目前，食用合成色素的测定国标法采用薄层层析和分光光度法〔１〕。对于透明体系中单种食用合成色素的定量测定使用一般的经典光度法就已经够了。但是在实际工作中由于食品中往往带有混浊，如汽水等饮料，这种混浊颗粒的存在将给经典光度法的测定带来较大的误差。导数分光... At present, the determination of edible synthetic pigment GB method using thin layer chromatography and spectrophotometry [1]. For the quantitative determination of a single edible synthetic pigment in a clear system, it is sufficient to use the classical classics. However, in practice, due to the food often with turbidity, such as soft drinks, the presence of such turbid particles will give the determination of the classic photometric method to bring greater errors. Derivative ...