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Abstract: Mineral elements are essential components for human health from food, but their contents in wheat, millet, corn and soybean have not been compared. Contents of mineral elements in wheat, millet, corn and soybean from Beijing market of China were detected by ICP-MS. The RSDs (relative standard deviation) range from 0.85% to 3.52% and the detecting limits range from 0.13 to 0.85μg/L, which showed that this method is accurate and precise to detect mineral elements in grains simultaneously. The data showed that (1) ICP-MS is a simple and precise method to determine many mineral elements in grains simultaneously. (2) Elements followed by descending order in four grains are usually K>Mg>Ca>Fe>Zn>Mn>Cu>Mo>Li, and grains arranged in order from high to low levels of mineral elements are usually soybean>millet>wheat≈corn. So we should take in more minor grains, such as soybean and millet on daily diet. [Copyright &y& Elsevier]

The contents of mineral elements in wild traditional Tibetan medicines Fritillaria ussuriensis and Gastrodia elata from Tibet were determined by ICP-MS to study their efficacy mechanism and quality. The results showed that wild Gastrodia elata contained more Ca, Fe and Mn than F. ussuriensis , and less Zn, which proved that different traditional Tibetan medicines had different abilities to absorb mineral elements, which should be relative to their efficacy. Compared with F. ussuriensis , Gastrodia elata contained more Pb, Cr and Se, and less Cd and As. Referred to relative standards, toxic elements’ content in Gastrodia elata is not excessive, but Cd in F. ussuriensis was much higher than that of standard. [ABSTRACT FROM AUTHOR]