Abstract
Analytical figures of merit are used to evaluate the performance of instrumentation and methodology for the determination of analyte elements. The analytical characteristics of a specific manufacturer's instrumentation, types of instrumentation, options for sample introduction, and techniques used to perform quantitative analysis can be compared by their characteristic figures of merit. In addition, the repetitive determination of figures of merit during routine analysis can be used by the analyst as a diagnostic tool to evaluate the performance of their instrumentation and dictate the need for maintenance, recalibration, or troubleshooting. The primary figures of merit that are used to characterize inductively coupled plasma-mass spectrometry (ICP-MS) instruments and methods include selectivity, stability, robustness (susceptibility to interferences), sensitivity, detection limits, accuracy, and precision. The focus in this chapter is on sensitivity, detection limits, accuracy, and precision. The use of figures of merit can provide a convenient method for assisting with quality assurance monitoring.
Published Version
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