1. Gold-nanoparticles-graphene modified glassy carbon electrode for trace detection of lead ions
- Author
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Cheng Yanchao, Sun Fangfang, Lee Jaebeom, Shi Tingchun, Wang Tianze, and Li Yutong
- Subjects
Environmental sciences ,GE1-350 - Abstract
In order to fulfill rapid and trace detection of heavy metals, in the study, gold-nanoparticlesgraphene modified glass carbon electrodes were used to detect lead(Pb(II)) ions. The lead ion (Pb(II)) standard sample in acetic acid-sodium acetate buffer solution was detected by the modified electrode, and the detection conditions were optimized. Under the optimized conditions, in the buffer solution with pH=4.5, the lead ions peak current showed excellent linear relationship with the lead ion concentration in the range of 0.2~50μg/L (R2=0.995), and the minimum detection limit was 0.34μg/L. At the same time, the actual water samples were determined by nano-gold-graphene/glass carbon electrodes for lead ions, and the recovery ranges was 92.94%~101.47%, which showed that the gold-nanoparticles-graphene/glass carbon electrodes possessed significant detection performance for the actual water samples.
- Published
- 2019
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