PALLADIUM-DOPED SCREEN-PRINTED ELECTRODES FOR MONITORING FORMALDEHYDE

Screen printing of palladium-doped carbon strips results in the constr uction of disposable amperometric sensors for formaldehyde. These sens ors rely on the strong electrocatalytic action of the dispersed pallad ium particles contributing to the reduction of formaldehyde. The elect rocatalytic behaviour, sensor optimization and analytical performance are reported. The low detection limit (2 x 10(-6) mol l(-1)) is accomp anied by a wide linear range and high selectivity. Application for ass ays of various samples is demonstrated. The new single-use sensor stri ps should facilitate on-site environmental and industrial monitoring o f formaldehyde.