| 光度法对铜-苯丙氨酸配合物组成及稳定常数的测定 |
| SPECTROPHOTOMETRIC STUDIES ON THE COMPOSITIONS AND STABILITY CONSTANTS OF COPPER (Ⅱ)-PHENYLALANINE COMPLEXES |
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| 摘要: 铜、苯丙氨酸及二者的配合物在紫外光谱区均有较强的吸收，为求得纯配合物的吸光度，我们建立了三参比法，并在此基础上探讨了pH值对配合物形成的影响。实验证实当pH≥7.5时，二者仅形成1∶2(M∶L)的配合物。我们还采用对应溶液法测定了该配合物的稳定常数。 |
| 关键词: 铜 苯丙氨酸 配合物 组成比 稳定常数 |
| 基金项目: |
| Abstract: Copper (Ⅱ), Phenylalanine (Phe) and their complexes all have strong ultraviolet absorptions. In order to obtain the absorbance of Cu(Ⅱ)～Phe complexes, we set up three reference method, discussed the influence of pH to the formation of the complexes, and justified that when pH≥7.5, only 1∶2 (Cu∶Phe) complex was formed. We further detected stability constants of Cu(Ⅱ)～Phe complexes using corresponding solution method. |
| Keywords: copper phenylalanine complex composition stability constant |
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| 林秀丽,主沉浮,魏云鹤,高峰.光度法对铜-苯丙氨酸配合物组成及稳定常数的测定[J].无机化学学报,1999,15(1):42-48. |
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