【摘要】 在ｐＨ３．５的ＨＡｃ－ＮａＡｃ缓冲介质中，有ＴｒｉｔｏｎＸ－１００存在下，Ｚｒ（Ⅳ）－２－（５－溴－吡啶偶氮）－５－二乙氨基苯酚（５－Ｂｒ－ＰＡＤＡＰ）－亚氨基二乙酸形成１∶２∶２的混配胶束有色配合物，配合物最大吸收波长为５９２ｎｍ，摩尔吸光系数为７．８×１０４Ｌ·ｍｏｌ－１·ｃｍ－１。锆量在０～１．２０ｍｇ／Ｌ范围符合比尔定律，方法用于矿石中微量锆的测定，结果满意。更多还原

【Abstract】 In acetic acid-sodium acetate buffer medium at pH 3.5, Zr(Ⅳ) reacts with 5-Br-PADAP and iminodiacetic acid to form a micellar mixed ligand complex with a molar ratio of 1∶2∶2 in the presence of TritonX-100. The muticomponent complex exhibits maximum absorption at 592 nm with a molar absorptivity of 7.8×10 4 L·mol -1 ·cm -1 . Beer’s law is obeyed in the range 0～1.20mg/L for zirconium. the proposed method has been applied to the determination of trace zirconium in ores with satisfactory results.更多还原