title: Study on the fluorescence system of chlortetracycline-Eu-TOPO-sodium dodecyl sulfonate and the determination of chlortetracycline.
abstract: The fluorescence system of Eu-chlortetracycline-TOPO-sodium dedecyl sulfonate was studied. It was found that chloretetracycline formed a complex with Eu(III) at pH 8.0-9.0 and then emitted the characteristic fluorescence of Eu(III). TOPO and sodium dodecyl sulfonate greatly enhanced the fluorescence intensity of the system. The experiments indicated that under the optimum determining conditions a linear relationship was obtained between the fluorescence intensity and chlortetracycline concentration in the range of 2.0 x 10(-8)-1.0 x 10(-5) M. The detection limit was 6.0 x 10(-9) M. In addition, the luminescence mechanism of the complex system has been discussed.
authors.affiliation: Department of Chemistry, Shandong University, Jinan, People's Republic of China.
authors.forename: J
authors.initials: J
authors.lastname: Yang
authors.forename: C
authors.initials: C
authors.lastname: Tong
authors.forename: N
authors.initials: N
authors.lastname: Jie
authors.forename: X
authors.initials: X
authors.lastname: Wu
authors.forename: G
authors.initials: G
authors.lastname: Zhang
authors.forename: H
authors.initials: H
authors.lastname: Ye
mesh_terms: D002751:Chlortetracycline / Q000097:blood / Q000737:chemistry* / Q000652:urine; D005063:Europium / Q000737:chemistry*; D005453:Fluorescence; D006863:Hydrogen-Ion Concentration; D009943:Organophosphorus Compounds / Q000737:chemistry; D012967:Sodium Dodecyl Sulfate / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D013501:Surface-Active Agents / Q000737:chemistry
chemical_list: D009943:Organophosphorus Compounds; D013501:Surface-Active Agents; D012967:Sodium Dodecyl Sulfate; D005063:Europium; C044965:trioctyl phosphine oxide; D002751:Chlortetracycline