A simple procedure based on ultrasound-assisted (UA) dispersive micro solid phase extraction (D-μ-SPE) was applied for adsorption of trace amount Allura Red (AR) in fruit juice and water samples. After loading process by UA-D-μ-SPE, the concentrated AR was eluted and monitored using high-performance liquid chromatography-ultraviolet -visible detector (HPLC-UV). The best operational conditions were obtained as follows: pH = 3.0, 8 mg of the sorbent, sonication time of 4.5 min and 0.16 mL THF as elution solvent. Under the optimum operational conditions, the present method was acceptable for AR quantification in the range of 1.0-5000 ng mL^-1. The repeatability based on RSD with the amount of 1.67–3.18%, low LOD (0.198 ng mL^-1) and LOQ (0.659 ng mL^-1) were obtained. The UA-D-μ-SPE-HPLC-UV method was successfully applied for trace quantification of AR from water and commercial fruit juice samples supplied from local supermarkets, and acceptable relative recoveries over the range of 97.7-105.4% with RSDs ≤ 5.50% were obtained.

应用基于超声辅助（UA）分散微固相萃取（D-μ-SPE）的简单程序吸附果汁和水样品中的痕量Allura Red（AR）。通过UA-D-μ-SPE进行上样后，将浓缩的AR洗脱并使用高效液相色谱-紫外-可见检测器（HPLC-UV）进行监控。获得的最佳操作条件如下：pH = 3.0，吸附剂8 mg，超声处理时间4.5 min，洗脱溶剂为0.16 mL THF。在最佳操作条件下，本方法可接受的AR定量在1.0-5000 ng mL ^-1的范围内。基于RSD的重复性为1.67–3.18％，低LOD（0.198 ng mL ^-1）和LOQ（0.659 ng mL ^-1））。UA-D-μ-SPE-HPLC-UV方法成功地用于从当地超市提供的水和商业果汁样品中痕量AR的定量分析，相对标准偏差在9.77-105.4％之间，RSD≤5.50％获得了。