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Issue 13, 2012
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Electroanalytical studies on green leaf volatiles for potential sensor development

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Abstract

An electrochemical study for detecting green leaf plant volatiles from healthy and infected plants has been devised and tested. The electrocatalytic response of plant volatiles at a gold electrode was measured using cyclic voltammetry, amperometric current–time (it) analysis, differential pulse voltammetry (DPV) and hydrodynamic experiments. The sensitivity of the gold electrode in it analysis was 0.13 mA mM−1 cm−2 for cis-3-hexenol, 0.11 mA mM−1 cm−2 for cis-hexenyl acetate and 0.02 mA mM−1 cm−2 for hexyl acetate. The limits of detection of cis-3-hexenol, cis-hexenyl acetate and hexyl acetate by it analysis were 0.5, 0.3 and 0.6 μM, respectively, at a signal to noise ratio of 3. The hydrodynamic studies yielded the electro-kinetic parameters such as diffusivities of plant volatiles in solution and the rate constants for their electrochemical reactions. The DPV and interference studies reveal that the gold electrode possessed high sensitivity for plant volatiles determination in synthetic samples, which imitates both healthy and infected plants.

Graphical abstract: Electroanalytical studies on green leaf volatiles for potential sensor development

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Supplementary files

Article information


Submitted
15 Mar 2012
Accepted
19 Apr 2012
First published
20 Apr 2012

Analyst, 2012,137, 3138-3145
Article type
Paper

Electroanalytical studies on green leaf volatiles for potential sensor development

Y. Umasankar, G. C. Rains and R. P. Ramasamy, Analyst, 2012, 137, 3138
DOI: 10.1039/C2AN35350D

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