| 纳米二氧化钛膜光催化分解-电化学法联用测定水体中的总磷 |
| |
| 引用本文： | 艾仕云,张波,曲祥金,邹萱,金利通.纳米二氧化钛膜光催化分解-电化学法联用测定水体中的总磷[J].分析化学,2006,34(8):1068-1072. |
| |
| 作者姓名： | 艾仕云 张波 曲祥金 邹萱 金利通 |
| |
| 作者单位： | 山东农业大学化学与材料科学学院,泰安,271018;华东师范大学化学系,上海,200062 |
| |
| 基金项目： | 国家自然科学基金(No.20327001)，科技攻关(No.2002AA601330)资助项目 |
| |
| 摘 要： | 利用电化学方法制备了磷钼酸修饰电极,该修饰电极对溶液中的PO43-有很好的电流响应,继而提出了一种用纳米TiO2-K2S2O7共存体系光催化氧化有机磷生成正磷,然后以磷钼酸修饰电极进行测定的新方法。实验中以有机膦酸为标准物质,研究了测定机理,优化了测定条件。实验表明,本方法操作简单、快速、准确。PO43-在0.04~16 mg/L浓度范围内,与修饰电极上的电流响应呈线性关系,检出限为0.02 mg/L。用本方法测定实际水样与标准分析方法所得结果相近。
|
| 关 键 词： | 总磷 磷钼酸修饰电极 光催化氧化 纳米二氧化钛 |
| 收稿时间： | 10 8 2005 12:00AM |
| 修稿时间： | 2005-10-082006-03-10 |
Determination of Total Phosphorus in Water Based on Nanometer Titanium Dioxide Film Photocatalytic Oxidation with Electrochemical Method |
| |
| Ai Shiyun,Zhang Bo,Qu Xiangjin,Zou Xuan,Jin Litong.Determination of Total Phosphorus in Water Based on Nanometer Titanium Dioxide Film Photocatalytic Oxidation with Electrochemical Method[J].Chinese Journal of Analytical Chemistry,2006,34(8):1068-1072. |
| |
| Authors: | Ai Shiyun Zhang Bo Qu Xiangjin Zou Xuan Jin Litong |
| |
| Institution: | College of Chemistry and Material Science, Shandong Agricultural University, Taian 271018 ; 2 Department of Chemistry, East China Normal University, Shanghai 200062 |
| |
| Abstract: | A new method of detection total phosphorus in water based on nano-TiO_(2)-K_(2)S_(2)O_(8)co-existed system photocatalytic oxidation with PMo_(12) film modified electrode was described.The PMo_(12) film modified electrode was prepared with phosphomolybdate(PMo_(12)) by electrochemical syntheses on a glassy carbon electrode.The PMo_(12) film modified electrode shows high electrochemical response toward PO~(3-)_4 and thus could be used as an amperometric sensor for the determination of the PO~(3-)_4.The optimal experimental conditions and the mechanism of the detection were discussed by using organophosphonic acid as a standard substance.The experiment showed that this method is convenient and can implement fast and accurate determination.The determination range of PO~(3-)_4 was 0.04-16 mg/L and the limit of detection was 0.02 mg/L.The method was also applied to determine total phosphorus of real water samples.The results were in good agreement with the standard(method). |
| |
| Keywords: | Total phosphorus phosphomolybdate modified electrode photocatalytic oxidation nanometer titanium dioxide |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
