Abstract
The usefulness of sodium fluorescein (SF) and related physical parameters were analysed. Two factors that may affect the molar absorption coefficient (ɛ) of this compound were the presence of impurities and the pH of the solution. As discrepant values can be found in the literature for that coefficient, a purification technique was used and SF quantification was performed according to sodium concentration determined by atomic absorption spectrophotometry. The molar absorption coefficient of the SF solution in phosphate buffer pH 7.4 was determined. To study the influence of pH on ɛ determination, absorption spectra at pH 1, 3, 5, and 10 were also analysed.
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Passmore JW, King JH. Vital staining of conjunctiva and cornea. Arch S.A. Ophthalmol 1955; 55: 568–74.
Anderson JR. Aids to corneal staining. Ophthalmologica 1949; 118: 444–49.
Lebensohn JE. Fluorescein in ophthalmology. Am J ophthalmol 1969; 67: 272–74.
Bron AJ, Tripathi RC. Cystic disorders of the corneal epithelium. I Clinical aspects. Br J Ophthalmol 1973; 57: 361–75.
Bron AJ, Brown NA. Some superficial corneal disorders. Trans Ophthalmol Soc UK 1971; 91: 13–29.
Maurice DM. A new objective fluorophotometer. Exp Eye Res 1963; 2: 33–38.
Cunha-Vaz J, Faria de Abreu JR, Campos AJ, Figo GM. Early breakdown of the blood retinal barrier in diabetes. Br J Ophthalmol 1975; 59: 649–56.
Cunha-Vaz JG, Fonseca JR, Abreu JF. Vitreous fluorophotometry and retinal blood flow studies in proliferative retinopathy. Graefes Arch Clin Exp Ophthalmol 1978; 207: 71–76.
Zeimer RC, Cunha-Vaz JG, Johnson ME. Studies on the technique of vitreous fluorophotometry. Invest Ophthalmol Vis Sci 1982; 22: 668–74.
Zeimer RC, Blair NP, Cunha-Vaz JG. Vitreous fluorophotometry for clinical research. II Method of data acquisition and processing. Arch Ophthalmol 1983; 101: 1757–61.
Boot JP, Van Best JA, Tjin A Tsoi EWJ, Kappelhof JA, Oosterhuis JA. Plasma fluorescein decay determination during fluorophotometry. Doc Ophthalmol 1987; 65: 403–22.
Mota MC, Cunha-Vaz JG. Studies on fluorescein concentration in the plasma. Graefes Arch Clin Exp Ophthalmol 1985; 222: 170–72.
Lavorel J. Influence of concentration on the absorption spectrum and the action spectrum of fluorescence of dye solutions. J Phys Chem 1957; 61: 1600–05.
Machwe MK. Effect of concentration on fluorescence spectrum of fluorescein. Current Sci (India) 1970; 18: 412–13.
Umberger JQ, LaMer VK. The kinetics of diffusion controlled molecular and ionic reactions in solution as determined by measurements of the quenching of fluorescence. Am Chem Soc J 1945; 67: 1099–1109.
Van Duren BL. Effect of the environment on the fluorescence of aromatic compounds in solution. Chem Rev 1961; 63: 325–54.
Levshin VL, Krotova LV. The association nature of the concentration quenching of the luminescence of Na-fluorescein in aqueous and glycerin solutions. Opthalm Spectrosc 1962; 13: 457–62.
Pant DD, Pant HC. Aggregate emission in uranin solutions. Indian J Pure Appl Phys 1968; 6: 238–43.
Dandliker WB, Alonso R. Purification of fluorescein and fluorescein derivatives by cellulose ion exchange chromatography. Immunochemistry 1967; 4: 191–96.
Forster LS, Dudley D. The luminescence of fluorescein dyes. J Phys Chem 1962; 66: 838–40.
Seybold P, Gouterman M, Callis J. Calorimetric, photometric, and lifetime determinations of fluorescence yields of fluorescein dyes. Photochem Photobiol 1969; 9: 229–42.
Zanker V, Peter W. Die prototropen Formen des Fluoresceins. Chem Ber 1958; 91: 572–80.
Bouchard J. Contribution a l'etude de fluorescence des solutions. J Chim Phys 1936; 33: 64–71.
Boutarica A, Roy M. Pouvoir fluorescent des solutions d'uranine en function de leur concentration en ions H+. Comp Rend Acad Sci 1939; 209: 162–64.
Hiramoto R, Bernecky J, Jurand J, Hamlin M. The effect of hydrogen ion concentration on fluorescent labelled antibodies. J Histochem Cytochem 1964; 12: 271–74.
Mecklenburg W, Valentiner S. Uber die Abhangigkeit der Fluoreszenz von der Konzentration. Physik Zeitschr 1914; 15: 267–74.
Romanchuk MD, Kenneth G. Fluorescein. Physicochemical factors affecting its fluorescence. Surv Ophthalmol 1982; 26: 269–83.
Rozwadowski M. Effect of pH on fluorescence of fluorescein solutions Acta Phys Pol 1961; 20: 1005–17.
Shoften E, Habeeb A. The estimation of fluorescein in dilute solutions. J Pharm Pharmacol 1955; 7: 456–62.
Guibault GG. Practical fluorescence, theory, methods and techniques. New York: 1973; 23–28.
Karykin AV, Babicheva GG. Effect of structure of aqueous solutions on the luminescence yield of dyes. Opthalm Spectrosc 1968; 24: 541–42.
Pringsheim P. Fluorescence and phosphorescence. New York: Interscience, 1949; 306–12.
Melhado LL, Peltz SW, Leytus SP, Mangel WF. p-Guanidinobenzoic acid esters of fluorescein as active-site titrants of serine proteases. J Am Chem Soc 1982; 104: 7299–306.
Hammond PR. Spectroscopic and laser properties of the dye chromogen red B. J Photochem 1979; 10: 467–71.
Delori FC, Castany MA, Webb RH. Fluorescence characteristics of sodium fluorescein in plasma and whole blood. Exp Eye Res 1978; 27: 417–25.
Matveets MA, Shcherbov DP, Akhmetova SD. Investigation of the spectrophotometric and luminescence properties of hidroxixanthene dyes in aqueous solutions. J Anal Chem SSSR 1979; 34: 807–12.
Grotte D, Mattox V, Brubaker R. Fluorescent, physiological and pharmacokinetics properties of fluorescein glucuronide. Exp Eye Res 1985; 40: 23–33.
Perrin DD & Armarego WL. Purification of laboratory chemicals. 3rd ed. New York: Pergamon Press, 1988.
Mchedlov-Petrosyan NO. Ionization constants of fluorescein. J Anal Chem SSSR 1979; 34: 812–15.
Campbell FW, Boyd TAS. The use of sodium fluorescein in assessing the rate of healing in corneal ulcers. Br J Ophthalmol 1950; 34: 545–49.
Cohen FH. Ein einfacher Apparat zur objektiven Fluorescenzmessung mittels einer Seleusperrschichtzelle. Recl Trav Chim Pays-Bas 1935; 54: 133–38.
Langham M, Wyber KC, Fluorophotometric apparatus for the objective determination of fluorescence in the anterior chamber of the living eye. Br J Ophthalmol 1954; 38: 52–57.
Rollefson GK, Dodgen HW. The dependence of the intensity of fluorescence on the composition of a fluorescing solution. J Chem Phys 1944; 12: 107–11.
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Mota, M.C., Carvalho, P., Ramalho, J. et al. Spectrophotometric analysis of sodium fluorescein aqueous solutions. Determination of molar absorption coefficient. Int Ophthalmol 15, 321–326 (1991). https://doi.org/10.1007/BF00128951
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DOI: https://doi.org/10.1007/BF00128951