Application of trace element and stable isotope signatures to determine the provenance of tea (Camellia Sinensis) samples
MetadataShow full item record
The reputation of particular countries, and plantations within those countries, for the production of high quality tea means that these producers can ask a significantly higher price for their specific product than average. This leads to a temptation for unscrupulous producers to fraudulently label their product as coming from one of these areas to take advantage of this higher price. A simple method for the analysis and verification of the country and plantation of origin of tea would provide security to both tea growers and consumers and would largely stamp out this illegal activity. This paper details the use of complimentary organic and inorganic isotope techniques for the analysis of tea samples from Asia. The application of linear discriminant analysis of the isotope ratios and mineral concentrations permitted 97.6% correct classification of the tea samples using the following variables delta D, delta C-13, Ti-49, Cr-53, Co-59, Ni-60, Cu-65, Ga-71, Rb-85, Sr-88, Y-89, Nb-93, Cd-111, Cs-133, Ba-138, La-139, Ce-140, Pr-141, Eu-153, Tl-203, Pb-208 and Bi-209.
Copyright © 2010 Elsevier B.V. All rights reserved
Showing items related by title, author, creator and subject.
Wieser, M.; De Laeter, John; Varner, M. (2007)Mass spectrometric studies of the isotopic composition of molybdenum have become an active area of research in stable isotope geochemistry, biogeochemistry and cosmochemistry. The redox chemistry of Mo, together with its ...
Evaluating the source, age, thermal history and palaeoenvironments of deposition of Australian and Western Canadian petroleum systems: compound specific stable isotopes coupled with inorganic trace elementsMaslen, Ercin (2010)Petroleum geochemistry is an important scientific discipline used in the exploration and production of hydrocarbons. Petroleum geochemistry involves the applications of organic geochemistry to the study of origin, formation, ...
Factors controlling the abundance and carbon isotopic composition of land-plant derived compounds in crude oils.Murray, Andrew P. (1998)This thesis describes a study in petroleum geochemistry and specifically of the application of Land-plant derived hydrocarbons to elucidating source matter type, depositional environment and thermal maturity of crude oils. ...