A Rhodamine-Based Fluorescent and Colorimetric Chemodosimeter for the
Rapid Detection of Hg2+ Ions in Aqueous Media

Yang, Young-Keun; Yook, Keun-Jeong; Tae, Jinsung

doi:10.1021/ja054855t.s001

ja054855t_si_001.pdf (750.6 kB)

A Rhodamine-Based Fluorescent and Colorimetric Chemodosimeter for the Rapid Detection of Hg²⁺ Ions in Aqueous Media

journal contribution

posted on 2005-12-07, 00:00 authored by Young-Keun Yang, Keun-Jeong Yook, Jinsung Tae

A rhodamine-based fluorescent and colorimetric chemodosimeter for the rapid detection of Hg²⁺ ions in aqueous media was developed. The system, which utilizes an irreversible Hg²⁺-promoted oxadiazole forming reaction, responds instantaneously at room temperature in a 1:1 stoichiometric manner to the amount of Hg²⁺. The selectivity of this system for Hg²⁺ over other metal ions is remarkably high, and its sensitivity is below 2 ppb in aqueous solutions.