Proficiency test on the determination of mineral oil from polluted soils |
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| Authors: | I. Mäkinen Anna-Mari Suortti Seppo Pönni Sami Huhtala |
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| Affiliation: | (1) Finnish Environment Institute, Research Laboratory, P.O. Box 140, 00251 Helsinki, Finland e-mail: irma.makinen@vyh.fi Tel.: +358-9-403 000 Fax: +358-9-4030 0890, FI;(2) Pirkanmaa Regional Environment Centre, P.O. Box 297, 33101 Tampere, Finland, FI |
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| Abstract: | Mineral oil products are abundant sources of environmental contamination. A Finnishproficiency test was carried out to investigate the quality of data provided in an analysis of mineral oil in polluted soils. The homogeneity and stability of the samples were tested. The calculated concentration or the median value of the results was used as the assigned value because of the unavailability of certified reference materials (CRMs). The samples were analysed using an infrared spectroscopy (IR) or gas chromatography (GC) procedure. Even if the participating laboratories had little experience with GC, the results were promising. Hence, the GC procedure will replace IR as the new ISO standard (ISO/DIS 16703) in the near future in many Finnish environmental laboratories. There is a need for CRMs for the determination of mineral oil using the GC method due to common contamination problems caused by mineral oil. Received: 9 December 2001 Accepted: 14 February 2002 |
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| Keywords: | Mineral oil Petroleum hydrocarbon Polluted soil Proficiency test |
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