A multi-channel sensor based on 8-hydroxyquinoline ferrocenoate for probing Hg(II) ion

作者：Shi, Lei; Song, Wei; Li, Yang; Li, Da-Wei; Swanick, Kalen N.; Ding, Zhifeng; Long, Yi-Tao^*

来源：Talanta, 2011, 84(3): 900-904.

DOI：10.1016/j.talanta.2011.02.024

• Multi-channel sensor
• Ferrocene
• 8-Hydroxyqinoline
• Screen-printed carbon electrode

A new sensing molecule 8-hydroxyquinoline ferrocenoate (Fc-Q) which combines ferrocene and 8-hydroxyquinoline moieties was synthesized and applied as a multi-channel sensor for the detection of Hg2+ ion. Fc-Q can coordinate with Hg2+ to give colorimetric, fluorescent and electrochemical responses. Upon complexation with Hg2+ ion, the characteristic absorption peak is red-shifted (Delta lambda = 45 nm), the fluorescent intensity is quenched at 303 nm, and the oxidation peak is cathodic shifted (Delta E-1/2 = -149 mV). Quantitatively analyzed Hg2+ ions at the range of ppb level could be achieved by electrochemical response. For the practical application of sensing Hg2+ in real world water. Fc-Q modified screen-printed carbon electrodes were obtained for facile, sensitive, and on-site analysis of Hg2+.

• 出版日期2011-5-15
• 单位华东理工大学