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Applied Spectroscopy

Applied Spectroscopy

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  • Vol. 67, Iss. 8 — Aug. 1, 2013
  • pp: 841–845

Quantitative Analysis of Sodium Carbonate and Sodium Bicarbonate in Solid Mixtures Using Fourier Transform Infrared Spectroscopy (FT-IR)

Shailesh Joshi, Sivasubramanian Kalyanasundaram, and Venkatraman Balasubramanian

Applied Spectroscopy, Vol. 67, Issue 8, pp. 841-845 (2013)


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Abstract

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.

Citation
Shailesh Joshi, Sivasubramanian Kalyanasundaram, and Venkatraman Balasubramanian, "Quantitative Analysis of Sodium Carbonate and Sodium Bicarbonate in Solid Mixtures Using Fourier Transform Infrared Spectroscopy (FT-IR)," Appl. Spectrosc. 67, 841-845 (2013)
http://www.opticsinfobase.org/as/abstract.cfm?URI=as-67-8-841


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