The use of sample preparation methods for selective extraction of targets is likely to become commonplace as user-friendly and cost-effective techniques are becoming available. Sample preparation
methods with pre-concentration and clean-up operations enable the analysis of several classes of food additives simultaneously with greater specificity and better detection limits [6–8]. The number of studies on this issue over the past few years gives testimony to the importance of this problem and highlights the need for developing fast, accurate and selective techniques for synthetic dye analysis [9].