Determination of trace metals in tea using both microwave digestion at atmospheric pressure and inductively coupled plasma atomic emission spectrometry

Influence of brewing pots on mineral content of black tea infusions

“…Most of the studies carried out on tea samples were generally concentrated on tea leaves [15,20,21,24,25]. However, the studies made on the analysis of mineral quantities passing to the brew were limited [14,18,19,21].…”

Determination of multi element levels in leaves and herbal teas from Turkey by ICP-OES

“…Fe can be widely found in nature and is one of the most important elements in environmental and biological systems as many kinds of compounds [29]. Fe is a necessary and useful element for organisms and a significant part of tissue and blood in animal and human bodies [8].…”

“…Fe is a necessary and useful element for organisms and a significant part of tissue and blood in animal and human bodies [8]. Fe is essentially distributed in hemachrome that occupies 60-70% of the total Fe in a body [29]. Our study on the herbal tea leaves Fe levels found to be 185.0±0.4 and 752.0±0.4 µg/g in the digestion and from 2.0±0.1 to 165.0±0.4 µg/g in the infusion and 18.0±0.1 and 1471.0±0.3 µg/g in the digestion and from 5.0±0.3 to 869.0±0.7 µg/g in the infusion.…”

Multielement Determination and Speciation of Major-to-Trace Elements in Black Tea Leaves by ICP-AES and ICP-MS with the Aid of Size Exclusion Chromatography

“…Therefore, in the studies on elemental analysis for tea samples, the extraction efficiency is generally examined to characterize the dissolved components of analyte elements in tea infusions. [10][11][12] The tea infusion samples extracted from black tea leaves were also analyzed in the present experiment in order to evaluate the extraction efficiencies; 35 elements could be determined by ICP-AES and ICP-MS. The results are summarized in Table 2.…”