基于吡啶甲基萘酰亚胺的水中痕量铁检测方法研究  

Determination of trace Fe^(3+) in water samples based on N-(2-pyridylmethyl)-naphthalimide

作　　者：李慧霞[1] 曾光明[1] 牛承岗[1] 秦品珠[1] 阮敏[1] 

机构地区：[1]湖南大学环境科学与工程学院,湖南长沙410082

出　　处：《中国环境科学》2009年第3期280-283,共4页China Environmental Science

基　　金：国家"863"项目(2006AA06Z407);长江学者和创新团队发展计划资助(IRT0719)

摘　　要：合成了一种新型的荧光分子探针N-(2-吡啶甲基)-1,8-萘酰亚胺(PMN),研究了其在环境水样中痕量铁离子的检测应用.结果表明,该方法选择性好,灵敏度高,操作简便,且常见金属离子不干扰测定.Fe3+浓度在1×10-7～8×10-5mol/L范围内,荧光强度与其浓度呈良好的线性关系.方法用于自来水、井水、生活污水中痕量铁的测定,回收率在95.78%～104.02%之间.A new fluorescent probe, N-（2-pyridylmethyl）-1, 8-naphthalimide（PMN） was synthesized and its application for detection of trace Fe^3＋ in water samples was investigated. The fluorescence intensity of the probe decreased with increasing concentration of Fe^3＋, while other cations had little or no response on the fluorescence intensity of PMN. In a certain range of 1×10^-7-8×10^-5mol/L, the fluorescence intensity was linear dependent on the concentration of Fe^3＋.The method was verified having the advantages of high sensitivity, good selectivity and easy to operate. It was successfully applied to determinate Fe^3＋ in tap water, well water and domestic sewage samples.

关 键 词：N-(2-吡啶甲基)-1 8-萘酰亚胺 铁离子测定 荧光猝灭 

分 类 号：X132[环境科学与工程—环境科学]