WANG RUIXIA1, WANG LIRONG2, GE JUNYAN1, et al. Voltammetric Studies of the Interaction of Benzidine with DNA and Its Application. [J]. 2007, (4): 421-425.
WANG RUIXIA1, WANG LIRONG2, GE JUNYAN1, et al. Voltammetric Studies of the Interaction of Benzidine with DNA and Its Application. [J]. 2007, (4): 421-425.DOI:
the electrochemical behavior of the BZ with DNA has been studied in Tris buffer solution(pH 7.0).In the absence of DNA
there was a pair of oxidation-reduction peaks due to the presence of BZ
while in the presence of DNA this peak current decreases in a quantitative fashion.This decrease of peak current is due to the formation of the DNA-BZ complex.Under the optimum conditions
the decrease of peak current is linear with DNA concentration in the range from 7.0×10-8 to 6.0×10-6 g/mL
and the detection limit is 3.0×10-8 g/mL.This method exhibits a good recovery and sensitivity
which could be applied to the determination of DNA in sample.The mechanism of the interaction of DNA with BZ is also discussed.