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中文摘要：
采用自制丝网印刷微电极,结合阳极溶出法对微波消解后的莲子芯中的微量铅进行了测定。考察了微波消解条件、缓冲溶液pH值、富集电位、富集时间、脉冲强度、脉冲周期等对检测的影响。试验结果表明：在pH 3.6的乙酸-乙酸钠缓冲溶液中,—1.1 V富集10 s后,电流与铅的质量浓度在1～1000μg·L^-1范围内呈线性关系,相关系数为0.996。测定结果的相对标准偏差（n=5）小于5%,加标回收率为101.9%。
英文摘要：
Lead in lotus plumule was determined by the differential pulse anodic stripping voltammetry using screen-printed microelectrode.Lotus plumule sample was digested in a micro-wave oven under 500 kpa for 1 h. Various factors affecting the determination i.e.,the condition of sample digestion,pH of the sample solution, potential and time of enrichment,pulse intensity and periodicity etc.were studied and optimized.In an acetate buffer of pH 3.6,and by enrichment at-1.1 V for 10 s,linearity was kept between the peak current and concentration of Pb^2＋ in the range from 1μg to 1 mg per liter（r=0.996）.In its application to the analysis of substantial sample of lotus plumule,values of RSD＇s（n=5）and recoveries found were less than 5% and in the range of 101.9% respectively.
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