纸基微流控芯片的构建及其在柠檬黄检测中的应用

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Construction of Paper-Based Microfluidic Chip and Its Application in Tartrazine Detection

WU Hongjing， LI Ziyu， XU Wenyi， NING Siying， LIU Ting （College ofScience and Technology，Nanchang University， Jiujiang ， China）

Abstract： In this paper，a fast and simple paper-based microfluidic detection method was developed based on the specific adsorption properties of polyamide films. Based on the color reaction and pH value response mechanism of tartrazine and Cu2+ ，the detection can be completed within 10min .The results show that the detection limit of the chip is 0.005mg⋅mL-1 ，which has good stability and reliability，and has certain crossreaction to sunset yellow. Compared with the traditional method for detecting tartrazine，the paper based microfluidic method has the advantages of simple operation and no need for complex instruments.Eight samples randomly selected onthe market were tested，and through software analysis and visualization methods，it was posible to intuitively determine whether tartrazine was added to the sample.The method is suitable for rapid detection and screening in food field.

Keywords： tartrazine; rapid detection; paper-based microfluidic chip

柠檬黄（E102）作为一种人工合成偶氮类食用色素，凭借其优异的化学稳定性、经济性及显色性能，被广泛应用于饮料、烘焙制品等食品工业领域。（剩余7175字）