The Effects of Acidic Medium on the Sodium Contents Determination by FAAS

Abstract:

The influence of different acidic medium, including hydrochloric acid, nitric acid and perchloric acid on the absorbance of sodium by flame atomic absorption spectrometry was studied. The results showed that the effects of acidic medium and water on the determination of sodium were as follows: hydrochloric acid > perchloric acid > nitric acid > water. Acid effect changed with the increase of acid concentration, however, the absorbance value of sodium element decreased when the concentration of acid was higher than 1%~2%. This effect was more obvious for high content of sodium. The detection limits, repeatability and recovery of the samples under the three acidic medium were compared. The optimum acid conditions were determined and the sensitivity of the method was improved.

• Periodical: Materials Science Forum (Volume 1001)
• Pages: 139-144
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.1001.139
• Online since: July 2020
• Authors: Ying Li*, Ben Tao Li, Guang Yu Sun, Hui Huang, Chen Gong, Xia Liu, Yong Shen
• Keywords: Acidic Medium, Flame Atomic Absorption Spectrometry, Sensitivity, Sodium

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