TITLE:
Sensitive Colorimetric and Fluorescent Detection of Mercury Using Fluorescein Derivations
AUTHORS:
Zhihui Xie, Fangjun Huo, Jing Su, Yutao Yang, Caixia Yin, Xuxiu Yan, Shuo Jin
KEYWORDS:
Fluorescein Hydrazide; Hg2+; Fluorescent; UV-Visible; Sensor
JOURNAL NAME:
Open Journal of Applied Biosensor,
Vol.1 No.3,
November
21,
2012
ABSTRACT: A colorimetric and fluorometric dual-model probe for mercury (II) ion was developed employing fluorescein hydrazide (FH) in ethanol-HEPES solution (1:1, v/v, pH 8.0). The probe exhibited high selectivity and sensitivity for Hg2+ detection using UV/Vis and fluorescence spectroscopy. Addition of Hg2+ caused a visual color change from colorless to coloured and a fluorescence change from colorless to bright green. Other metal ions did not interfere with the detection of Hg2+.