Title :
Sample preparation and mercury determination by stripping voltammetry in environmental objects
Author :
Khustenko, Larissa A. ; Larina, Liudmila N. ; Nazarov, Boris F.
Author_Institution :
Chem. Technol. Dept., Tomsk Polytech. Inst., Russia
fDate :
26 June-3 July 2004
Abstract :
A rapid and sensitive technique for mercury determination by anodic stripping voltammetry is proposed. The carbon electrode modified with gold was used as an indicator electrode. The detection limit is 0.02 μg/L for a 120 s deposition time. The influence of organic matter and inorganic interferences on the anodic stripping analysis of mercury was studied. The most popular methods of sample preparation were compared. Ozonation is the method of choice for rapid sample preparation of natural waters. For sample preparation of soil extracts the wet digestion with potassium peroxysulphate was selected. The procedure is applicable to the trace analysis of mercury(II) in different waters and soils.
Keywords :
electrodes; specimen preparation; voltammetry (chemical analysis); anodic stripping voltammetry; carbon electrode; indicator electrode; inorganic interferences; organic matter; ozonation; rapid sample preparation; soil extracts; wet digestion; Chemical technology; Chemistry; Costs; Electrochemical processes; Electrodes; Gold; Interference; Mercury (metals); Soil; Stability;
Conference_Titel :
Science and Technology, 2004. KORUS 2004. Proceedings. The 8th Russian-Korean International Symposium on
Print_ISBN :
0-7803-8383-4
DOI :
10.1109/KORUS.2004.1555539
