| 钼-二溴邻硝基苯基荧光酮-CTMAB体系的分光光度法研究 |
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| 引用本文： | 朱理哲. 钼-二溴邻硝基苯基荧光酮-CTMAB体系的分光光度法研究[J]. 光谱实验室, 2001, 18(2): 189-191 |
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| 作者姓名： | 朱理哲 |
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| 作者单位： | 湘潭工学院资工系 |
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| 摘 要： | 研究了 1.2 mol· L-1的盐酸溶液中 ,有 CTMAB存在下 ,钼与 DBON- PF的显色反应。钼与 DBON- PF生成红色络合物 ,最大吸收波长为 540 nm,摩尔吸光系数为 6.2× 10 4 L·mol-1·cm-1。测得络合物的组成比为 Mo( )∶ DBON- PF=1∶ 2。钼量在 0— 2 0 μg/ 2 5m L范围内符合比耳定律。有色络合物稳定 8h以上。该方法用于矿石中微量钼的测定 ,结果令人满意。
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| 关 键 词： | 二溴邻硝基苯基荧光酮 十六烷基三甲基溴化铵 分光光度法 矿石 测定 |
| 文章编号： | 1004-8138(2001)02-0189-03 |
| 修稿时间： | 2000-10-30 |
Spectrophotometric Study on Molybdenum-DBON-PF-CTMAB System |
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| ZHU Li-zhe. Spectrophotometric Study on Molybdenum-DBON-PF-CTMAB System[J]. Chinese Journal of Spectroscopy Laboratory, 2001, 18(2): 189-191 |
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| Authors: | ZHU Li-zhe |
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| Abstract: | In the medium of 1.2mol*L-1 HCl,color reaction of molybdenum(Ⅵ) with 4,5 -dibromo-2-nitro-phenylfluorone(DBON-PF) was investigated in the presence of cetyltrimethylammonium bromide(CTMAB).Mo(Ⅵ) forms red complex with DBON-PF,the apparent molar absorptivity is 6.2×104L*mol-1*cm-1 at 54 0nm.The complex ratio of Mo(Ⅵ) to DBON-PF is 1∶2. Beer,s law is obeyed in the range of 0—20μg/25mL for molybdenum.Color complex is stable for at least 8h .The method has been applied to the determination of trace molybdenum in ore with satisfactory results. |
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| Keywords: | Molybdenum 4 5|Dibromo|2|Nitro|Phenylfluorone Cetyltrimethylammonium Bromide Spectrophotometry. |
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