土壤及农作物中稀土含量的分析测定  

Determination of Lanthanide in Soil and Plants

作　　者：吕海涛 孙芬芳[1] 丁鲁军[1] 

机构地区：[1]莱阳农学院基础部,山东莱阳265200

出　　处：《莱阳农学院学报》2001年第1期41-44,共4页Journal of Laiyang Agricultural College

摘　　要：利用螯合离子色谱法 ,在线有选择性地将样品中的阴离子、碱金属、碱土金属、铝、铁及其它过渡金属离子除去 ,同时浓缩富集待测的痕量稀土离子。再用草酸和二甘醇酸的梯度淋洗体系 ,将 1 4种稀土金属离子分离 ,检测限可达ngml- 1级 。In this paper, the contents of trace lanthanides in soil and plants were determined by chelation ion chromatography. Lanthanides were concentrated on-line while eliminating bulk quantities of alkali, alkaline earth metal, aluminum, iron and other transition metals from sample matrice. Then, they were separated by a concentration gradient of oxalic acid and diglycolic acid. The method detection limits (signal-to-noise ratio 3∶1) were at ng ml -1 levels.

关 键 词：螯合离子色谱法 稀土 土壤 农作物 含量测定 

分 类 号：S153.61[农业科学—土壤学] S151.95[农业科学—农业基础科学]