比色法测碘酸铜溶度积常数实验的改进

丁子都, 雷英杰, 梁云, 李襄宏, 王炎英, 黄涛

Improvement in Colorimetric Detection of the Solubility Product Constant of Copper(Ⅱ) Iodate

Zidu Ding, Yingjie Lei, Yun Liang, Xianghong Li, Yanying Wang, Tao Huang

表1 以甘氨酸和氨水分别为显色剂测定Cu(IO3)2溶度积的数据列表(20 ℃)

组别 A600 nm, 四氨合铜(Ⅱ) C(Cu2+)/(mol∙dm−3) Ksp A640 nm, 甘氨酸合铜(Ⅱ) C(Cu2+)/(mol∙dm−3) Ksp 1 0.065 1.3 × 10−3 7.0 × 10−8 0.058 1.2 × 10−3 5.5 × 10−8 2 0.086 1.7 × 10−3 1.6 × 10−7 0.079 1.7 × 10−3 1.6 × 10−7 3 0.089 1.7 × 10−3 1.6 × 10−7 0.084 1.8 × 10−3 1.9 × 10−7 4 0.108 2.1 × 10−3 3.0 × 10−7 0.097 2.1 × 10−3 3.0 × 10−7 5 0.117 2.3 × 10−3 3.9 × 10−7 0.108 2.3 × 10−3 3.9 × 10−7 6 0.124 2.4 × 10−3 4.4 × 10−7 0.114 2.4 × 10−3 4.4 × 10−7