A partial least square (PLS) method combined with spectrophotometry was applied to simultaneous determination of ternary mixtures of carmine, amaranth and sunset yellow.

• 摘要将偏最小二乘法(PLS)与可见分光光度法相结合，对胭脂红、苋菜红、日落黄三种食用色素进行不经分离的同时定量分析。