A new and simple procedure for the trace determination of mercury using differential pulse polarography and application to a salt lake sample

Authors : GÜLER SOMER, A CENGİZ ÇALIŞKAN, OLCAY ŞENDİL

Pages : 639-647

Doi:10.3906/kim-1412-19

View : 19 | Download : 11

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :A new and simple differential pulse polarographic procedure was established for the trace determination of mercuryinsert ignore into journalissuearticles values(II);. An indirect method had to be used since no polarographic peak can be observed for its direct determination. According to their standard potentials, the reaction between SO$_{3}^{2-}$ and Hginsert ignore into journalissuearticles values(II); was suitable. The peak height of sulfite at about -0.70 V insert ignore into journalissuearticles values(pH 6, 7); was sharp, high, and very reproducible, enabling the accurate determination of low concentrations of Hginsert ignore into journalissuearticles values(II);. It was found that sulfite concentration had to be 3 times larger than mercury at pH 6, in order to have a quantitative reaction.
Keywords : The procedure is simple to a known amount of sulfite in the polarographic cell HAc, pH 6 or 7, is added an unknown Hg II, sample The Hginsert ignore into jour