本文对国内法定的合成食用色素(苋莱红,胭脂红,柠檬黄,日落黄,亮蓝)可能构成的十种双拼色体系,进行了二阶导数光度分析的系统研究。详细报告了求导参数和分别测定的条件,并完成若干实例分析。 In this paper, we systematically studied the second-order derivative photometric analysis of ten dual-color systems which may be composed of the domestic synthetic food colorings (amaranth, carmine, lemon yellow, sunset yellow and brilliant blue). The derivation parameters and the conditions for the determination were reported in detail and several case studies were completed.