Quality assurance and quality control (QA/QC) for in-situ geochemical methods, estimation of measurement uncertainty and construction of probability risk assessment maps / Обеспечение и контроль качества (ОК/QC) геохимических методов in-situ

This document gives guidelines for taking duplicate measurements by in-situ analytical instruments, or collecting duplicate samples for analysis in the mobile field laboratory, to assess random errors originating from sampling and analytical procedures, and to estimate the uncertainty of measurements. Since, NORISC is dealing with the assessment of contamination of small-size areas within cities, and relies mainly on in-situ analytical methods, a cost-effective technique, using robust analysis of variance for the estimation of necessary quality control parameters, and measurement uncertainty, is explained with examples <...>