The speciation of Pb2+ in Daqing residual oil and Anshan visosine were determined. The relativestandard deviation is 2.27% and 3.47%,respectively. The average recovery rate is 99.40% and 96.26% respectively.

• 测定了大庆渣油和鞍山粘油中的铅含量；相对标准偏差分别为2.；27%25和3