| 硫酸预活化测定痕量氟的离子选择性电极法 |
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| 引用本文： | 苏玉芹,石生勋,王宝君,成永强,陈起斌. 硫酸预活化测定痕量氟的离子选择性电极法[J]. 河北大学学报(自然科学版), 2006, 26(5): 496-500 |
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| 作者姓名： | 苏玉芹 石生勋 王宝君 成永强 陈起斌 |
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| 作者单位： | 河北大学,化学与环境科学学院,河北,保定,071002 |
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| 摘 要： | 研究了一种在0.5 mol/L的硫酸介质中先活化氟离子选择性电极,然后再在含有硫酸总离子强度调节混合溶液(TISAM)介质中测定痕量氟的方法.该方法线性范围为1.00×10-2~1.00×10-7mol/L,检出限为1.9μg/L,应用到绿茶饮料、水、牛奶中痕量氟的测定,结果令人满意.
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| 关 键 词： | 硫酸预活化 痕量氟 离子选择性电极法 |
| 文章编号： | 1000-1565(2006)05-0496-05 |
| 修稿时间： | 2005-09-25 |
Ion-selective Electrode Method by Preactivating in Sulfuric Acid for the Determination of Trace Fluoride |
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| SU Yu-qin,SHI Sheng-xun,WANG Bao-jun,CHENG Yong-qiang,CHEN Qi-bin. Ion-selective Electrode Method by Preactivating in Sulfuric Acid for the Determination of Trace Fluoride[J]. Journal of Hebei University (Natural Science Edition), 2006, 26(5): 496-500 |
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| Authors: | SU Yu-qin SHI Sheng-xun WANG Bao-jun CHENG Yong-qiang CHEN Qi-bin |
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| Abstract: | An ion-selective eiectrode method was developed for the determination of the fluoride concentration at mg/L level.Fluoride ISE was preactivated in 0.5 mol/L H-2SO-4 medium and then fluoride was determined in TISAM medium.The linear range for the determination of fluoride is between 1.00 ×10~(-2)～1.00 ×10~(-7) mol/L,and the detection limit of the method is 1.9 μg/L.The method has been used for the determination of trace fluoride in tea drink,drinking water and milk with satisfactory results.A possible mechanism for the activation of FISE was proposed. |
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| Keywords: | sulfuric acid preactivating trace fluoride ion-selective electrode method |
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