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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 shu

Exploration of Mg Isotope Analysis for Identification of Different Original Wine

LU Hai ^1,, ,
LIU Yi-Can ² ,
WANG Jun ¹ ,
ZHOU Yuan-Jing ¹ ,
REN Tong-Xiang ¹ ,
ZHOU Tao ¹

1.
¹ Division of Metrotogy in Chemistry, National Institute of Metrology, Beijing 100013, China;

Corresponding author: LU Hai,
Received Date: 19 February 2012
Available Online: 8 May 2012
Fund Project: 本文系中国计量科学研究院基本业务费基金(No.21-JB1250)资助项目 (No.21-JB1250)

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.
- Magnesium,
- Isotope,
- Wine,
- Original tracing
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