An appraisal of ICP-MS technique for determination of REEs: long term QC assessment of Silicate Rock Analysis

作者：Khanna P P^*; Saini N K; Mukherjee P K; Purohit K K

来源：Himalayan Geology, 2009, 30(1): 95-99.

Silicate rocks, being geochemically most complex material, pose great difficulties in accurate and precise measurement of ultra-trace abundance of elements like rare earths. The performance of a quadrupole type inductively coupled plasma mass spectrometer (ICP-MS) in this regard, was evaluated for determination of fourteen rare earth elements (REEs) in silicate rock samples. Complete analytical procedure adopted for routine determination of these elements using ICP-MS is described. All the determinations were carried out against well characterized reference rock materials. Possibility of determining REEs without using any internal standard was explored. It was noted that determinations without internal standard are well within the acceptable limits of errors provided the calibration standard is judiciously chosen. Single standard calibration is found valid for a wide range of concentrations because of the wide dynamic linear range of the technique.

• 出版日期2009