催化褪色光度法测定痕量钼(Ⅵ)  

On the Determination of Trace Molybdenum by Catalyzed Discolouring Photometering Method

作　　者：陈翠莲 詹心琪 王俊霞 

出　　处：《漳州职业技术学院学报》1999年第3期94-95,共2页Journal of Zhangzhou Institute of Technology

摘　　要：籍助活化剂磺基水杨酸,钼(Ⅵ)催化过氧化氢氧化碘化钾,其产物I_3^-离子氧化指示剂罗丹明B,拟定了测定痕量钼的新催化褪色光度法。方法检出限2.05×10^(10)g/ml,相对标准偏差RSD为0.95％(n=9),线性范围0～0.12ug/25ml。可用于水样中痕量钼的测定。测定结果令人满意。A new catalytic spectrophotometric method for the determination of trace amount of Mo (Ⅵ) has been developed . It is based on rbodamine B as an indicator and the reaction between hydrogen peroxide and iodide, catalyzed by molybdenun (Ⅵ ) being monitored spectroph-tometrically at 556.0nm, The presence of solfosalicylic acid can enhance the sensitivity and selectively. The calibration grasps obtained are linear in the range of 0 -0.12ug/ml molybdenum.The dectection limit is 2.05 × 10-10 g/ml. the relative standand diviation is 0.95% . The method is used to apply the determination molybdenum (Ⅵ) in riuer water.

关 键 词：催化褪色光度法 罗丹明B 钼 

分 类 号：O657.3[理学—分析化学]