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Publikācija: Differences between Uncertainties of Environmental Analyses and Uncertainties of Other Chemical Analyses

Publication Type Conference paper
Funding for basic activity Unknown
Defending: ,
Publication language English (en)
Title in original language Differences between Uncertainties of Environmental Analyses and Uncertainties of Other Chemical Analyses
Field of research 2. Engineering and technology
Sub-field of research 2.7 Environmental engineering and energetics
Authors Daina Kalniņa
Indulis Stikāns
Aiga Ivdre
Keywords Environmental analyses, uncertainties, mathematical model, control charts
Abstract The sample matrix is one of the main sources contributing to the uncertainly of results obtained in the testing of environmental samples. The sample matrix is very difficult to quantify as a component of uncertainly, as it requires a large amount of experimental data. Efforts were made to estimate the sample matrix’s effect and expanded uncertainly for some key environmental (Bio) Technologies test methods : COD, BOD, suspended solids, P, and oil products. Statistical methods were used in the treatment of experimental data received from method validation, quality assurance and quality control measures. Results showed that uncertainly evaluated using a mathematical model incorporating all individual uncertainly components is not significantly different from the uncertainly calculated directly from experimental data (X-control charts) characterizing overall method performance.
Reference Kalniņa, D., Stikāns, I., Pabērza, A. Differences between Uncertainties of Environmental Analyses and Uncertainties of Other Chemical Analyses. In: International Conference ”Environmental (Bio) Technologies & EU-FP7 Environment Brokerage Event”: Abstracts, Poland, Gdansk, 5-8 September, 2011. Gdansk: Polish Ministry of Science and Higher Education, 2011, pp.32-32.
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