天然沸石粉阳离子吸附性能分析方法的探讨  

DISCUSSION ON DETERMINATION OF EXCHANGEABLE BASIC CATIONS AND CATION EXCHANGE CAPACITY OF ZEOLITIC ROCK POWDER

作　　者：卢文洲[1] 林初夏[1] 刘勇[1] 

机构地区：[1]华南农业大学资源环境学院,广州510642

出　　处：《化学分析计量》2005年第3期12-14,共3页Chemical Analysis And Meterage

基　　金：美国Expressway InternationalLtd.资助项目(4200-H03025);华南农业大学校长基金项目(2003S015)

摘　　要：通过比较不同浓度的NH4Ac溶液对天然沸石粉所吸附的碱金属和碱土金属离子多次连续提取的效果,将由交换性K+、Na+、Ca2+和Mg2+加和所获得的阳离子交换量与由常规土壤阳离子交换量测定法获得的阳离子交换量进行比较,发现常规的土壤分析方法不适于测定天然沸石粉所吸附的交换性K+、Na+、Ca2+和Mg2+及阳离子交换量。建议用K+、Na+、Ca2+和Mg2+5次提取总量分别作为天然沸石粉所吸附的交换性K+、Na+、Ca2+和Mg2+的估算值,并把其提取量加和作为沸石粉阳离子交换量的估算值。An experiment was conducted to compare the effects of varying concentrations of NH_4Ac solutions on the successive extraction of exchangeable K +, Na +, Ca 2+ and Mg 2+ in zeolitic rock powder. The method of the cumulative basic cations sum to get cation exchange capacity (CEC) was compared with the traditional method for soil CEC measurement. The results suggested that the traditional soil analytical methods were not suitable for the determination of exchangeable basic cations and cation exchange capacity of zeolitic rock powder. Based on the current experimental results, a new analytical procedure was proposed for the measurements of exchangeable basic cations and cation exchange capacity of the zeolitic rock powder.

关 键 词：沸石粉 性能分析方法 天然 离子吸附 Ca^2+ 土壤阳离子交换量 MG^2+ NA^+ 碱土金属离子 K^+ 交换性 连续提取 土壤分析 估算值 碱金属 测定法 提取量 行比 

分 类 号：S816.71[农业科学—饲料科学] TP31[农业科学—畜牧学]