Abstract
Thermospray mass spectrometry (TSMS) was used to identify the derivatives formed when iodine is reacted with aflatoxins B1 and G1 at approximately 70 degrees C to enhance fluorescence. It was found that stable derivatives were formed by addition of an iodine atom and a methoxy group across the double bond located on the furan ring of the aflatoxin B1 and G1 molecules. TSMS and TSMS/MS daughter spectra of the reaction products of aflatoxin B1 and G1 with iodine provide evidence of the addition of each moiety to produce the iodo-methoxy derivative. The addition of an iodine atom to one carbon and a methoxy group to the other carbon of the furan ring provided molecular weights of 470 and 486 for the products of aflatoxin B1 and G1, respectively.
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