,土壤有机物含量和微生物对吸附的影响。 Freundlich和Langmuir模型很好地描述了获得的结果,同时成功地拟合了线性模型。在三种测试土壤中观察到链霉素的不同吸附行为。 Freundlich吸附常数(lgK f )介于0.946(西林浩特)至1.297(呼和浩特)之间。本研究中吸附值的自由能范围为-21.2至-22.3 kJ / mol,表明吸附模式为物理吸附。链霉素的吸附能力与土壤pH呈显着负相关。土壤中的有机物和微生物增强了链霉素在土壤上的吸附。

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