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2660200 
Journal Article 
Quantitative Analysis of Sodium Carbonate and Sodium Bicarbonate in Solid Mixtures Using Fourier Transform Infrared Spectroscopy (FT-IR) 
Joshi, S; Kalyanasundaram, S; Balasubramanian, V 
2013 
Yes 
Applied Spectroscopy
ISSN: 0003-7028 
67 
8 
841-845 
23876722 
WOS:000322559700004 
An analytical methodology is proposed based on constant ratio and absorbance correction methods to quantify sodium carbonate, Na2CO3 (1450 cm(-1)), and sodium bicarbonate, NaHCO3 (1000 cm(-1), 1923 cm(-1)), in solid mixtures using Fourier transform infrared (FT-IR) spectroscopy. Potassium ferricyanide, K3Fe(CN)(6) (2117cm(-1)), was used as an internal standard to get characteristic parameters. NaHCO3 was quantified using the constant ratio method. Spectral interference of NaHCO3 in Na2CO3 (1450 cm(-1)) was corrected using the absorbance correction method. The corrected absorbance was successfully applied to quantify Na2CO3 (1450 cm(-1)) in the mixture using the constant ratio method. The results obtained for simulated samples were satisfactory (relative standard deviation less than 7%) for all samples. 
Fourier transform infrared spectroscopy; FT-IR; Constant ratio method; Absorbance correction method; Sodium carbonate; Sodium bicarbonate; Internal standard; Liquid metal-cooled fast breeder reactors (LMFBR)