Determination of Ternary Mixtures of Vitamins B1 B6 B12 by Zero Crossing Derivative Spectrophotometry


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KOYUNCU İ. , ÖZGÜR M.

Turkish Journal of Chemistry,, cilt.26, ss.385-391, 2002 (SCI Expanded İndekslerine Giren Dergi) identifier

  • Cilt numarası: 26 Konu: 3
  • Basım Tarihi: 2002
  • Dergi Adı: Turkish Journal of Chemistry,
  • Sayfa Sayıları: ss.385-391

Özet

A new method for determining ternary mixtures of vitamin B1; B6 and B12 using second derivative

spectrophotometry is described. The procedure is accurate, nondestructive and does not require any

separation step or the solving of equations. Calibration graphs were linear up to 20 gml

−1 of vitamin B1 at 228.9 nm (r=0.9999), vitamin B6 at 309.6 nm (r=0.9999) and vitamin B12 at 361.7 nm (r=0.9998).

The method was successfully applied for analyzing synthetic mixtures and commercial pharmaceutical

preparations.