flame photometry

flame photometry

1. FLAME PHOTOMETRY PRESENTED BY, YOGITA RAYATE M.pharm first year Pharmaceutics

2. INTRODUCTION • Flame photometry (more accurately called Flame Atomic Emission Spectrometry)is a branch of spectroscopy in which the species examined in the spectrometer are in the form of atoms • A photoelectric flame photometer is an instrument used in inorganic chemical analysis to determine the concentration of certain metal ions among them sodium, potassium, calcium and lithium. • Flame Photometry is based on measurement of intensity of the light emitted when a metal is introduced into flame.

3. LIMITATIONS Limited number of elements that can be analyzed. The sample requires to be introduced as solution into fine droplets. Many metallic salts, soil, plant and other compounds are insoluble in common solvents. Hence, they can’t be analyzed by this method. Since sample is volatilized, if small amount of sample is present, it is tough to analyze by this method. As some of it gets wasted by vaporization. Further during solubilisation with solvents, other impurities might mix up with sample and may lead to errors in the spectra obse

4. REFERENCES- A TEXTBOOK OF PHARMACEUTICAL ANALYSIS,VOL.2 nd ,BY Dr.A.V . KASTURE&Dr.K.R.MAHADIK,PAGES-23.1to23.8 INSTRUMENTAL METHODS OF CHEMICAL ANALYSIS,1 st EDITION,BY GURDEEP CHATWAL,PAGES-2.367 -2.380

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