Keywords: Spectrophotometry, Folic acid, 2,2'-Bipyridyl/FeCl3 Thermodynamic, Parameters
References
[1] A.A. Al-Warthan, “Flow injection chemiluminometric determination of folic acid in pharmaceutical formulations.”, Anal. Sci., 10, pp. 919–922, (1994).
[2] B. Klejdus, J. Petrlova, D. Potesil, V. Adam, R. Mikelova, J. Vacek, R. Kizek, and V. Kuban,“Simultaneous determination of water-and fat soluble vitamins in pharmaceutical preparations by high-performance liquid chromatography coupled with diode array detection”, Anal. Chim. Acta, 520, pp.57-67, (2004).
[3] D. Fruhauf and M. Juza, “ Development, optimization and validation of a sub-minute analytical enantioselective high performance liquid chromatographic separation for a folic acid precursor in normal phase mode”, J. Chromatography, A 1269, pp. 242-254, (2012).
[4] B.C. Nelson, K.E. Sharpless and L.C. Sander, “ Quantitative determination of folic acid in multivitamin–multielement tablets using liquid chromatography/ tandem mass spectrometry.”, J. Chromatogr. A, 1135, pp. 203–211, (2006).
[5] D.E. Breithaupt, “ Determination of folic acid by ion-pair RP-HPLC in vitamin fortified fruit juices after solid-phase extraction.”, Food Chem., 74, pp. 521–525, (2001).
[6] M.S.A. Pradoa, C.A. Silva, M.F. Tavaresa and K.D. Altria, “Determination of folic acid in tablets by microemulsion electrokinetic chromatography.”, J. Chromatogr. A, 1051, pp.291–296, (2004).
[7] M.J. Akhtar, M.A. Khan and I. Ahmad, “ High-performance liquid chromatographic determination of folic acid and its photodegradation products in the presence of ribofl avin”, J. Pharm Biomed Anal., 16, pp. 95–99, (1997).
[8] H.X. Guo, Y.Q. Li, L.F. Fan, X.Q. Wu, M.D. Guo, “Voltammetric behavior study of folic acid at phosphomolybdic-polypyrrole film modified electrode”, Electrochim Acta, 51, pp. 6230–6237, (2006).
[9] J. Amezdelpozo, A. Costagarica, A. Mirandaordieres and P.Tunonblanco , “Phase-selective alternatingcurrent adsorptive stripping voltammetry of folic acid on a mercury thin-film electrode”, Electroanalytes, 4, pp. 87–92,(1992).
[10] A.C. Le Gall, C. Vandenberg, “Determination of folic acid in sea water using adsorptive cathodic-stripping voltammetry”, Anal. Chim. Acta, 282, pp.459–70,(1993).
[11] D.B. Luo, “Determination of folic acid by adsorptive stripping voltammetry at the static mercury drop electrode”, Anal. Chim. Acta., 189, pp.277–283,(1986).
[12] S.W. Szczepaniak and M. Ren, “Adsorptive stripping-voltammetric determination of folic acid in pharmaceutical preparations”,Electroanalytes, 6 , pp. 505–507, (1994).
[13] J.L. Manzoori , A. Jouyban, M. Amjadi, and J. Soleymani, “ Spectrofluorimetric determination of folic acid in tablets and urine samples using 1, 10-phenanthroline-terbium probe”, Luminescence, 26(2),pp.106–111, (2011).
[14] A. Pathak and S.J. Rajput, “Simultaneous determination of a ternary mixture of doxylamine succinate, pyridoxine hydrochloride, and folic acid by the ratio spectra-zero-crossing, double divisor-ratio spectra derivative, and column high-performance liquid chromatographic methods ”, J. AOAC Int., 91(5), pp.1059–1069, (2008).
[15] P. Nagaraja, R.A. Vasantha, and H.S. Yathirajan, “Spectrophotometric determination of folic acid in pharmaceutical preparations by coupling reactions with iminodibenzyl or 3-aminophenol or sodium molybdate–pyrocatechol.”, Anal. Biochem., 307(2), pp.316–321, (2002).
[16] K. V. S. S. Murty, C. S. P. Sastry and B. G. Rao , “Spectrophotometric determination of aromatic amines using catechol and iodine”, J. Ind. Chem. Soc., 59, pp. 1107–1109, (1982).
[17] M.N. Reddy, N. Viswanadham, and C.S.P. Sastry, “Spectrophotometric methods for the determination of folic acid”, Ind. Drugs, 21, pp.460–462, (1984).
[18] F. Buhl, and U. Hachula, “Spectrophotometric determination of folic acid and other reductants using a couplet redox complexation reaction with cerium (IV) and arsenazo III”, Chemia Analiyczna, 36, pp. 27–34, (1991).
[19] M.Q. Al-Abachi and R.S.Al-Abaidi, “Spectrophotometric assay of folic acid in pharmaceutical tablets via oxidative coupling.”, Iraqi J. of Sci., 45(1), pp.24-29, (2004).
[20] D. L. Massart, B. G. M. Vandeginste, S. N. Deming, Y. Michotte and L. Kaufman, “Chemometrics: Data Handling in Science and Technology”, Elsevier, Amsterdam, Vol. 2, (1988).
[21] IUPAC, “Analytical Chemistry Division. Nomenclature, symbol, units and their usage in spectrochemical analysis. II. Data interpretation.”, Spectrochim. Acta. B, 33, pp.241-246, (1978).
[22] B.C. Karlsson, A.M. Rosengren, P.O. Andersson and I.A. Nicholls, “The spectrophysics of warfarin: Implications for protein binding.”, J. Phys. Chem., Part B, 111, pp. 10520–10528, (2007).
[23] D.S. Foster, “photometric and fluorometric methods of analysis metals”, part 1, John Wiley & Sons, Inc. ; New York , pp.750,(1978).
[24] L. G. Hargis , “Analytical chemistry: Principles and techniques”, Prentice-Hall, Inc., Englewood Cliffs, New Jersey, Ch. 23,pp. 549-568, (1988).
[25] C. Rossotti, H. Rossotti, “The Determination of stability Constant”, McGraw – Hill book company, Inc, USA, pp.23-78, (1961).
[26] P.Atkins, J.De Paula, “Physical Chemistry”, 8 th Edn. W. H. Freeman and Company, pp.212, (2006).
[27] J. Hine, “Physical Organic Chemistry”, 2nd ed., McGraw-Hill, New York, pp. 486-487, (1962).
[28] F. Khan, and L. Tantuvay,” Thermodynamics in [Mn(II)-antibiotics-bacitracin] mixed system: a polarographic approach.”, J. Pharm. Biomed. Anal., 27, pp. 933-944, (2002).
[29] A. A. Al-sarawy,” Potentiometric and thermodynamic studies of 4-sulfamethoxazoleazo-3 -methyl-2pyrazolin-5-one and its metal complexes.,”,Chem. Pap., 58( 2), pp.109-112, (2004).
[30] E. G. Akgemci and T. Atalay ,” Determination of thermodynamic parameters of some complexes of 9ethyl-3-carbazolecarboxaldehyde 4-phenyl-3-thiosemicarbazone.”, Turk. J. Chem., 24(1), pp.89-94, (2000).
[31] J.N. Miller and J.C. Miller, Statistics and chemometrics for analytical chemistry, 5th Ed., Pearson Education Limited, Harlow, England, pp.107-149, (2005).
[32] British Pharmacopoeia, H.M. Stationery Office, London, UK, 1, pp.575, (2013).