Electrochemiluminescence Sensor Based on CeO₂ Nanocrystalline for Hg²⁺ Detection in Environmental Samples.

ABSTRACT: The excessive concentration of heavy-metal mercury ions (Hg²⁺) in the environment seriously affects the ecological environment and even threatens human health. Therefore, it is necessary to develop rapid and low-cost determination methods to achieve trace detection of Hg²⁺. In this paper, an Electrochemiluminescence (ECL) sensing platform using a functionalized rare-earth material (cerium oxide, CeO₂) as the luminescent unit and an aptamer as a capture unit was designed and constructed. Using the specific asymmetric matching between Hg²⁺ and thymine (T) base pairs in the deoxyribonucleic acid (DNA) single strand, the "T-Hg-T" structure was formed to change the ECL signal, leading to a direct and sensitive response to Hg²⁺. The results

SUBMITTER: Tian C 

PROVIDER: S-EPMC10779929 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature