Citation:
LU Hai, LIU Yi-Can, WANG Jun, ZHOU Yuan-Jing, REN Tong-Xiang, ZHOU Tao. Exploration of Mg Isotope Analysis for Identification of Different Original Wine[J]. Chinese Journal of Analytical Chemistry,
;2012, 40(10): 1598-1601.
doi:
10.3724/SP.J.1096.2012.20143
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A technique for separation of Mg, with 101.6%±1.2% yield from wine has been developed for high precision analysis of Mg isotopes by multiple-collector inductively coupled plasma mass spectrometry. One separate stage of ion-exchange chromatography was carried out using cation exchange resin, AG50W-X8 and elution with 1 mol/L HNO3. A mixture of H2 (2.1 mL/min) and He (7.0 mL/min) was performed to decrease isobars of 12C12C+, 12C21H+ during Mg isotope analysis by MC-ICP-MS technique along with SSB method. 40 wines were analyzed then. 26Mg/24Mg and 25Mg/24Mg show significant variation, this implies that Mg can be a good tracer to tracing geographical origin of wine with good geographical resolution. The samples with similar Mg isotopic compositions can be distinguished by the combined technique of Mg isotope analysis with inorganic elements analysis.
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Keywords:
- Magnesium,
- Isotope,
- Wine,
- Original tracing
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