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Issue 11, 2012
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Highly selective and sensitive detection of Cu2+ with lysine enhancing bovine serum albumin modified-carbon dots fluorescent probe

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Abstract

Based on the ability of lysine (Lys) to enhance the fluorescence intensity of bovine serum albumin modified-carbon dots (CDs-BSA) to decrease surface defects and quench fluorescence of the CDs-BSA-Lys system in the presence of Cu2+ under conditions of phosphate buffer (PBS, pH = 5.0) at 45 °C for 10 min, a sensitive Lys enhancing CDs-BSA fluorescent probe was designed. The environment-friendly, simple, rapid, selective and sensitive fluorescent probe has been utilized to detect Cu2+ in hair and tap water samples and it achieved consistent results with those obtained by inductively coupled plasma mass spectroscopy (ICP-MS). The mechanism of the proposed assay for the detection of Cu2+ is discussed.

Graphical abstract: Highly selective and sensitive detection of Cu2+ with lysine enhancing bovine serum albumin modified-carbon dots fluorescent probe

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Article information


Submitted
29 Jan 2012
Accepted
04 Apr 2012
First published
05 Apr 2012

Analyst, 2012,137, 2637-2642
Article type
Paper

Highly selective and sensitive detection of Cu2+ with lysine enhancing bovine serum albumin modified-carbon dots fluorescent probe

J. Liu, L. Lin, X. Wang, S. Lin, W. Cai, L. Zhang and Z. Zheng, Analyst, 2012, 137, 2637
DOI: 10.1039/C2AN35130G

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