A novel version of a silver solid amalgam electode for the combination of hollow fiber supported membrane extraction and voltammetric determination of acidic substances
2019
Abstract
An electrode capable of voltammetric measurements inside a polypropylene hollow fiber with an octanol supported liquid membrane has been developed. The intended application is determination of the herbicide Aclonifen in environmental matrices after hollow fiber supported liquid membrane extraction.
As a proof of concept calibration dependencies were measured for 2,4-dinitrosalicylic acid in the concentration range 1x10-3 mol L-1 to 2x10-4 mol L-1 and they are linear for both a bare electrode and an electrode inside the hollow fiber. Results of optimization studies of the extraction of 2,4-dinitrosalicylic acid and Aclonifen combined with voltammetric determination will be presented.