PubMed · 4916240
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V G Balamutov, P N Belonofiĭ, V G Videnskiĭ, V I Ivanov, B M Isaev, V G Kolotilova, A N Krongauz. 1970. [Microdosimetry].. https://pubmed.ncbi.nlm.nih.gov/4916240/
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Detection limit parameters such as the minimum detectable concentration have been widely discussed in the literature for more than 30 y. Misunderstanding and misapplication of these parameters continue to be widespread and, indeed, even encoded into computer programs, especially those developed in recent years for use with PC-based analyzer boards. This brief review of the principal concepts related to the most common types of detection limits provides guidance for correctly using these parameters. In particular, several myths concerning issues such as the "sample-specific minimum detectable concentration" and the "unreliability" of measurements made below this concentration are discussed.
Many details of the liquid scintillation method for the determination of waterborne Rn have underappreciated effects on the measurement. This paper quantifies effects arising from the type of cocktail, vial, standardization procedure, temperature control, and instrument parameters chosen in the procedure. Comments are made on sampling procedures. Details are provided that allow an optimization of the technique so that concentrations approaching 8 Bq dm-3 (200 pCi L-1) can be measured reliably with a precision (2 sigma) of 20% when counting times are only 20 min.