引用本文:
丁子都, 雷英杰, 梁云, 李襄宏, 王炎英, 黄涛. 比色法测碘酸铜溶度积常数实验的改进[J]. 大学化学,
2023, 38(12): 257-261.
doi:
10.3866/PKU.DXHX202305023
Citation: Zidu Ding, Yingjie Lei, Yun Liang, Xianghong Li, Yanying Wang, Tao Huang. Improvement in Colorimetric Detection of the Solubility Product Constant of Copper(II) Iodate[J]. University Chemistry, 2023, 38(12): 257-261. doi: 10.3866/PKU.DXHX202305023
Citation: Zidu Ding, Yingjie Lei, Yun Liang, Xianghong Li, Yanying Wang, Tao Huang. Improvement in Colorimetric Detection of the Solubility Product Constant of Copper(II) Iodate[J]. University Chemistry, 2023, 38(12): 257-261. doi: 10.3866/PKU.DXHX202305023
比色法测碘酸铜溶度积常数实验的改进
English
Improvement in Colorimetric Detection of the Solubility Product Constant of Copper(II) Iodate
Abstract:
In recent studies, ammonia, a chromogenic reagent, has been used to detect the solubility product constant of copper(II) iodate via colorimetry. However, the use of ammonia can result in environmental pollution. As an alternative, glycine can be used as the chromogenic reagent. In this study, the reaction between glycine and copper(II) ions was investigated in detail. The reaction time and glycine concentration were optimized by acquiring UV-Vis spectra, determining the appropriate conditions for reacting the copper(II) complex with glycine. The absorption intensities at 640 nm for solutions of copper(II) ions at different concentrations were measured, and the concentration of copper(II) ions in saturated copper(II) iodate was determined by using the standard curve. The solubility product constant was calculated, which was close to the literature value. The release of corrosive and volatile gas was prevented in this experiment, and the complex solution could be recycled to prevent environmental pollution. Therefore, this method is green and applicable for use in basic experimental teaching activities.
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Key words:
- Copper(II) iodate
- / Solubility product constant
- / Colorimetry
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[1]
崔书文, 李晓东, 王敏. 佳木斯医学院学报, 1988, 11 (4), 321.
-
[2]
黄方志, 沈玉华, 谢安建, 叶桂生, 胡乃梁. 大学化学, 2007, 22 (5), 36.
-
[3]
沈晋明. 化学教育, 1980, No. 5, 34.
-
[4]
王奉书. 河北师范大学学报(自然科学版),1990, No. 4, 93.
-
[5]
郑道亨, 韦翰章. 化学教育, 1982, No. 4, 43.
-
[6]
张灿久, 何红运, 欧阳勔. 湖南师范大学学报(自然科学版), 1984, No. 4, 115.
-
[7]
陈建, 邓体龙. 淮北煤师院学报, 1998, 19 (4), 44.
-
[8]
陈建. 淮北煤师院学报, 1997, 18 (1), 62.
-
[9]
熊少祥. 大学化学, 1989, 4 (1), 44.
-
[10]
马桂林. 扬州师院自然科学学报, 1986, No. 1, 73.
-
[11]
朱妙琴. 光谱实验室, 2006, 23 (1), 110.
-
[12]
黄涛, 张明通, 李襄宏, 唐定国, 杨汉民, 刘浩文, 张丙广. 无机化学实验. 北京: 化学工业出版社, 2011: 89-92.
-
[13]
吉林大学, 武汉大学, 南开大学. 无机化学. 第4版. 北京: 高等教育出版社, 2004: 444.
-
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