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| Study on the Interaction of 3,3',3'-Nitrilotripropionic Acid–Be(II) Complex |
| Received:July 21, 2014 Revised:September 22, 2014 |
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| DOI：doi:10.3969/j.issn.2095-1035.2014.04.015 |
| KeyWord:3,3',3'-nitrilotripropionic acid; beryllium; spectrophotometric; chelating |
| Author | Institution |
| MA Jifei |
中国科学院上海应用物理研究所 熔盐化学与工程技术部，上海 |
| YAO Jian |
中国科学院上海应用物理研究所 熔盐化学与工程技术部，上海 |
| ZHU Yin |
中国科学院上海应用物理研究所 熔盐化学与工程技术部，上海 |
| LI Yulan |
中国科学院上海应用物理研究所 熔盐化学与工程技术部，上海 |
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| Abstract: |
| The concentrations of 3,3',3'-Nitrilotripropionic?Acid (NTP) were determined by spectrophotometric method based on the interaction between Be(Ⅱ) and NTP.The effects of chelating time, pH and concentration of Be(Ⅱ) on the chelating reaction were investigated. The optimum experimental conditions were obtained as follows: room temperature at 25 ℃, pH=6.0, the chelating time 2 h, NTP and Be(Ⅱ) complex was in a molar ratio of 1:1, and the conditional stability constant (lgK) was 4.35. The results showed that the pH value impacts greatly on the NTP and Be(Ⅱ) complex, and the chelating reaction becomes stable when the reaction solution is weak acid. |
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