The aim of this study was to determine the sixteen rare earth elements (REEs) in twelve types of popular fl ower herb teas and their infusions consumed in China. Microwave-assisted acid digestion was used for all of the samples, and the contents of these elements were determined by inductively coupled plasma mass spectrometry (ICP-MS). The concentrations of REEs varied from 94.6 to 7492 µg kg -1 among these fl ower samples. Ce was the most abundant elements in all fl ower samples (27.3-3016 µg kg -1). The leached ratios of REEs for each type of tea ranged from 7.3% (globe amaranth) to 29.8% (carnation). The leach ratios of REEs in these fl ower herb teas were at different percentages depending on types of fl owers. The daily intake of rare earth oxides from these fl ower herb tea infusions may not produce any health risks.
The contents of 6 kinds of heavy metals (Pb, Cr, Cd, As, Cu, Ni) in moso bamboo shoot were measured by inductively coupled plasma-mass spectroscopy (ICP-MS). The health risk of the 6 kinds of heavy metals was assessed by the target hazard quotients (THQ). The mean contents of Pb, Cr, Cd, As, Cu and Ni in all analyzed bamboo shoots
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