TY - JOUR
T1 - High-precision direct determination of the 87Sr/86Sr isotope ratio of bottled Sr-rich natural mineral drinking water using multiple collector inductively coupled plasma mass spectrometry
AU - Yang, Yue-Heng
AU - Wu, Fu-Yuan
AU - Xie, Lie-Wen
AU - Yang, Jin-Hui
AU - Zhang, Yan-Bin
PY - 2011/8
Y1 - 2011/8
N2 - We describe a precise and accurate method for the direct determination of the 87Sr/86Sr isotope ratio of bottled Sr-rich natural mineral drinking water using multiple collector inductively coupled plasma mass spectrometry (MC-ICP-MS). The method is validated by the comparative analysis of the same water with and without cation-exchange resin purification. The work indicates that isobarically interfering elements can be corrected for when 87Rb/86Sr < 0.05 (Rb/Sr < 0.015), and that the matrix elements (Ca, Mg, K and Na) have no significant effect on the accuracy of the Sr isotope data. The method is simple, rapid, eliminates sample preparation time, and avoids potential contamination during complicated sample-preparation procedures. Therefore, the high sample throughput inherent to the MC-ICP-MS can be fully exploited.
AB - We describe a precise and accurate method for the direct determination of the 87Sr/86Sr isotope ratio of bottled Sr-rich natural mineral drinking water using multiple collector inductively coupled plasma mass spectrometry (MC-ICP-MS). The method is validated by the comparative analysis of the same water with and without cation-exchange resin purification. The work indicates that isobarically interfering elements can be corrected for when 87Rb/86Sr < 0.05 (Rb/Sr < 0.015), and that the matrix elements (Ca, Mg, K and Na) have no significant effect on the accuracy of the Sr isotope data. The method is simple, rapid, eliminates sample preparation time, and avoids potential contamination during complicated sample-preparation procedures. Therefore, the high sample throughput inherent to the MC-ICP-MS can be fully exploited.
KW - ⁸⁷Sr/⁸⁶Sr isotope ratio
KW - bottled Sr-rich natural mineral drinking water
KW - direct determination
KW - multiple collector ICP-MS
UR - http://www.scopus.com/inward/record.url?scp=80052895029&partnerID=8YFLogxK
U2 - 10.1016/j.sab.2011.07.004
DO - 10.1016/j.sab.2011.07.004
M3 - Article
AN - SCOPUS:80052895029
SN - 0584-8547
VL - 66
SP - 656
EP - 660
JO - Spectrochimica Acta - Part B Atomic Spectroscopy
JF - Spectrochimica Acta - Part B Atomic Spectroscopy
IS - 8
ER -