Potential of Multi-Element Isotopic Approach for Geographical Origin Discrimination of Tea |
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| Ekaterina Epova, Sylvain Bérail, Bernard Médina, Julien Barre |
- Abstract:
- The determination of strontium and lead isotope abundance ratios by MC-ICP-MS (multicollection inductively coupled plasma mass spectrometry) has been applied to 28 authentic teas from various origin. A noticeably different value of 87Sr/86Sr has been obtained for Japanese tea. A distinctive trend of Pb-isotope ratios has been observed for the different geographic regions of sample origin. The combination of isotopic and elemental concentrations tremendously increases the discrimination possibilities compared to a single isotopic or elemental system.
- Keywords:
- geographic origin, food authenticity, strontium isotopes, lead isotopes, MC-ICP-MS
- Download:
- IMEKO-TC23-2016-024.pdf
- DOI:
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