Uthe J F, Musial C J
Department of Fisheries and Oceans, Marine Chemistry Division, Halifax, Nova Scotia, Canada.
J Assoc Off Anal Chem. 1988 Mar-Apr;71(2):363-8.
Twenty-five laboratories were sent 2 materials, one an acetone powder of lobster digestive gland, the other, the oil which had been extracted during preparation of the powder. Each laboratory was requested to measure the levels of a suite of polycyclic aromatic hydrocarbons in both materials. The response was poor with only 10 laboratories submitting results. Both intra- and interlaboratory precisions were poor; the interlaboratory error was so great as to preclude statistical analysis of the error. Relative standard deviations for oil results determined by liquid chromatography ranged from 39 to 96%.
