【摘要】 在硫酸介质中 ,以Cu2 + 作催化剂 ,用抗坏血酸还原Mo (Ⅵ )为Mo (Ⅴ ) ,Mo (Ⅴ )与硫氰酸盐生成桔红色络合物进行测定。有色络合物λmaλ=46 0nm ,ε=1 2× 10 4 L·mol-1·cm-1,钼量在 0～ 12 0 μg/ 2 5mL范围内符合比尔定律。方法用于重点实验室细菌浸出液中微量钼的测定 ,结果满意。更多还原

【Abstract】 In sulfuric acid medium,the acorbic acid reduces Mo(Ⅵ) into Mo(Ⅴ) in existance of Cu 2+ as catalyst.Mo(Ⅴ) reacts with thiocyanate and forms an orange complex with λ=460 nm,ε=1 2×10 4 mol -1 ·cm -1 .The conthent of molybdenum is in accordance with Bill law when the concentration is within the range of 0～120 μg/25 ml.This method has been succesfully used in our key laboratory for determination of micro molybdenum in bio-leaching solution.更多还原