Spectrofluorimetric determination of trace nitrite with a novel fluorescent probe

ISL OpenIR > 青海盐湖研究所知识仓储

	Spectrofluorimetric determination of trace nitrite with a novel fluorescent probe
	Liu, Qing-Hao 1; Yan, Xi-Long 1,2; Guo, Jin-Chun 2; Wang, Dong-Hua 3; Li, Lei 1; Yan, Fan-Yong 4; Chen, Li-Gong 1
	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
关键词	Spectrofluorimetric Nitrite Fluorescent Probe Unsymmetrical Rhodamine
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.
语种	英语
引用统计
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中国科学院青海盐湖研究所
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.