Journal
TALANTA
Volume 146, Issue -, Pages 285-290Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.talanta.2015.08.052
Keywords
As (III); Au@Ag; As (III) -aptamer; SERS
Categories
Funding
- Natural Science Foundation of China (NSFC) [20927003, 90913013, 41273093, 21175101]
- National Major Scientific Instruments and Device Development Project [2012YQ16000701]
- Foundation of China Geological Survey [12120113015200]
Ask authors/readers for more resources
In this work, we propose for the first time a simple and novel approach based on SERS and As (III) -aptamer for detection of As (III) with excellent selectivity and sensitivity. To maintain the wonderful SERS substrate, Au@Ag shell-core nanoparticle has been successfully synthesized by seeds growth method. As-prepared Au@Ag not only has well-dispersed but also obtains high SERS efficiency. The novel As (III) biosensor has an excellent linear correlation with the concentration of As (III) ranging from 0.5 to 10 ppb. The detection limit of this assay for As (III) is 0.1 ppb (3 times standard deviation rules) which is lower than the maximum limitation guided by the United States Environmental Protection Agency (EPA) and the World Health Organization (WHO). Importantly, the results were demonstrated that no other ions interfered with the detection of As (III) in water. Further, this As (III) biosensor was demonstrated in monitoring As (III) in lake water samples with satisfactory results. (C) 2015 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available