Precise determination of seawater calcium using isotope dilution inductively coupled plasma mass spectrometry.

@article{Liu2014PreciseDO,
  title={Precise determination of seawater calcium using isotope dilution inductively coupled plasma mass spectrometry.},
  author={Hou-Chun Liu and C F You and Wei-Jun Cai and Chuan-Hsiung Chung and Kuo-Fang Huang and Bao-shan Chen and Yen Kuang Li},
  journal={The Analyst},
  year={2014},
  volume={139 4},
  pages={734-41}
}
We describe a method for rapid, precise and accurate determination of calcium ion (Ca(2+)) concentration in seawater using isotope dilution inductively coupled plasma mass spectrometry (ID-ICP-MS). A 10 μL aliquot of seawater was spiked with an appropriate (43)Ca enriched solution for (44)Ca/(43)Ca ID-ICP-MS analyses, using an Element XR (Thermo Fisher Scientific), operated at low resolution in E-scan acquisition mode. A standard-sample bracketing technique was applied to correct for potential… CONTINUE READING