速差动力学法同时测定铬和钼

Rate Differential Kinetic Method for the Simultaneous Determination of Chromium and Molybdenum

本文基于铬(VI)、铂(VI)与水杨基荧光酮(SAF)、溴化十六烷基三甲按(CTMAB)形成三元络合物的反应速度不同,提出用速差动力学光度法同时测定铬和钼的方法,用于合金钢中铬和钼的同时测定,结果满意.

A rate differential kinetic spectrophotometry was developed for the simultaneous determination of Cr and Mo, based on the differential rate of the formation of ternary complexes of the two metals with salicylfluorone-cetyltrimethylammonium in HAc-NaAc buffer medium at pH 6. 2. The linear range of the determination for Cr and Mo is 1-5 μg/25 mL and 1-7 μg/25 mL, respectively. The method has been applied to the simultaneous determination of Cr and Mo in steel with satisfactory results.