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  • Title: Application of strategically designed sample composition to the rapid analytical screening of milk samples for polychlorinated biphenyls.
    Author: Martínez E, Pazos M, Carro AM, Llompart M, Cela R.
    Journal: J AOAC Int; 2003; 86(4):846-55. PubMed ID: 14509446.
    Abstract:
    Strategically designed sample composition (SSC) is a new technique that decreases the number of analytical determinations needed in routine screening to as few as the number of original sample specimens while providing information that is specific to them. Although this new technique has been applied to environmental studies, this paper describes its first application to food safety studies. Contamination of milk samples with polychlorinated biphenyls (PCBs) was chosen as a case study to show the usefulness and potential of the SSC technique with a fast analytical procedure that involves saponification of the samples and solid-phase microextraction of the PCBs. A total of 20 sample specimens can be analyzed in 11 determinations with excellent predictions of the positive samples and the concentration levels of the contaminants. The robustness of the strategy was investigated and demonstrated.
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