| 吡哆醇离解常数及稀土络合物稳定常数的测定 |
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| 引用本文： | 翟仁通,谢育才,徐懿君.吡哆醇离解常数及稀土络合物稳定常数的测定[J].山西农业大学学报(自然科学版),1990(4). |
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| 作者姓名： | 翟仁通 谢育才 徐懿君 |
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| 作者单位： | 山西农业大学基础部 太谷 |
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| 摘 要： | 本文用pH电位法测定了吡哆醇的离解常数得到数值为pK_14.99、pK_29.00。同时测定了La~(3+)、Gd~(3+)、Tm~(3+)与吡哆醇络合物的稳定常数。用Bjerrum法得到La、lgβ_12.72; Gd、lgβ_13.67、lgβ_26.34;Tm、lgβ_13.88,lgβ_26.73。由体系中络离子的分布状况可以得到生物学上有意义的结果。
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| 关 键 词： | 吡哆醇 稀土元素 |
DETERMINATION OF THE DISSOCIATION CONSTANTS OF PYRIDOXIN AND THE STABLITY CONSTANTS OF PYRIDOXIN COMPLEXES WITH RARE EARTH IONS |
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| Zhai Rentong.DETERMINATION OF THE DISSOCIATION CONSTANTS OF PYRIDOXIN AND THE STABLITY CONSTANTS OF PYRIDOXIN COMPLEXES WITH RARE EARTH IONS[J].Journal of Shanxi Agricultural University,1990(4). |
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| Authors: | Zhai Rentong |
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| Institution: | Zhai Rentong Department of Baisic Sciences,Shanxi,Agricultural University,Taigu,Shanxi,China |
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| Abstract: | The existence of pyridoxin complexes with rare earth ions in aqueous solutions was demonstrated by potentionmetric measurements with glass electrodes. The major results are as foolows: H_2L PK_1 4.99, PK_2 9.00 LaL_2 lgβ_1 2.72 GdL_2 lgβ_1 3.67, lgβ_2 6.34 TmL_2 lgβ_1 3.88, lgβ_2 6.73 where L denotes pyridoxin. The biological importance of the data can be realized from the distribution of these complexes. |
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| Keywords: | pyridoxin rare earth |
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