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荧光法用于痕量亚硝酸根的测定
  • 期刊名称：山西大同大学学报(自然科学版)，2007，23(1)：31-33
  • 时间：0
  • 分类：O657.3[理学—分析化学;理学—化学]
  • 作者机构：[1]山西大同大学化学与化工学院 山西大同大学化学与化工学院 山西大同 山西大同
  • 相关基金：国家自然科学基金[20572057];; 山西省自然科学基金[20051031];; 山西省教育厅高科技开发项目[2003033]
  • 相关项目：基于微珠注射的液滴光化学生物传感技术的研究
关键词： 亚硝酸根, 异硫氰酸荧光素, 荧光猝灭, 液滴, 流动注射, nitrite, fluorescein isothiocyanate, fluorescence quenching, liquid drop, flow injection
中文摘要：

基于亚硝酸根与碘化钾反应生成单质碘,碘可使异硫氰酸荧光素发生荧光猝灭的原理,采用流动注射连续可更新液滴荧光法测定亚硝酸根.体系的激发和发射波长分别为492nm和516nm,亚硝酸根含量在25~100μg/L范围内有良好的线性关系,检测限为3.9μg/L.本方法灵敏度高,选择性好,操作简单.用于环境水样中痕量亚硝酸根的测定,结果满意.

英文摘要：

A sensitive and selective fluorescence quenching spectrofluorimetry based on flow injection renewable drops technique was developed to determine nitrite with fluorescein isothiocyanate as the fluorescent reagent(λex= 492 nm,λem=516nm).Nitrite reacts with potassium iodide in sulfuric acid solution giving iodine(I2),which then reacts with fluorescein isothiocyanate to produce a non-fluorescent compound,then quenching the fluorescence intensity of the system.The linear calibration range is 25～100 g/L with the ...

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具有生物活性的某些含氮杂环化合物的合成方法学研究
期刊论文 25
基于微珠注射的液滴光化学生物传感技术的研究
期刊论文 19 会议论文 7 获奖 2
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