某些氨基酸对罗丹明6G过氧草酸酯化学发光的猝灭和增强作用的研究。
A study of quenching and enhancing effects of some amino acids on peroxyoxalate chemiluminescence of rhodamine 6G.
作者信息
Hosseini Morteza, Abkenar Shiva Dehghan, Chaichi Mohammad Javad, Ganjali Mohammad Reza, Norouzi Parviz
机构信息
Department of Chemistry, Islamic Azad University, Savadkooh Branch & Young Researcher Club, Savadkooh, Iran.
出版信息
Spectrochim Acta A Mol Biomol Spectrosc. 2009 Apr;72(3):484-9. doi: 10.1016/j.saa.2008.10.040. Epub 2008 Nov 5.
The quenching effect of l-cysteine, l-methionine on strong chemiluminescence of bis(2,4,6-trichlorophenyl)oxalate-H(2)O(2) system in the presence of rhodamine 6G was studied. The chemiluminescence parameters were evaluated from computer fitting of the resulting intensity-time plots. These systems resulted in Stern-Volmer plots in the quencher concentration range of 4.0 x 10(-6) to 4.0 x 10(-5)M, with K(Q) values of 1.64 x 10(4) and 8.0 x 10(4)M(-1) for l-metionine and l-cysteine, respectively. Also, this study describes the employment of l-histidine as a highly potent signal enhancer in peroxyoxalate chemiluminescence in the presence of rhodamine 6G.
研究了在罗丹明6G存在下，L-半胱氨酸、L-甲硫氨酸对双（2,4,6-三氯苯基）草酸酯-H₂O₂体系强化学发光的猝灭作用。通过对所得强度-时间曲线进行计算机拟合来评估化学发光参数。在猝灭剂浓度范围为4.0×10⁻⁶至4.0×10⁻⁵M时，这些体系得到了Stern-Volmer曲线，L-甲硫氨酸和L-半胱氨酸的K(Q)值分别为1.64×10⁴和8.0×10⁴M⁻¹。此外，本研究描述了在罗丹明6G存在下，L-组氨酸作为过氧草酸酯化学发光中一种高效信号增强剂的应用。
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