Issue 5, 2012
From the journal:

Analyst

Highly sensitive and selective detection of beryllium ions using a microcantilever modified with benzo-9-crown-3 doped hydrogel

Rong-Peng Peng,a   Bin Chen,*a   Hai-Feng Ji,*b   Li-Zhu Wu*a  and  Chen-Ho Tunga  

* Corresponding authors

a Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences and Graduate University of Chinese Academy of Sciences, Beijing, China
E-mail: chenbin@mail.ipc.ac.cn, lzwu@mail.ipc.ac.cn
Fax: +86-10-82543580

b Department of Chemistry, Drexel University, Philadelphia, Pennsylvania, USA
E-mail: hj56@drexel.edu

Abstract

A microcantilever sensor modified by chitosan/gelatin hydrogels that are doped with benzo-9-crown-3 has been developed for the sensitive and selective detection of beryllium ions in an aqueous solution. The microcantilever undergoes bending deflection upon exposure to Be2+ due to selective absorption of Be2+ in the hydrogel. The detection limit is 10−11 M. Other metal ions, such as Li+, Na+, K+, Mg2+, and Ca2+, have a marginal effect on the deflection of the microcantilever. The mechanism of the bending is discussed and the results showed that the microcantilever may be used for in situdetection of beryllium.

Graphical abstract: Highly sensitive and selective detection of beryllium ions using a microcantilever modified with benzo-9-crown-3 doped hydrogel

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Article information

DOI
https://doi.org/10.1039/C2AN15950C
Article type
Paper
Submitted
11 Oct 2011
Accepted
15 Dec 2011
First published
19 Jan 2012

Analyst, 2012,137, 1220-1224

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Highly sensitive and selective detection of beryllium ions using a microcantilever modified with benzo-9-crown-3 doped hydrogel

R. Peng, B. Chen, H. Ji, L. Wu and C. Tung, Analyst, 2012, 137, 1220 DOI: 10.1039/C2AN15950C

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