【摘要】 在酸度为 0 .8m ol/ L 条件下 ,以 DBS-偶氮胂为显色剂并采用双波长方法消除钙的干扰 ,测定了土壤中可溶态轻稀土含量。本法灵敏度高 ,方法简便 ,钙的允许量高 ,可达 30 mg/ 10 m L。用本法对几种样品进行了测量 ,结果满意更多还原

【Abstract】 The determination of the content of the soluble light rare earths in the soil samples was studied.Double wavelength method was used to eliminate the interference of calcium and determine the soluble light rare earth content in the soil at 0.8mol/L HCl and DBS-Arsenazo as color reagent.This method is simple and has high sensibility and selectivity (high calcium content up to 30mg/10mL).Some samples were determined by this method and the results were satisfactory.更多还原