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Nowadays,people pay attention to the detection of heavy metals in tea increasingly,so it is urgent to develop a kind of rapid detection technology which is convenient,economic,precise and sensitive.Traditional solid electrode was replaced by screen-printed carbon electrode (SPCE).Based on square wave anodic stripping voltammetry (SWASV) with a SPCE in situ plated in mercury(Ⅱ),a nouveau technique for rapid detection Pb2+ in tea was developed.