| Continuous Leach Inductively Coupled Plasma Mass Spectrometry (CL-ICP-MS) is a new analytical technique developed to address some of the shortcomings of conventional geochemical techniques. The low sensitivity of bulk leach techniques associated with matrix dilution effects are improved while simultaneously overcoming the uncertainties associated with interpreting selective extraction data. CL-ICP-MS provides information on the specific geochemical sites and mineral phases from which elements are being released using real-time data generated by continually analyzing progressively reactive solutions from water to 30% nitric acid as they are pumped through a sample directly into a high resolution ICP-MS. Mineral breakdown reactions can be monitored from the major elements released, thereby eliminating the uncertainties related to reagent specificicity often encountered in selective extraction procedures. By comparing major and minor element release patterns, trace elements can then be reliably assigned to host phases. (Abstract shortened by UMI.)... |
