硫氰酸盐光度法测定铼酸铵中的钼

TO MEASURE MOLYBDENUM CONTENT IN RHENATE AMMONIUM WITH THIOCYANATE PHOTOMETRIC METHOD

采用王水与浓硫酸共同溶样 ,除去主元素铼的的干扰 ,调节pH至强酸性 ,加入还原剂和显色剂混合液 ,至显色反应完全 ,反应物在 44 0nm处有最大吸收峰 ,表观摩尔吸光系数为 1.10× 10 4 L .mo1-1.cm-1,钼含量在 0- 5 μm/ml范围内服从比尔定律。

To use the mixed aqua regia and sulfuric acid, to remove the disturbance of main element rhenium, to adjust pH volume to strong acidity, to charge mixed reductant and coloration agent, to complete coloration reaction, at 440nm position the reactant has the maximum absorption peak; apparent mol absorbancy is 1.10×10L.mol.cm, the molybdenum content of 0~5 ?m/ml obeys BIER LAW.