【摘要】 研究了新显色剂5 (H 酸偶氮) 1 苯基 3 甲基吡唑啉酮(HAPMP)与铀 的显色反应,在pH4 0的HAc-NaAc缓冲介质中,新试剂与铀 形成1∶1的粉红色铬合物,最大吸收峰位于540nm处,表观摩尔吸光系数为6 31×104,在25mL溶液中铀质量在0～35μg范围内符合比尔定律,方法用于合成样品中微量铀的测定,结果令人满意。更多还原

【Abstract】 The color reaction of uranium*$with a new reagent 5-（H-acidazo）-1-phenyl-3-methypyrazolone（HAPMP） has been studied.In a buffer solution at pH 4.0,uranium*$ reacts with HAPMP to form a stable 1∶1 red complex.The complex exhibits a maximum absorption at 540 nm with an apparent absorptivity of 6.31×10⁴ L·mol^-1·cm^-1.Beer’s law is obeyed in the range of 0-35 μg/25 mL for U*$.The method has been applied to the determination of trace uranium in ores and rocks with satisfactory results .更多还原