某多金属矿中钼的空气-乙炔焰原子吸收分光光度法测定

STUDIES ON THE DETERMINATION OF MOL YBDENUM IN MULTI-METAL SAMPLES BY AIR-ACETYLENE FLAME ATOMIC ABSORPTION SPECTROPHOTOMETRY

在日立Ｚ－８０００原子吸收分光光度计上，确定了钼的最佳测定条件．考察了多种干扰离子的影响及其消除方法，钼的测定线性范围宽（０～０．２ｇ／Ｌ）．结合王水或饱和了氯酸钾的硝酸溶解样品，成功地测定了含钼量在０．０１％～５０％的某多金属矿样品，与传统的硫氰酸盐比色法及铜酸铅重量法结果对照，符合得很好．该法具有快速、简便及更适合分析高含量样品的特点．

Optimization of analytical conditions of molybdenum is studied on Hitach Model Z-8000atomic absorption spectrophotometer. The influences of other ions are also studied and dis-pelled successfully．There is a linear relationship between absorbance and the concentrationof molybdenum in a wide range，0～0．2g/L. The method is successfully applied to the sam-ples in which the contents of molybdenum change from 0．01％to 50％. It is simple andquick，and especially well used to determine high contents of molybdenum.