N Alizadeh - Department of Chemistry, University of Guilan, P.B.41335-1914, Rasht, Iran
M Mahjoub - Department of Chemistry, University of Guilan, P.B.41335-1914, Rasht, Iran

The detection of sulfide ion has been paid much attention as a consequence of the toxicity ofhydrogen sulfide and the corresponding risk associated with exposure in anumber ofoccupational settings [1]. Hydrogen sulfide and its ionization products, bisulfide and sulfideare found in many natural waters and formed in anoxic waters by heterotrophic, sulfatereducingbacteria and as a result of geochemical processes in hydrothermal systems [2].Spectrophotometric methods can be implemented on a very simple, rapid, and inexpensiveequipment and provide lowlevel determination. These advantages cause thespectrophotometric methods to remain a lovely technique.