CAJ | 학술논문

Hg2＋可以猝灭核黄素的荧光，碘离子（ I-）可以与Hg2＋形成HgI2，基于此，发展了一种新型的荧光增强法检测水中I-的方法。 Hg2＋加入后，核黄素在525 nm处的荧光被猝灭；继续在体系中加入不同浓度的I-，体系中Hg2＋被不断消耗，导致核黄素在525 nm处的荧光逐渐增强。该方法检测I-的线性范围在1-100μmol· L-1，检测限是0.4μmol· L-1；同时，该方法具有较快的响应时间（2 min）；对其他卤素离子具有较好的选择性；用于水中I-检测时得到了较好的回收率。
Hg2＋가이졸멸핵황소적형광，전리자（ I-）가이여Hg2＋형성HgI2，기우차，발전료일충신형적형광증강법검측수중I-적방법。 Hg2＋가입후，핵황소재525 nm처적형광피졸멸；계속재체계중가입불동농도적I-，체계중Hg2＋피불단소모，도치핵황소재525 nm처적형광축점증강。해방법검측I-적선성범위재1-100μmol· L-1，검측한시0.4μmol· L-1；동시，해방법구유교쾌적향응시간（2 min）；대기타서소리자구유교호적선택성；용우수중I-검측시득도료교호적회수솔。
Hg2+could quench the fluorescence of riboflavin ,and iodine ion(I-)could react with I-to form HgI2 or HgI2.On the basis of these two phenomena ,a novel“turn-on”fluorescent method for the decetection of I -was developed in the present work.In this strategy,the fluorescence of riboflavin at the wavelength of 525 nm was quenched owing to the addition of Hg 2+.While in the pres-ence of different concentrations of I -,I-could react with Hg 2+and make the fluorescence of riboflavin and Hg 2+mixture“turn-on”in-creasingly.This“turn-on”fluorescent method had linear relationship with I -from 1 to 100μmol· L-1 with the limit of dectect ( LOD) of 0.4μmol· L-1.Furthermore,this fluorescent method had fast reponse time to I -(2 min),good slectivity of other haloid ions and good recoveries in the anlysis of I-in drinking water .