反应型香豆素探针的合成及其对废水中汞离子的检测  

Reactive coumarin-derived probe for trace detection of Hg in real water samples

作　　者：张璐[1] 信熙卿[1] 魏白 ZHANG Lu;XIN Xi-qing;WEI Bai(Pingdingshan Polytechnic College,Pingdingshan 467001,China;Nylon Technology Co.,Ltd.,China Pingmei Shenma Group,Pingdingshan 467001,China)

机构地区：[1]平顶山工业职业技术学院,河南平顶山467001 [2]中国平煤神马集团尼龙科技有限公司,河南平顶山467001

出　　处：《现代化工》2021年第1期239-242,共4页Modern Chemical Industry

摘　　要：以间苯二酚为原料合成了一种新型反应型的香豆素二硫缩醛荧光探针(L1),并通过结构确征。在pH 6.15~9.96时,探针L1可以高选择性对Hg^(2+)进行荧光检测,检测限低至1.6 nmol/L;同时提出了L1对Hg^(2+)的传感机制,并通过核磁研究证实。在紫外线灯下,肉眼可检测到荧光的颜色变化。实际应用研究表明,荧光探针L1能应用于真实水样中Hg^(2+)的痕量检测。A novel reactive 8-(bis(butylthio)methyl)-7-hydroxy-4-methylcoumarin(L1)fluorescent probe is designed and synthesized,and its structure is charaterized.L1 probe shows highly selective fluorescent sensing to Hg^(2+)in the p H range from 6.15 to 9.96 in ethanol/water(v/v=1/1)solution,showing a low detection limit of 1.6 nmol·L-1.The sensing mechanism of L1 towards Hg^(2+)is proposed and verified by1 HNMR studies.Under a UV lamp,the fluorescence color changes for L1 can be easily observed by the naked eye.It is verfied by actual application that L1 probe can be applied in the trace detection of Hg^(2+)in real water samples.

关 键 词：香豆素 荧光探针 二硫缩醛 汞离子 

分 类 号：O62[理学—有机化学]