Abstract: A field portable arsenic sensor is prepared using molecular imprinted polymer (MIP) technology. This sensor differentiates and quantitates arsenate and arsenite ions. A conductive MIP is coated onto an electrode; arsenic species selected by the MIP are detected electrochemically. The molecular recognition site is prepared by a Williamson ether synthesis between the chloride derivative of 4H-cyclopental[2,1-b: 3 4-b']dithiophen-4 -one (CDT) and the oxygen present in arsenate and arsenite compounds. A field portable system has been developed using rugged, solid state field effect transistors coated with the MIP. Data showing detection and speciation of arsenate and arsenite in a number of matrices is presented.
Template and target information: aresenate ion, arsenite ion