摘要： Even though many pharmaceuticals show native chromophoric properties, there are also many important compounds, such as anticholinergic drugs, toxins, steroids and anticancer agents, which are not chromophoric and can not be determined by usual spectra analysis. T-2 toxin is one kind of the compounds. The detection of these compounds by HPLC imposes severe limitation on sensitivity and ofen togather with unacceptable constraints on mobile phase selection. Precolumn or postcolumn derivatization technology by using chromophoric group is often an inexpensive but effective way to overcome this problem, which make these compounds chromophoric and then enhance detcetability of them. For trace analysis, there is a balance to be attained between rigour of sample cleanup and selectivity of detection. Derivatization of target compounds of pharmaceuticals interest offers significant advantages, such as improving selectivity and thus reducing the complexity of the sample cleanup required.

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