| 催化动力学荧光法测定痕量铁新体系的研究 |
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| 引用本文： | 李国清,戴彩蓉.催化动力学荧光法测定痕量铁新体系的研究[J].韶关学院学报,2009,30(3):61-65. |
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| 作者姓名： | 李国清 戴彩蓉 |
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| 作者单位： | 泉州师范学院化学与生命科学学院,福建,泉州,362000 |
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| 基金项目： | 福建省自然科学基金，福建省科技计划项目 |
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| 摘 要： | 在pH=4.0的HAc-NaAc缓冲溶液介质中，对铁催化高碘酸钾氧化二氯荧光素的反应进行了研究，建立了一种荧光光度催化法测定痕量铁的新方法，并将其应用于测定蔬菜中铁含量．结果表明，在实验确定的最佳条件下，该方法的线性范围为0～64μg／L，检出限为4．949×10^6g／L，相对标准偏差为0．22％，回收率为95．6％～102．2％．该方法用于测定蔬菜中铁含量的结果令人满意．
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| 关 键 词： | 催化动力学荧光法 二氯荧光素 高碘酸钾 铁 |
Studies on the new system of determination of trace iron by catalytic fluorimetric |
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| LI Guo-qing,DAI Cai-rong.Studies on the new system of determination of trace iron by catalytic fluorimetric[J].Journal of Shaoguan University(Social Science Edition),2009,30(3):61-65. |
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| Authors: | LI Guo-qing DAI Cai-rong |
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| Institution: | (School of Chemistry and Life Sciences, Quanzhou Normal University, Quanzhou 362000, Fujian, China) |
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| Abstract: | A new catalytic fluorimetric system of determination trace iron has been investigated in HAc-NaAc （pH=4.0） buffer solution. This method is based on the catalytic oxidation of DCF by Iron. It was applied to determine the trace iron in vegetables. The results showed, under the best conditions, the linear range of determination is 0-64μg/L, the detection limit is 4.95×10^-6g/L, the relative standard deviation is 0.22 %, the recovery rate for Fe is between 95.6%-102.2 %. This method has got satisfied results in determination the trace iron in vegetable. |
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| Keywords: | catalytic fluorimetry DCF KIO4 iron |
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