Document Type : Original Article
Authors
1 Department of Chemistry, Payame Noor University, 19395-4697 Tehran, Islamic Republic of Iran
2 Department of Chemistry, Payame Noor University, Tehran,, Iran.
3 Department of Chemistry, Payame Noor University, Tehran,, Iran
Abstract
Military training activities are a serious concern for defense organizations around the world. These activities, targeting underground soils, are environmental pollutants. On the other hand, providing suitable drinking water for the field forces is only one of the engineering department’s numerous and diverse military duties. Therefore, it is necessary to investigate the various pollutants in the water that Defense environments need to explore.
In this research, a new type of available, fast, highly sensitive, and selective colorimetric method for the determination of sulfide ions using a complex based on a metal mixture of ligands is presented. In this study, the Zn2+ complex with Eriochrome Black T dye (EBT) and the complex formed with erythrosine dye (ERS) was proposed (EBT-Zn2+-ERS) as a sulfide anion chemosensor for the first time. The linear range of sulfide is 0.20-92.85 µmol/L and its correlation coefficient is 0.9917. Also, the method's detection limit was 0.04 μmol/L, and the relative deviation in two concentrations of 0.38 and 0.69 μmol/L was 1.64 and 0.84%, respectively. The presented method was successfully used the rapidly determine of sulfide ions in samples of drinking water from military barracks, mineral water, and Maharlo Lake water.
This method is less expensive than previous methods, and is recommended for various fields in defense environments.
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