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Spectrofluorimetric determination of trace nitrite with a novel fluorescent probe
Liu, Qing-Hao1; Yan, Xi-Long1,2; Guo, Jin-Chun2; Wang, Dong-Hua3; Li, Lei1; Yan, Fan-Yong4; Chen, Li-Gong1
2009-09-01
发表期刊SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
卷号73期号:5页码:789-793
文章类型Article
摘要A simple, sensitive and selective fluorimetric determination for trace nitrites was developed using an unsymmetrical rhodamine with a high fluorescence quantum yield and large Stokes shift. The method is based on the reaction of the unsymmetrical rhodamine with nitrite in an acidic medium to form a nitroso product, which has much lower fluorescence because the electron-withdrawing effect of the nitroso group influences the system of p-pi conjugation between N atom and benzene ring. Under optimum conditions, the fluorescence quenching intensity is linear over a nitrite concentration range of 1.0 x 10(-8) to 3.5 x 10(-7) M. The detection limit is 2.0 x 10(-10) M (S/N = 3). The method was applied to the determination of nitrite in tap water and lake water with satisfactory results. The mechanism for the reaction is also reported. (C) 2009 Elsevier B.V. All rights reserved.
关键词Spectrofluorimetric Nitrite Fluorescent Probe Unsymmetrical Rhodamine
WOS标题词Science & Technology ; Technology
关键词[WOS]FLUOROMETRIC-DETERMINATION ; WATER SAMPLES ; CAPILLARY-ELECTROPHORESIS ; NITRATE ; ION ; CHROMATOGRAPHY ; REAGENT ; SYSTEM
收录类别SCI
语种英语
WOS研究方向Spectroscopy
WOS类目Spectroscopy
WOS记录号WOS:000268009400001
引用统计
被引频次:31[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.isl.ac.cn/handle/363002/5880
专题青海盐湖研究所知识仓储
作者单位1.Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China
2.Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining 810008, Peoples R China
3.Tianjin Univ, Sch Pharmaceut & Biotechnol, Tianjin 300072, Peoples R China
4.Tianjin Polytech Univ, Sch Mat Sci & Chem Engn, Tianjin 300160, Peoples R China
推荐引用方式
GB/T 7714
Liu, Qing-Hao,Yan, Xi-Long,Guo, Jin-Chun,et al. Spectrofluorimetric determination of trace nitrite with a novel fluorescent probe[J]. SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY,2009,73(5):789-793.
APA Liu, Qing-Hao.,Yan, Xi-Long.,Guo, Jin-Chun.,Wang, Dong-Hua.,Li, Lei.,...&Chen, Li-Gong.(2009).Spectrofluorimetric determination of trace nitrite with a novel fluorescent probe.SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY,73(5),789-793.
MLA Liu, Qing-Hao,et al."Spectrofluorimetric determination of trace nitrite with a novel fluorescent probe".SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 73.5(2009):789-793.
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