| 热电离质谱法测定龋齿牙釉质87Sr/86Sr同位素比值 |
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| 关键词:carious teeth enamel strontium isotope Sr selective specific resin |
| 基金项目:黄土与第四纪地质国家重点实验室开放基金项目(编号: SKLLQG1114);西安医学院科研基金项目(编号: 10FC17) |
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| Isotopic Measurement of Sr in Carious Teeth of Enamel by Thermal Ionization Mass Spectrometry |
| Strontium isotope of ancient human teeth provides an important scientific basis for the study of ancient population migration and palaeodietary. A fast and effective method for separation, preconcentration and isotopic determination of low-content strontium of Ca-rich tooth samples by Sr-Spec selective specific resin was established. The carious teeth of enamel were completely dissolved with HNO3-HC1O4 mixed acid. The Sr in carious teeth of enamel was separated by Sr-Spec selective specific resin, and the Sr isotope was analyzed by thermal ionization mass spectrometry. The results show that the 87Sr/86Sr ratios vary in the small range of 0.710935–0.711034, and that the isotope of Sr was similar when people lived in the same geological background. The 87Sr/86Sr ratios of male teeth have slight fluctuations, from 0.710935 to 0.711031, which may be attributed to living environments and eating habits. |
| LI Zi-xia,HE Mao-yong,LU Hai,JIN Zhang-dong,PENG Bin.2012.Isotopic Measurement of Sr in Carious Teeth of Enamel by Thermal Ionization Mass Spectrometry[J].Acta Geoscientica Sinica,33(6):893-898. |
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