Determination of total iodine using ICP-MS in Israeli bottled and tap water: method development and application

Authors

Vasiliy Rosen¹ , Orit Gal-Garber¹ , Yuliana Andruschenko¹ , Yona Chen¹

1. The Hebrew University of Jerusalem

Conference / event

European Winter Conference on Plasma Spectrochemistry, January 2023 (Ljubljana, Slovenia)

Poster summary

An accurate and precise method of iodine determination in drinking water using ICP-MS was developed. The method LOQ (considering the 2-fold dilution of the sample and possible memory effect) was <0.1 µg I L-1. Use of an alkaline matrix (2% NH4OH + 0.1% EDTA) for sample dilution and calibration standard preparation prevented carbonate precipitation and, as a result, nebulizer clogging. A sampling of the bottled mineral water brands available in the Israeli market demonstrated relatively low average iodine content (7.68±2.41 µg L-1 ). The measurement of total iodine concentration in tap water samples across Israel revealed a decrease in the present-day iodine status compared with the data from literature sources. We observed 0.3 – 12.3 µg I L-1 (median values); however, approximately 5 – 50 µg I L-1 was recommended by other researchers as a risk-reducing concentration.

Keywords

Tap water, Total iodine, ICP-MS, Bottled water, Alkaline media

Research areas

Chemistry, Environmental Sciences

References

1. V.V. Rosen, O.G. Garber, Y. Chen, Iodine determination in mineral water using ICP-MS: Method development and analysis of brands available in Israeli stores, Journal of Food Composition and Analysis, 111 (2022) 104600.

Funding

No data provided

Supplemental files

No data provided

Additional information

Competing interests

No competing interests were disclosed.

Data availability statement

The datasets generated during and / or analyzed during the current study are available from the corresponding author on reasonable request.

Creative Commons license

Copyright © 2023 Rosen et al. This is an open access work distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.