Investigation of Disulphiram compounds on metallic ions

New optode membranes for the sensitive and selective determination of Zinc(II) ion based on a change in the absorption of a polymer film is proposed. The interaction between sulfide bis (2-propoxicarbonile), with various cations containing : Cu2+, Hg2+, Co2+, Ni2+, Cd2+, Ag+, Fe3+ and Mn2+ in Acetonitrile as a solvent was studied by spectrophotometry method and the results have exhibited interaction between SBPT and different Cations. The membranes composed of plasticized poly vinyl chloride (PVC) , plasticizers , additive and SBPT as a ionophore were prepared. The influence of some parameters such as time , nature of plasticizers and membrane composition on the response of sensors were investigated and membranes with optimum composition were selected. The optodes of 5, 6 and 7 respectively have a dynamic range 4.36×10-11M to 4.42×10-4M ,4.3×10-10M to 4.01×10-3M and 1.9×10-9M to 2×10-4 M. optical sensors based on SBPT respectively, exhibited detection limit 4.36×10-11M, 4.3×10-10M and 1.9 ×10-9 M. The sensors have a response time 6 minutes.