emission spectrometry (ICP-OES) and mass spectrometry (ICP-MS). Validation of method precision and accuracy emission spectrometry (ICP-OES) and mass spectrometry (ICP-MS). l Precision for elements Ag, As, Ba, Be, Ca

A study was made to evaluate the sensitivity, precision and accuracy, and practicality of isotope dilution mass spectrometry (IDMS) for bioassay of uranium, plutonium, and thorium in human urine. Precision and accuracy is excellent (about 1-3%, RSD) at co...

Mass spectrometry (MS) provides information on the masses of the sample molecule and pieces of the molecule; measurement of the mass with sufficient accuracy ('high-reason MS') also defines the elemental composition. Its most useful advantages are the sma...

Disclosed are methods for recalibrating mass spectrometry data that provide improvement in both mass accuracy and precision by adjusting for experimental variance in parameters that have a substantial impact on mass measurement accuracy. Optimal coefficients are determined ...

Desorption/Ionization on Silicon Time-of-Flight/ Time-of-Flight Mass Spectrometry Eden P. Go Siuzdak*, Center for Mass Spectrometry, The Department of Molecular Biology, The Scripps Research (DIOS) tandem time-of- flight (TOF/TOF) mass spectrometry (MS) provides high ...

The isotope dilution method of analysis was expanded to allow the addition of twenty or more enriched stable isotopes to a single sample. The method combines the survey capability of spark-source mass spectrometry with the accuracy and precision of isotop...

The parameters which affect the precision and accuracy of uranium isotopic ratios measurements by thermionic mass spectrometry are discussed. A statistical designed program for the analysis of the internal and external variances are presented. It was done...

This report describes research on factors affecting accuracy in spark source mass spectrometry (SSMS), and the application of SSMS to water related problems. This project has also involved the development of instrumental additions to improve the operation and control of SSMS proc...

Selection of which ions to monitor (parameterization) was critical to optimum analysis accuracy, precision, and speed. An empirical parameterization algorithm based on comparison of reference spectra of mixture components was developed for ion selection. Empirical algorithm parameterizations gave analysis accuracy and precision values statistically equal ...