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

作者

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

1. The Hebrew University of Jerusalem

会议/活动

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

海报摘要

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.

关键词

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

研究领域

Chemistry, Environmental Sciences

参考文献

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.

基金

暂无数据

补充材料

暂无数据

附加信息

利益冲突

No competing interests were disclosed.

数据可用性声明

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

知识共享许可协议

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.