| O—FPF—CTMAB荧光光度法测定水中微量钼的研究 |
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| 引用本文： | 马红燕,张社争,闫秦生.O—FPF—CTMAB荧光光度法测定水中微量钼的研究[J].延安大学学报(自然科学版),2001,20(1):59-61. |
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| 作者姓名： | 马红燕 张社争 闫秦生 |
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| 作者单位： | 1. 延安大学化学与化工系,
2. 榆林市产品质量监督检验所, |
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| 基金项目： | 陕西省教委专项科研基金资助课题(99JK124) |
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| 摘 要： | 研究了荧光光度法测定微量钼的新方法．在0．04～0．24mol.L^-1的盐酸介质中，邻氟苯基荧光酮(O-FPF)，溴化十六烷基三甲铵(CTMAB)和钼M0(Ⅵ)形成无荧光的三元配合物，从而导致体系的荧光熄灭，在激发波长λcm=365nm和发射波长λcm=529nm时，钼含量在0-3．0μg／25mL范围内，荧光熄灭值△F和钼浓度成正比．方法灵敏度高，检出限为2．0μg／L．用于水样中微量钼的测定，结果满意．
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| 关 键 词： | 钼 O-FPF CTMAB 荧光熄灭 |
| 文章编号： | 1004-602X(2001)01-0059-03 |
| 修稿时间： | 1999年11月1日 |
Study on the
Fluoro-Quenching Method for the Determination of Trace Molybdenum in water with o-Fiuoro
phenylfluorone in the Presence of CTMAB |
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| MA Hong-yan,ZHANG She-zheng,YAN Qin-sheng.Study on the
Fluoro-Quenching Method for the Determination of Trace Molybdenum in water with o-Fiuoro
phenylfluorone in the Presence of CTMAB[J].Journal of Yan'an University(Natural Science Edition),2001,20(1):59-61. |
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| Authors: | MA Hong-yan ZHANG She-zheng YAN Qin-sheng |
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| Institution: | MA Hong-yan1,ZHANG She-Zheng1,YAN Qin-sheng2 |
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| Abstract: | A new fluorometic method has been developed for the determination of micromounts of molybdenum (VI) based on the fluorescence quenching effect of O-FPF-CTMAB due to the formation of a nonfluorescence complex Mo(VI)-O-FPF-CTMAB. The optimum condition is studied. Rectilinear range is 0～3.0μg/25mL in 0. 04～0. 24mo1. L-1HC1 medium. The molar ratio of M0(VI) to O-FPF and CTMAB is 1:2: 2. The excitation and emission wavelengths are 365nm and 529nm, respectively. The method proposed has been successfully applied to the direct determination of trace M0 (VI) in water samples. |
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| Keywords: | Molybdenum O-Fluorophenylfluorone Cetyltrimethyl ammonium bromide Fluorescence quenching |
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