| 二安替比林对溴苯基甲烷光度法测定锰 |
| 摘要点击 711 全文点击 1415 投稿时间：1996-11-12 |
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| 中文关键词 二安替比林对溴苯基甲烷 光度法 锰 |
| 英文关键词 diantipyry-(p-bromo)-phenylmethane spectrophotometric manganese |
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| 中文摘要 |
| 合成了一个新的二安替比林试剂,二安替比林对溴苯基甲烷(DApBM),并研究了它和Mn(Ⅶ)的显色条件。在磷酸介质中,Mn(Ⅱ)存在下,DApBM和Mn(Ⅶ)生成橙色产物,λmax=480nm,ε=1.28×106L·(mol·cm-1,锰的含量在0.1-0.9μg/25ml内符合比尔定律。用于食品和水样中锰的测定,结果满意。 |
| 英文摘要 |
| Diantipyryl-(p-bromo)-phenylmethane(DApBM)was synthesized and indentified. A highly sensitive spectrophotometric method has been developed for the determination of manganese with DApBM. In the presence of Mn(Ⅱ),Mn(Ⅶ)can reacts with DApBM to form an orange and yellow product in phosphoric acid mediun.The molar absorptivity is 1 28×106 L·mol-1 ·cm-1 at 480nm.Beer's law is in keeping in the range of 0.1-0.9μg/25ml.This method has been applied to the determination of manganese in food and water, the results are satisfactied. |
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