Journal
JOURNAL OF CHROMATOGRAPHY A
Volume 880, Issue 1-2, Pages 69-83Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0021-9673(00)00240-5
Keywords
reviews; extraction methods; beta-agonists
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Normally, different procedures were necessary to prepare sample matrices for chromatographic determination of beta(2)-agonists. The present review includes sampling, pre-treatment and extraction/purification for urine, plasma, liver, meat, feeds, hair and milk powder, as previous steps for chromatographic analysis of beta(2)-agonists. Six methodologies were especially revised for extraction/purification namely, liquid-liquid extraction, solid-phase extraction (SPE), matrix solid-phase dispersion, immunoaffinity chromatography, dialysis and supercritical fluid extraction. SPE was discussed in detail and five mechanisms were described: adsorption, apolar, polar, ion-exchange and mixed phase. A brief conclusion in this field was also outlined. (C) 2000 Elsevier Science B.V. All rights reserved.
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