血铅的含量在铅中毒诊断治疗中是有价值的指标之一。本文介绍用国产微分电位溶出仪,血样不经消化,取耳垂一滴血(20～50μl)即可直接测定。在玻碳圆盘电极上,预电解电位-1.6V,预电解时间40秒,静止20秒,记录电位溶出峰。以标准加入法定量。检出限0.0009μg/ml,变异系数3.4％,回收率97～105％。所用仪器具有灵敏度高、取样量少、操作方便、易于推广。 Blood lead levels in the diagnosis and treatment of lead poisoning is one of the indicators of value. This article describes the use of domestic differential potentiometer dissolution apparatus, blood samples without digestion, take a drop of blood (20 ~ 50μl) can be directly measured. In the glassy carbon disk electrode, pre-electrolysis potential -1.6V, pre-electrolysis time 40 seconds, still 20 seconds, record the potential dissolution peak. Standard addition to the law. The detection limit of 0.0009μg / ml, the coefficient of variation of 3.4%, the recovery rate of 97 to 105%. The instrument used has high sensitivity, sampling less, easy to operate, easy to promote.