【摘要】 本文研究了在乙醇存在下,对氟偶氮氯膦（CPApF）与稀土元素的显色反应。发现在盐酸介质中,加入40～60％的乙醇可以提高测定稀土元素的灵敏度,此时对氟偶氮氯膦试剂与15种稀土离子形成α型配合物,配合物的最大吸收峰在652-654nm,表观摩尔吸光系数为6.8—9.6×10⁴L·mol^-1·cm^-1本文对乙醇的增敏作用机理作了初步探讨。更多还原

【Abstract】 This paper described the colour reactions of p-Fluorochlorophosphonazo (CPApF) with 15 rare earth ions in the presence of ethanol. By adding ethanol into the hydrochloric medium, the sensitivity of colour reactions in which the rare earth elements with CPApF formed α-type complexes was increased.更多还原