The milk, milk beverages and yogurt matrix effects on ana-lytes were not significant, only DINP, DNP and DMeP showed ionsuppression of +50% [32]. Apparently,QuEChERS was as effective for phthalates extraction and samplecleanup for milk, milk beverages and yogurt. It is interesting tonotice that the matrix effects from different types of milk, milkbeverages and yogurt showed a similar ion enhancement or sup-pression profile (Fig. 4). Therefore, any milk, milk beverages andyogurt may be chosen as a standard matrix to construct matrix-matched calibration curves for quantification in routine practice.