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| 4, 5-二溴苯基荧光酮光度法测定微量钯 |
| Determination of Trace Palladium by Spectrophotometric Method with 4, 5-Dibromophenylfluorone |
| 投稿时间：2004-04-16 修订日期：2004-07-21 |
| DOI： |
| 中文关键词: 4,5-二溴苯基荧光酮 分光光度法 钯 |
| 英文关键词:4,5-dibromophenylfluorone spectrophotometry Palladium |
| 基金项目:淮海工学院教学改革研究项目(2003年). |
| 作者 | 单位 | | 陈文宾 | 淮海工学院化学工程系, 江苏, 连云港, 222005 | | 徐国想 | 淮海工学院化学工程系, 江苏, 连云港, 222005 | | 张娟 | 淮海工学院化学工程系, 江苏, 连云港, 222005 | | 周洪英 | 淮海工学院化学工程系, 江苏, 连云港, 222005 |
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| 中文摘要: |
| 研究了在十二烷基磺酸钠存在下,Pd(Ⅱ)与4,5-二溴苯基荧光酮的显色反应.试验表明,在pH6.3醋酸-醋酸钠缓冲溶液中,Pd(Ⅱ)与试剂形成1:4的暗黄色配合物,配合物的最大吸收峰位于376nm波长处,表观摩尔吸光系数ε为1.06×105L/(mol·cm).Pd(Ⅱ)含量在0～12μg/10mL范围内符合比尔定律.所拟方法用于钯催化剂和钯矿样中微量钯的测定,结果满意. |
| 英文摘要: |
| The color reaction of the reagent DBPF with Pd(Ⅱ) in the presence of SLS was studied. Results show that the new color reagent reacts with Pd(Ⅱ) to form a stable yellow complex(1:4)in the presence of SLS at pH 6.3 of HAc-NaAc buffer. The maximum absorption wavelength and apparent molar absorptivity are 376 nm and 1.06×105 L/(mol·cm) respectively. Beer's law is obeyed in the range of 0～12 μg/10 mL Pd(Ⅱ). The method has been applied to the determination of trace palladium (Ⅱ) in palladium catalyst and mineral samples with satisfactory results. |
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