EPA Science Inventory

ELECTROCHEMICALLY DEPOSITED POLYMER-COATED GOLD ELECTRODES SELECTIVE FOR 2,4-DICHLOROPHENOXYACETIC ACID

Citation:

WEETALL, H., D. W. HATCHETT, AND K. R. ROGERS. ELECTROCHEMICALLY DEPOSITED POLYMER-COATED GOLD ELECTRODES SELECTIVE FOR 2,4-DICHLOROPHENOXYACETIC ACID. ELECTROANALYSIS. Wiley-VCH, Weinheim, Germany, 17(19):1789-1794, (2005).

Description:

Electropolymerized membranes on gold electrodes doped with 2,4-dichlorophenoxyacetic acid (2,4-D) were prepared from a solution containing resorcinol, o-phenylenediamine and 2,4-D. Fourier Transform Infrared (FTIR) spectroscopy was used to evaluate the incorporation and interaction of 2,4-D with the polymer matrix prior to and after the sensing experiments. The FTIR data indicate that 2,4-D does not leach appreciably from the polymer matrix under experimental conditions employed for the sensing studies. The electrochemical current response for 2,4-D is compared for the doped polymer-coated and control polymer-coated electrode. The response of the doped polymer-electrode was dependent on increasing concentrations of 2,4-D and 2,4-dichlorophenol while unresponsive to benzoic acid.

Purpose/Objective:

The overall objective of this task is to develop scientifically sound sampling and bioanalytical approaches for screening and monitoring of hazardous wastes. These techniques are expected to provide the Agency with improved screening and field portable methods to characterize, reduce, and control risk to human health and the environment. Specific objectives will include development and characterization of the following concepts:

SPMDs for passive accumulation of TICs

Bioassays for toxic and genotoxic compounds

MIPs for volatile and semivolatile toxic organics

Rapid screening assays using the previously listed components.

URLs/Downloads:

Record Details:

Record Type: DOCUMENT (JOURNAL/PEER REVIEWED JOURNAL)
Start Date: 10/01/2005
Completion Date: 10/01/2005
Record Last Revised: 03/06/2012
Record Created: 05/26/2005
Record Released: 05/26/2005
OMB Category: Other
Record ID: 133487

Organization:

U.S. ENVIRONMENTAL PROTECTION AGENCY

OFFICE OF RESEARCH AND DEVELOPMENT

NATIONAL EXPOSURE RESEARCH LAB

HUMAN EXPOSURE AND ATMOSPHERIC SCIENCES DIVISION

EXPOSURE & DOSE RESEARCH BRANCH