Fluorometric measurement of aflatoxin adsorbed on florisil in minicolumns.

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Abstract

Filter fluorometers have been adapted to measure the fluorescence intensity of aflatoxin absorbed on a Florisil layer in minicolumns. The relationship between concentration and intensity is near linear in the aflatoxin range from 10 to 100 ng. Although individual aflatoxin fractions cannot be resolved, since the measure is one of total intensity, fluorometric measurements advance the minicolumn screening procedure to a semiquantitative level. The detection of 1 ng aflatoxin B1 is well within the limits of a filter fluorometer with a photomultiplier detector. A precision, expressed as per cent coefficient of variation, ranging from 1.2 to 4.2%, was obtained for standard B1 columns.

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Velasco, J. (1975). Fluorometric measurement of aflatoxin adsorbed on florisil in minicolumns. Journal - Association of Official Analytical Chemists, 58(4), 757–763. https://doi.org/10.1093/jaoac/58.4.757

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