| Literature DB >> 26250058 |
Yujuan Cao1,2, Jiongling Wei3, Wei Wu3, Song Wang3, Xiaogang Hu3,4, Ying Yu3,4.
Abstract
In the present work, the CdTe quantum dots were covalently conjugated with permethylated-β-cyclodextrin (OMe-β-CD) using 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride as cross-linking reagent. The obtained functional quantum dots (OMe-β-CD/QDs) showed highly luminescent, water solubility and photostability as well as good inclusion ability to malachite green. A sensitive fluorescence method was developed for the analysis of malachite green in different samples. The good linearity was 2.0 × 10(-7)-1.0 × 10(-5) mol/L and the limit of detect was 1.7 × 10(-8) mol/L. The recoveries for three environmental water samples were 92.0-108.2 % with relative standard deviation (RSD) of 0.24-1.87 %, while the recovery for the fish sample was 94.3 % with RSD of 1.04 %. The results showed that the present method was sensitive and convenient to determine malachite green in complex samples. Graphical Abstract The analytical mechanism of OMe-β-CD/QDs and its linear response to MG.Entities:
Keywords: Fluorescence analysis; Malachite green; Permethylated-β-cyclodextrin; Quantum dots; Water and fish samples
Year: 2015 PMID： 26250058 DOI： 10.1007/s10895-015-1630-1
Source DB: PubMed Journal: J Fluoresc ISSN： 1053-0509 Impact factor: 2.217