87Sr/86Sr isotope composition of bottled British mineral waters for environmental and forensic purposes |
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| Institution: | 1. MLR Key Laboratory of Metallogeny and Mineral Assessment, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, PR China;2. No. 2 Geoexploration Party of Henan Bureau of Geoexploration and Mineral Development, Xuchang 461000, PR China;3. Inner Mongolia Institute of Geological Survey, Hohhot 010020, PR China;4. School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, PR China;5. Chinese Academy of Geological Sciences, Beijing 100037, PR China |
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| Abstract: | Mineral waters in Britain show a wide range of 87Sr/86Sr isotope compositions ranging between 87Sr/86Sr = 0.7059 from Carboniferous volcanic rock sources in Dunbartonshire, Scotland to 87Sr/86Sr = 0.7207 in the Dalradian aquifer of Aberdeenshire, Scotland. The 87Sr/86Sr composition of the waters shows a general correlation with the aquifer rocks, resulting in the waters from older rocks having a more radiogenic signature than those from younger rocks. This wide range of values means that the Sr isotope composition of mineral water has applications in a number of types of studies. In the modern commercial context, it provides a way of fingerprinting the various mineral waters and hence provides a method for recognising and reducing fraud. From an environmental perspective, it provides the first spatial distribution of bio-available 87Sr/86Sr in Britain that can be used in modern, historical and archaeological studies. |
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