title: Fluorescence enhancement effect of Eu(III)-thenoyltrifluoroacetone-cetyltrimethyl ammonium bromide in water-dissolved organic matter extracted from wheat straw.
abstract: The fluorescence spectral characteristics of water-dissolved organic matter extracted from wheat straw (DOM-WS) were studied using three-dimensional excitation-emission matrix (3D-EEM) fluorescence spectroscopy. The results indicated that 3D-EEM spectra of DOM-WS showed four different fluorophores: humic-like, visible fulvic-like, UV fulvic-like and protein-like substances. It is interesting that DOM-WS can obviously enhance the fluorescence intensity of Eu(III)-thenoyltrifluoroacetone-cetyltrimethyl ammonium bromide system. On the basis of this study, a new fluorescence method for the determination of trace amounts of Eu(III) was developed. Under the optimal conditions, the enhanced fluorescence intensity was in proportion to the concentration of Eu(III) in the range of 8.0×10(-8)-8.0×10(-7)mol/L. The detection limit (S/N=3) was 1.1×10(-9)mol/L. This method was applied to the analysis of Eu(III) concentration in standard sample and obtained satisfactory results. It may be a new way to use wheat straw effectively.
authors.affiliation: School of Chemistry and Chemical Engineering, Shandong University, Key Laboratory of Colloid and Interface Chemistry (Shandong University), Ministry of Education, Jinan 250100, PR China.
authors.forename: Fei
authors.initials: F
authors.lastname: Huang
authors.affiliation: School of Chemistry and Chemical Engineering, Shandong University, Key Laboratory of Colloid and Interface Chemistry (Shandong University), Ministry of Education, Jinan 250100, PR China.
authors.forename: Fanhui
authors.initials: F
authors.lastname: Meng
authors.affiliation: School of Chemistry and Chemical Engineering, Shandong University, Key Laboratory of Colloid and Interface Chemistry (Shandong University), Ministry of Education, Jinan 250100, PR China.
authors.forename: Mengdi
authors.initials: M
authors.lastname: Fan
authors.affiliation: School of Chemistry and Chemical Engineering, Shandong University, Key Laboratory of Colloid and Interface Chemistry (Shandong University), Ministry of Education, Jinan 250100, PR China.
authors.forename: Yanyan
authors.initials: Y
authors.lastname: Zhao
authors.affiliation: School of Chemistry and Chemical Engineering, Shandong University, Key Laboratory of Colloid and Interface Chemistry (Shandong University), Ministry of Education, Jinan 250100, PR China. Electronic address: wux@sdu.edu.cn.
authors.forename: Xia
authors.initials: X
authors.lastname: Wu
authors.affiliation: College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, PR China.
authors.forename: Lin
authors.initials: L
authors.lastname: Shen
mesh_terms: D000077286:Cetrimonium; D002593:Cetrimonium Compounds / Q000737:chemistry*; D056831:Coordination Complexes / Q000737:chemistry; D005063:Europium / Q000737:chemistry*; D005453:Fluorescence; D009930:Organic Chemicals / Q000032:analysis*; D013050:Spectrometry, Fluorescence; D013804:Thenoyltrifluoroacetone / Q000737:chemistry*; D014908:Triticum / Q000737:chemistry*; D014867:Water / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D002593:Cetrimonium Compounds; D056831:Coordination Complexes; D009930:Organic Chemicals; D014874:Water Pollutants, Chemical; D014867:Water; D013804:Thenoyltrifluoroacetone; D005063:Europium; D000077286:Cetrimonium
keywords: Dissolved organic matter; Eu(III); Fluorescence enhancement; Wheat straw