Interlaboratory analytical performance studies; a way to estimate measurement uncertainty

• Autorzy: Lysiak-Pastuszak E.
• Języki publikacji: EN

Abstrakty

EN

Comparability of data collected within collaborative programmes became the key challenge of analytical chemistry in the 1990s, including monitoring of the marine environment. To obtain relevant and reliable data, the analytical process has to proceed under a well-established Quality Assurance (QA) system with external analytical proficiency tests as an inherent component. A programme called Quality Assurance in Marine Monitoring in Europe (QUASIMEME) was established in 1993 and evolved over the years as the major provider of QA proficiency tests for nutrients, trace metals and chlorinated organic compounds in marine environment studies. The article presents an evaluation of results obtained in QUASIMEME Laboratory Performance Studies by the monitoring laboratory of the Institute of Meteorology and Water Management (Gdynia, Poland) in exercises on nutrient determination in seawater. The measurement uncertainty estimated from routine internal quality control measurements and from results of analytical performance exercises is also presented in the paper.

Słowa kluczowe

EN

marine environment; nutrient; chlorinated organic compound; quality assurance; trace metal; sea water; analytical chemistry; monitoring

• Wydawca: -
• Czasopismo: Oceanologia
• Rocznik: 2004
• Tom: 46
• Numer: 3
• Opis fizyczny: p.427-438,fig.,ref.

Twórcy

autor

Lysiak-Pastuszak E.

• Institute of Meteorology and Water Management, Waszyngtona 42, 81-342 Gdynia, Poland

Bibliografia

• AMC (Analytical Methods Committee), 1989, Report on an experiment test of recommendation for the conduct and interpretation of co-operative trial, Analyst, 114, 1489 pp.
• Barwick V. J., Ellison S. L.R., 2000, Development and harmonisation of measurement uncertainty principles – Part (d): Protocol for uncertainty evaluation from validation data; VAM Project (version 5.1, January 2000), http://www.vam.org.uk/publications
• Cofino W. P., Wells D. E., 1994, Design and evaluation of the QUASIMEME interlaboratory performance studies: a test case for robust statistics, Mar. Pollut. Bull., 29, 149–158.
• Danowska B., Drgas N., Łysiak-Pastuszak E., Piechowska B., 2000, Elements of quality assurance system in nutrient and dissolved oxygen analyses, Oceanol. Stud., 4, 15–25.
• EURACHEM, 2003, EURACHEM/CITAC Guide: quantifying uncertainty in analytical measurement, http://www.uni-stuttgart.de/eurachem/pdf
• Grasshoff K., EhrhardtM., Kremling K. (eds.), 1983, Methods of sea water analysis, Verl. Chemie, Weinheim, 419 pp.
• HELCOM, 2004, Manual for the COMBINE Baltic Monitoring Programme, http://www.helcom.fi/ec.html
• Helsinki Commission, 1993, Report of the 14th meeting of the Helsinki Commission, 2–4 February, Helsinki 1993, paragraph 5.24, p. 7.
• ISO (International Organization for Standardization), 1996, ISO/IEC Guide 43–1. Proficiency testing by interlaboratory comparisons, ISO, Geneva.
• Łysiak-Pastuszak E., 1996, On quality assurance procedures in monitoring analyses of nutrients, Oceanol. Stud., 3, 3–13.
• Magnusson B., N¨aykki T., Hovind H., Krysell M., 2004, Handbook for calculation of measurement uncertainty in environmental laboratories, NORDTEST Rep. TR 537, 2nd edn., Espoo (Finland), 41 pp.
• Nehring D., 1994, Quality assurance of nutrient data with special respect to the HELCOM Baltic Monitoring Programme, Baltic Sea Environ. Proc., 58, 5–21.
• QUASIMEME (Quality Assurance of Information for Marine Environmental Monitoring in Europe), 1993, QUASIMEME Bull., 1 (March 1993),
• QUASIMEME Project Office, SOAFD Mar. Lab., Aberdeen, http://www.quasimeme.marlab.ac.uk
• QUASIMEME, 2003a, QUASIMEME Laboratory Performance Studies – Progress Report No 7 to the Advisory Board prepared by the Scientific Assessment Group, June 2003, (final version revised October 2003), http://www.quasimeme.marlab.ac.uk
• QUASIMEME, 2003b, QUASIMEME protocols and reports, http://www.quasimeme.marlab.ac.uk
• Thompson M., Wood R., 1993, The international harmonised protocol for the proficiency testing of (chemical) analytical laboratories IUPAC/ISO/AOAC, J. Pure Appl. Chem., 65, 2123–2144.
• Topping G., 1992, The role and application of quality assurance in marine environmental protection, Mar. Pollut. Bull., 25, 61–66.
• UNESCO, 1981, Background papers and supporting data on the Practical Salinity Scale 1978, UNESCO Tech. Pap. Mar. Sci. No 37.