This data paper describes a public database of bioavailable strontium isotope ratios built from plant and soil samples across France. Such maps let researchers in archaeology, ecology, food and forensic science compare a sample’s isotope ratio with local baselines. The paper reports sampling and analytical methods and how to access the data.
Key numbers
- The data set contained 840 sample locations at the time of writing (p. 118).
- This paper reports isotope ratios, not strontium concentrations relevant to exposure.
Methods (brief)
Plants and soils were collected at sites on major geologic units; soil leachates and plant digests were purified and measured for strontium isotope ratios by multi-collector ICP-MS at the Australian National University, normalized to the NIST SRM 987 standard.
Evidence fitness
Supports use of strontium isotope ratios as a geographic fingerprint, including for food provenance. It does not support exposure, concentration or toxicity claims.
Limitations
Isotope ratios only; strontium concentrations are not the focus. Coverage reflects sampling density across geologic units.
Related evidence
Update history
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