Development of a novel rhodamine-type fluorescent probe to determine peroxynitrite.
A novel method for the determination of peroxynitrite using rhodamine B hydrazide as a fluorogenic probe is described. The method is based on the oxidation of rhodamine B hydrazide, a colorless, non-fluorescent substance, by peroxynitrite to give rhodamine B-like fluorescence emission. The fluorescence increase is linearly related to the concentration of peroxynitrite in the range of 7.5x10(-8)-3.0x10(-6) mol l(-1) with a detection limit of 2.4x10(-8) mol l(-1) (3sigma). The optimal conditions for the detection of peroxynitrite were evaluated and the possible detection mechanism was also discussed in this paper.
Yang
Xiao-Feng
XF
Department of Chemistry and the Key Laboratory of Analytical Sciences of MOE, Xiamen University, Xiamen 361005, Fujian, PR China.
Guo
Xiang-Qun
XQ
Zhao
Yi-Bing
YB