Objective To develop a method for detecting lead in blood by a novel DNAzyme sensor (Pb dependent DNAzyme).
Methods
1. Establishment of a novel method for detecting lead in blood based on Pb dependent DNAzyme.
Blood samples were pretreated with Triton X-100, and the protein in blood samples were digested or removed by Proteinase K, nitric acid and TCA in turn, which results a release of Pb icon. Then after adjusting pH to neutral, pretreated blood sample was mixed with substrate strand and en...