Research Article
Multi-Element Detection in Green, Black, Oolong, and Pu-Erh Teas by ICP-MS
| Qiang Han*, Shozo Mihara, and Tatsuya Fujino | |
| Department of Chemistry, Tokyo Metropolitan University, Hachioji-Shi, Tokyo | |
| *Corresponding Author : | Qiang Han Department of Chemistry Tokyo Metropolitan University 1-1 Minami-Osawa, Hachioji-Shi Tokyo 192-0397 Tel: +81 042 6773135 Fax: +81 042 677 3135; Email: han-qiang@ed.tmu.ac.jp |
| Received May 08, 2014; Accepted May 21, 2014; Published May 28, 2014 | |
| Citation: Han Q, Mihara S and Fujino T (2014) Multi-Element Detection in Green, Black, Oolong, and Pu-Erh Teas by ICP-MS. Biochem Physiol 3:132. doi:10.4172/2168-9652.1000132 | |
| Copyright: © 2014 Han Q, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. | |
Abstract
The contents of various elements in green, black, oolong, and pu-erh teas were measured by ICP-MS. The dependence of the dissolution rate of each element on the extraction time and the number of infusion was determined. By calculating the estimated daily dietary intake as a result of consuming 15 g of tea leaves a day, it was revealed that Cr and Mn exceeded the adequate intake for one day.
