Objective To construct and evaluate the differential potentiometric stripping methods for the detection of trace lead in whole blood. Methods This detection method was evaluated, according to related standards. Results The linear range of this method was 0-10μg/L, with a correlation coefficient of 0. 999 6. The detection limit was 0.2μg/L and coefficient of variation was lower than 4％. The detection results of this method for the detection of national standard materials were accurate, with recovery rate from 89. 8％ to 104.3 ％. Conclusion The accuracy and precision of this method could meet related standards well, with simple procedure, rapid detection and low cost, and worth for widespread application.%目的 建立并评价用于全血血铅检测的微分电位溶出法.方法 按<血铅临床检验技术规范>(下称<规范>)的要求对该方法进行评价.结果微分电位溶出法检测血铅线性范围为0～10 μg/L,相关系数为0.999 6,检出限为0.2 μg/L,变异系数小于4%,标准物质检测结果准确,加标回收率89.8%～104.3%.结论 微分电位溶出法操作简单,检测快捷,准确度和精密度均符合<规范>要求,且检测成本低廉,值得广泛推广应用.
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