Charles M. Beck

TL;DR: A solution-based inductively coupled plasma optical emission spectrometric method is described for elemental analysis with relative expanded uncertainties on the order of 0.1% relative, resulting from a suite of technical strategies that exploit the strengths of contemporary spectrometers, address measurement and sample handling noise sources, and permit rugged operation with small uncertainty.

TL;DR: In this paper, it was shown that there is a negligible enthalpy difference between the α- and β-forms of Si 3 N 4 at the temperature 298.15 K.

TL;DR: A gravimetric method for the determination of sulfate in a sulfate solution standard by the precipitation of barium sulfate is coupled with the instrumental determination of trace sulfate and precipitate contaminants to improve the accuracy and precision of the analysis as discussed by the authors.

TL;DR: The results for the quality control, SRM 2704 (Buffalo River Sediment), were in good agreement with the certified values, indicated by the uncertainty intervals of the measured values overlapping the certified intervals at 95% confidence level.

TL;DR: In this paper, the massic energies of combustion of two pentatungsten trisilicide samples were investigated by fluorine-combustion calorimetry. But, the results were derived for the standard molar enthalpies of formation Δ f H m °(W 5 Si 3 + x ) at temperature T = 298.15 K and standard pressure p ° = 101.325 kPa, and the uncertainties were −(126 ± 18) kJ·mol −1 for x = 0, and −(97 ± 20)kJ