Journal
MICROCHIMICA ACTA
Volume 172, Issue 3-4, Pages 387-393Publisher
SPRINGER WIEN
DOI: 10.1007/s00604-010-0506-y
Keywords
Cadmium; Mesoporous molecular sieve; Ionic liquids; Chemically modified electrode; Stripping voltammetry
Categories
Funding
- National Natural Science Foundation of China [20975088]
- State Special Scientific Project on Water Treatment of China [2009ZX07212-001-06]
- Hunan Provincial Natural Science Foundation of China [09JJ6018]
- Chinese Ministry of Education [210152]
- Foundation of the Hunan Provincial Education Department [09A092, 10C1254]
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, China [09HJYH05]
Ask authors/readers for more resources
A composite film made from a thiol-functionalized mesoporous molecular sieve and an ionic liquid is introduced for use in a voltammetric sensor for Cd(II). The electrode exhibits excellent sensitivity towards Cd(II) in showing a markedly increased stripping peak current. Following the optimization of the experimental parameters, a linear response is obtained in the concentration range from 29 nM to 0.87 mM of Cd(II). The detection limit is as low as 1.0 nM (at S/N=3) after an accumulation at -1.1 V for 4 min. The method was successfully applied to determine Cd(II) in water samples. Features such as large electroactive area, fast electron transfer and low background current make this electrode a promising platform for fabricating reliable electrochemical sensors for various species, such as heavy metals and environmental pollutants.
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