A Single Fluorescent Sensor for Hg2+ and Discriminately Detection of Cr3+ and Cr(VI)

被引：33

作者：

Afshani, Jafar ^{[1
]}

Badiei, Alireza ^{[1
,2
]}

Karimi, Mehdi ^{[1
]}

Lashgari, Negar ^{[1
]}

Ziarani, Ghodsi Mohammadi ^{[3
]}

机构：

[1] Univ Tehran, Coll Sci, Sch Chem, Tehran, Iran

[2] Univ Tehran, Nanosci & Nanotechnol Res Ctr, Nanobiomed Ctr Excellence, Tehran, Iran

[3] Alzahra Univ, Fac Sci, Dept Chem, Tehran, Iran

来源：

JOURNAL OF FLUORESCENCE | 2016年 / 26卷 / 01期

关键词：

Fluorescent sensor; Iminocrown ether; Mercury; Chromium; PLASMA-MASS-SPECTROMETRY; CHIRAL CROWN-ETHERS; HEAVY-METAL IONS; STRIPPING VOLTAMMETRY; LIQUID-CHROMATOGRAPHY; SELECTIVE DETECTION; AQUEOUS-MEDIA; MERCURIC ION; COMPLEXES; WATER;

D O I：

10.1007/s10895-015-1708-9

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

An iminocrown ether was synthesized and its fluorescence properties were studied in the presence of a variety of cations and anions in 99 % aqueous medium. The results revealed the interesting ability of the iminocrown ether in discriminately detection of Cr(III) and Cr(VI) ions in addition to detection of Hg2+ ion. Among various environmentally relevant metal ions, Cr3+ and Hg2+ enhanced and quenched the fluorescence emission, respectively and among anions only dichromate ion, Cr(VI), quenched the emission while the rest of ions insignificantly influenced the fluorescence emission. Selectivity of the iminocrown ether was also investigated and proved in the presence of excess of common competing ions. Furthermore, the fluorescence intensity of the iminocrown ether was studied as a function of concentrations of the three ions by performing a titration experiment for each one of them. The detection limits of 5.36 x 10(-8), 2.06 x 10(-6), and 7.49 x 10(-8) mol L-1 were also calculated for Hg2+, Cr3+, and Cr(VI), respectively.

引用

页码：263 / 270

页数：8

共 54 条

[1] Fluorometric chemosensors.: Interaction of toxic heavy metal ions PbII, CdII, and HgII with novel mixed-donor phenanthroline-containing macrocycles:: Spectrofluorometric, conductometric, and crystallographic studies [J].