摘要
本文介绍了区分强酸性矿质土壤溶液中无机单核铝离子的形态的氟离子加入法。向土壤溶液中加入一已知量的氟标准溶液,再用氟离子电极测定和区分溶液中无机单核铝的形态。实验结果表明,对有机质含量很少的强酸性矿质土壤溶液,用该方法测定的不同形态无机单核铝的相对偏差<5％,说明该方法的测定结果可靠。从几种红壤的测定结果看,在强酸性土壤溶液中,Al^(3+)和AlF^(2+)是主要的无机单核形态。
A addition method of fluoride used to characterize inorganic monomeric aluminum species in strongly acid mineral soil solution was descnded in this article. A small volume of fluoride solution was added into soil solution, then the fluoride electrode procedure Was used to characterize inorganic monomeric aluminum species in the solution. The results indicated that the relative deviation of this method for mineral soil solution containing less organic matter is lower than5 % , so the results odtained by this method are reliadle. The results odtained from some red soils indicated that Al3+ and AlF2+ Were predomient inorganic monomeric aluminum species in mineral soil solution with strong acid.
出处
《化学传感器》
1996年第3期179-184,共6页
Chemical Sensors
基金
国家自然科学基金
课题编号:49401009
49471041
关键词
氟离子加入法
强酸性
土壤
铝离子
离子选择电极
fluoride addition method. fluoride procedure, inorganic monomeric aluminum species. strongly acid soil
