Determination of Potassium Iodate in Edible Salt by Potassium Iodide-Iodine-Starch System

Xinrong Wen, Xinrong Wen, Changqing Tu, Changqing Tu

2022

Abstract

In acidic medium, ki can react with kio3 to form i2, then i2 and starch form i2-starch blue complex with a maximum absorption wavelength of 596 nm. Beer's law is obeyed between the kio3 content and the absorbance of i2-starch blue complex. Base on this, the kio3 content can be determined indirectly. A novel method for the determination of potassium iodate in edible salt by potassium iodide-iodine-starch system has been established. The various effect factors on the determination of iodide by potassium iodide-iodine-starch system are investigated in detail. Under optimal conditions, when the mass concentration of kio3 is 0.4000~1.280 µg/ml, the linear regression equation is a=-0.0649+0.04702c (µg/ml) with the linear correlation coefficient is 0.9992. this proposed method had been successfully applied to determinate kio3 in edible salt, and the results agree well with those by standard method.

Paper Citation

in Harvard Style

Wen X. and Tu C. (2022). Determination of Potassium Iodate in Edible Salt by Potassium Iodide-Iodine-Starch System. In Proceedings of the 4th International Conference on Biotechnology and Biomedicine - Volume 1: ICBB; ISBN 978-989-758-637-8, SciTePress, pages 21-26. DOI: 10.5220/0012012100003633

in Bibtex Style

@conference{icbb22,
author={Xinrong Wen and Changqing Tu},
title={Determination of Potassium Iodate in Edible Salt by Potassium Iodide-Iodine-Starch System},
booktitle={Proceedings of the 4th International Conference on Biotechnology and Biomedicine - Volume 1: ICBB},
year={2022},
pages={21-26},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0012012100003633},
isbn={978-989-758-637-8},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 4th International Conference on Biotechnology and Biomedicine - Volume 1: ICBB
TI - Determination of Potassium Iodate in Edible Salt by Potassium Iodide-Iodine-Starch System
SN - 978-989-758-637-8
AU - Wen X.
AU - Tu C.
PY - 2022
SP - 21
EP - 26
DO - 10.5220/0012012100003633
PB - SciTePress