Journal
ANALYST
Volume 139, Issue 15, Pages 3804-3810Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4an00384e
Keywords
-
Categories
Funding
- National Science Foundation [CBET-1159540]
- ACS Herman Frasch Foundation [04509701]
Ask authors/readers for more resources
Nanoparticles of TiO2 or SnO2 on screen-printed carbon (SP) electrodes have been developed for evaluating their potential application in the electrochemical sensing of volatiles in fruits and plants. These metal oxide nanoparticle-modified electrodes possess high sensitivity and low detection limit for the detection of p-ethylguaiacol, a fingerprint compound present in the volatile signature of fruits and plants infected with a pathogenic fungus Phytophthora cactorum. The electroanalytical data obtained using cyclic voltammetry and differential pulse voltammetry showed that both SnO2 and TiO2 exhibited high sensitivity (174-188 mu A cm(-2) mM(-1)) and low detection limits (35-62 nM) for p-ethylguaiacol detection. The amperometric detection was highly repeatable with RSD values ranging from 2.48 to 4.85%. The interference studies show that other common plant volatiles do not interfere in the amperometric detection signal of p-ethylguaiacol. The results demonstrate that metal oxides are a reasonable alternative to expensive electrode materials such as gold or platinum for amperometric sensor applications.
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