Fluorescence probe based carboxymethyl cellulose/Tb(III) nanocomposites for detection of Mn2+ with simpleness, rapidness and high sensitivity

Jun Ye; Mingming Zhang; Jian Xiong

doi:10.1016/j.carbpol.2018.02.042

Fluorescence probe based carboxymethyl cellulose/Tb(III) nanocomposites for detection of Mn²⁺ with simpleness, rapidness and high sensitivity

Carbohydr Polym. 2018 Jun 15:190:156-161. doi: 10.1016/j.carbpol.2018.02.042. Epub 2018 Feb 15.

Authors

Jun Ye¹, Mingming Zhang¹, Jian Xiong²

Affiliations

¹ State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640, China.
² School of Food Science and Engineering, South China University of Technology, Guangzhou, 510640, China. Electronic address: lcjxiong@scut.edu.cn.

PMID: 29628233
DOI: 10.1016/j.carbpol.2018.02.042

Abstract

A novel, rapid, high selective and sensitive probe, carboxymethyl cellulose (CMC)/Tb(III) with green fluorescence, for detecting Mn²⁺ in aqueous solution during pH = 4-10 was proposed in this work. The probe's synthesis had benefits of mild reaction condition, organic solvent-free and facile operation. A linear relationship between the fluorescence intensity of CMC/Tb(III) probe at 544 nm with 0.046 μM detection limitation and the concentration of Mn²⁺ in the range of 0.1-100 μM was obtained. The probe was also used to detected Mn²⁺ in tap water and the recoveries were between 97.10% and 101.61%, and the relative standard deviations (RSD, n = 5) of all samples were less than 2.04%. The results by UV absorption spectrum and fluorescence quenching suggested that there might be a dynamic quenching occurred to the fluorescence of CMC/Tb(III) probe when Mn²⁺ was involved.

Keywords: Carboxymethyl cellulose; Fluorescence detection; Manganese (II); Tap water; Terbium.