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Determination of iodine content in milk and food supplements by inductively coupled plasma mass spectrometry (ICP-MS)

Published 02/28/2019

Article Details

How to Cite
Dinh Viet Chien, Pham Cong Hieu, Nguyen Bao Thoa, Nguyen Minh Chau, Le Van Ha, Vu Thi Bich Phuong, Nguyen Van Ri, Nguyen Thi Anh Huong, Le Thi Hong Hao. "Determination of iodine content in milk and food supplements by inductively coupled plasma mass spectrometry (ICP-MS)". Vietnam Journal of Food Control. vol. 2, no. 1, pp. 9-14, 2019
PP
9-14
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273

Main Article Content

Abstract

The determination of iodine in milk and food supplements by inductively coupled plasma mass spectrometry (ICP-MS) was investigated. Several parameters of the equipment were optimized automatically such as power of radio frequency, nebulizer gas, and voltage of ion lens. Iodine was extracted from samples by using 2% HNO3 with ultrasonic at 80ºC. Sample solutions were adjusted to the pH of 9÷10 by using ammonium hydroxide, and then filtered by using a 0.45 µm membrane before being analyzed by means of ICP-MS. The method has good repeatability and high recovery efficiency that are suitable for the determination of iodine in milk and food supplements.

Keywords:

Iodine, ICP-MS, food

References

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2. AOAC 2012.14 (2012), Total Iodine in Infant formula and nutritional products by Inductively coupled plasma mass spectrophotometry.
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