【摘要】 冠醚ＤＰＤＢ－１８－Ｃ－６与钾显色反应的分光光度法研究黄青瑜，营豫梅，谢明贵（四川联合大学化学系成都６１００６４）关键词钾，二苦胺基二苯并－１８－冠－６，分光光度法目前碱金属的光度测定，较为广泛的是借助阴离子染料生成三元配合物的显色方法［１－２］。近...更多还原

【Abstract】 The colour reaction of cis-dipicryldibenzo-18-crown-6 with potassium in the medium of pH 8.5 was studied. The maximum absorption of the complex is at 460nm. Following Beer’s law for potassiumis in the range of 0-8.0μg/5. 4mL The apparent molar absorptivity at 460nm is 9.4×10￣3L· mol￣(-1)·cm￣(-1) .The molar ratio of potassium to the reagent in the complex is 1: 1.更多还原