Determination of Alachlor in food products by a fluorescence polarization immunoassayстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:A procedure for the determination of Alachlor in liquid media using a fluorescence polarization immunoassay (FPIA) was developed. The effects of the structure and purification degree of a tracer (analyte with a fluorescent label) on the analytical signals, sensitivity, and selectivity in the determination of Alachlor were studied. The tracer-antibody binding constants (K-T) and antigen-antibody binding constants (affinity constants K-Af) were calculated, and optimum immunoreagent pairs for the determination of Alachlor were chosen. The calibration graph was linear over the Alachlor concentration range 0.01-1.0 mu g/mL; the detection limit was 8 ng/mL. The procedure was tested in the analysis of model solutions and soy-containing food products (sausages).