Strontium isotope ratios

Honma, H. and Shuto, K. (1979) On strontium isotope ratio of barite from Kuroko-type deposits, Japan. 

Price, T. D., J. H. Burton, and R. A. Bentley (2002), The characterization of biologically available strontium isotopes ratios for the study of prehistoric migrations, Archaeometry 44(1), 117-135. 

Negrel Ph, Allegre CJ, Dupre B, Lewin E (1993) Erosion sources determined by inversion of major and trace element ratios and strontium isotopic ratios in river water the Congo Basin case. Earth Planet Sci Lett 120 59-76... 

Grape, G., Price, T.D., Schroter, P., Sollner, F., Johnson, C.M. and Beard, B.L. (1997). Mobility of Bell Beaker people revealed by strontium isotope ratios of tooth and bone a study of southern Bavarian skeletal remains. Applied Geochemistry 12 517-525. 

Inherent in all these methodologies, which measure either absolute Sr levels or strontium isotope ratios in mineralized tissue, is the assumption that diagenesis has not altered the signal since death. This has been a matter of some considerable debate (e.g., Nelson et al. 1986), but the consensus of current opinion amongst practitioners is that the repeated acid-washing procedures used remove any diagenetic mineral, because it has a higher... 

Figure 4. Change in ratios versus time after EOB for the strontium isotope ratios 82 85 and 83 82. "Limit" refers to the radionuclidic requirements listed in Table III.

The measured strontium isotope ratios of modem guinea pigs from Ayacucho support the expected strontium isotope ratios based on the geologic... 

As shown in Table I, the strontium isotope ratios from the human burials at Conchopata are all very similar (87Sr/8 Sr=0.7058 0.0003 (n=ll, lo)). Specifically, enamel samples from five adults buried in the tombs at Conchopata have 87Srr6Sr=0.705480-0.705646, while bone samples from the same adults have "Sr/ Si OJOSbeS-frJObOQb. The infant bone from EA 06 has 87Sr/86Sr=0.706734. 

In addition to contact with the burial environment, the trophy head samples had been burned, presumably during ritual activities in the structures in which they were found (/, 21, 22). Although experimental data has shown that postmortem burning can change the 5I3C values in bone collagen, this is not the case for strontium isotope ratios (78). 

Strontium isotope signatures in tooth enamel and bone from five adults and one infant buried in two tombs at Conchopata are very similar. This implies that these individuals consumed food from the same geologic zone, or from geologic zones with similar strontium isotope signatures. Since the strontium isotope ratios in these individuals matched the expected Ayacucho Basin strontium isotope signature, it is most likely that these individuals lived in or near Conchopata for the first and last years of life. 

Sr). Over the past 30 years, lead and strontium isotope ratios have been measured with thermal ionization mass spectrometry (TIMS). Elemental salts are deposited on a filament heated to produce ionized particles, which are then sent into a mass spectrometer where they are detected by multiple Faraday cups arrayed such that ions of several masses are collected simultaneously. TIMS is capable of high precision isotope discrimination, but the instruments tend to be large and expensive, and extensive sample preparation is required prior to sample introduction. Newer ICP-MS-based technologies like multi-collector ICP-MS (especially laser ablation) circumvent some of the sample preparation issues while exploiting the precision of simultaneous mass discrimination, but they are still limited by the number and configuration of ion collectors. 

A similar set of experiments was performed to test our ability to precisely characterize strontium isotopes. For the archaeological chemistry of biological remains, strontium isotopes are useful for testing dietary hypotheses and for examining differences in place of birth and place of residence. To test the precision of strontium isotope ratio measurement using TOF-ICP-MS, we made glass fusion beads using NIST Strontium Carbonate Standard SRM 987 and... 

Artifact exportation limits, 506-507 Augustus. See Octavian Australia, Katipiri Formation, ESR dating of teeth, 3,5,61 Ayacucho, strontium isotope ratios, modem guinea pigs, 104-106 Aztec human sacrifices, sex determination by aDNA techniques, 79-80... 

Guinea pigs from Ayacucho, strontium isotope ratios, 104-106... 

Human burials at Conchopata, strontium isotope ratios, 105/,... 

G. Fortunato, K. Mumic, S. Wunderli, L. Pillonel, J. O. Bosset, G. Gremaud, Application of strontium isotope ratios measured by MC-ICP-MS for food authentication, J. Anal. Atom. Spectrom., 19 (2004), 227-234. 

A. Kawasaki, H. Oda, T. Hirata. Determination of rice provenance using strontium isotope ratio and levels of selected trace elements of rice, Trans. World Congr. Soil Sci., (2002), 2019/1-2019/9. 

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