Cristea, IonutIonutCristeaRadulescu, Maria CristinaMaria CristinaRadulescuCiomartan, RazvanRazvanCiomartan2017-03-312017-03-3120112537-5733http://hdl.handle.net/123456789/636Revista de Chimie (Bucuresti) Volume 62 Issue 10A new flow injection set up was developed for mercury determination by stripping chronopotentiometry. The FIA system was based on using solenoid valves controlled by a computer. A flow cell was manufactured with the gold working electrode made from a recordable compact disk (CD-R). The following operational parameters were studied and optimized: sample flow rate, time of mercury deposition by electrolysis on the electrode surface and current imposed for mercury dissolution off the working electrode. Mercury could be measured within 5 - 100 ng/mL domain at a deposition time of 180 s. Detection limit was 0.1 ng/mL at 600 s deposition time. RSD for a concentration of 40 ng/mL mercury was 1.04% (n=6) under optimal working conditions. . A concentration of 0.157±0.031μg mercury/g sample was found in a cod sample with this method. Recovery degree of a known amount of mercury introduced in the analyzed sample was 96.2%.en-USMercury analysisGold electrodesStripping chronopotentiometryFlow injection analysisFish analysisArticle