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Statistical behavior of ten million experimental detection limits
Authors:Edward Voigtman  Kevin T. Abraham
Affiliation:a Department of Chemistry, University of Massachusetts, Amherst, 710 N. Pleasant St., Amherst, MA 01003-9336, United States
Abstract:Using a lab-constructed laser-excited fluorimeter, together with bootstrapping methodology, the authors have generated many millions of experimental linear calibration curves for the detection of rhodamine 6G tetrafluoroborate in ethanol solutions. The detection limits computed from them are in excellent agreement with both previously published theory and with comprehensive Monte Carlo computer simulations. Currie decision levels and Currie detection limits, each in the theoretical, chemical content domain, were found to be simply scaled reciprocals of the non-centrality parameter of the non-central t distribution that characterizes univariate linear calibration curves that have homoscedastic, additive Gaussian white noise. Accurate and precise estimates of the theoretical, content domain Currie detection limit for the experimental system, with 5% (each) probabilities of false positives and false negatives, are presented.
Keywords:Limit of detection   Detection limit   Currie   Non-central t distribution   Bootstrapping
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