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Analytical methodology currently employed for the determination of seven indicator PCBs in three compound feeds and fish meals has been evaluated by a collaborative study. The majority of the obtained relative standard deviations of the PCBs varied from 20 to 30%. By assuming a target relative standard deviation of 22% for the analytical results, the statistical evaluation showed that about 80% of the participating laboratories delivered data within an acceptable range defined by range of +/- 44% of the assigned concentration in the test materials. However, between 10 and 20% of the participating laboratories reported unacceptable results.

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Authors: VON HOLST C, JRC, Institute for Health and Consumer Protection, Ispra (IT);M?LLER A, JRC, Institute for Health and Consumer Protection, Ispra (IT)
Bibliographic Reference: An article published in: Fresenius Journal of Analytical Chemistry, Vol.371 (2001), pp.994-1000
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