Development of a novel rhodamine-type fluorescent probe to determine peroxynitrite
- 化学化工－已发表论文 
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 7.5 x 10(-8)-3.0 x 10(-6) mol l(-1) with a detection limit of 2.4 x 10(-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. (C) 2002 Elsevier Science B.V. All rights reserved.