A competitive coordination-based immobilization-free electrochemical biosensor for highly sensitive detection of arsenic(<scp>v</scp>) using a CeO₂–DNA nanoprobe

Abstract

We developed a competitive coordination-based immobilization-free electrochemical biosensor for highly sensitive and selective detection of arsenic(v) using a CeO₂-DNA nanoprobe, which effectively circumvented complicated modification procedures and successfully achieved arsenic(v) determination in natural water samples.