Abstract
A new spectrofluorimetric method was developed for the determination of trace amounts of lecithin using the ciprofloxacin (CIP)–terbium (Tb3+) ion complex as a fluorescent probe. In a buffer solution at pH=5.60, lecithin can remarkably reduce the fluorescence intensity of the CIP–Tb3+ complex at λ=545 nm. The reduced fluorescence intensity of the Tb3+ ion is proportional to the concentration of lecithin. Optimum conditions for the determination of lecithin were also investigated. The linear range and detection limit for the determination of lecithin were 1.0×10−6–3.0×10−5 mol L−1 and 3.44×10−7 mol L−1, respectively. This method is simple, practical, and relatively free of interference from coexisting substances. Furthermore, it has been successfully applied to assess lecithin in serum samples.
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References
Campanella L, Pacifici F, Sammartino MP, Tomassetti M (1998) Bioelectrochem Bioenerg 47:25–38
Campanella L, Magri AL, Sorbo A, Tomassetti M (2002) J Pharm Biomed Anal 29:1135–1148
Baenholzd Y (1980) Biochime Biophys Acta 604:129
Yie YW, Li JZ, Wang YC (1989) Clinical experimental diagnostics. People Sanitation Press, Beijing, p 674
Guo Q, Xu GY, Chang LW (1998) Chin J Anal Chem vol 81–84
Hanras C, Perrin JL (1991) J AOCS 68:302–309
Hradec J, Dufek P (1997) J Chromatography B 703:259–262
Ceve G, Paltauf F (1995) (eds) Phospholipids: characterization, metabolism, and novel biological applications. AOCS
Faju H, Chongqiu J (2005) Anal Lett 38(2):281–289
Yusheng W, Lin F, Chongqiu J (2005) Spectrochim Acta A 61:2909–2914
Richardson FS (1982) Chem Rev 82:541–552
Yuan JL, Wang GL, Majima K, Matsumoto K (2001) Anal Chem 73:1869–1876
Xing da Zeng (2001) Applied clinic handbook. Guangdong Science and Technology, China
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Bian, W., Jiang, C. Highly sensitive spectrofluorimetric determination of trace amounts of lecithin. Anal Bioanal Chem 385, 861–865 (2006). https://doi.org/10.1007/s00216-006-0488-0
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DOI: https://doi.org/10.1007/s00216-006-0488-0