Cyanine-based dyes: highly sensitive sensors for the detection of the hypochlorite levels in drinking water based on fluorometry. | ||
| Delta Journal of Science | ||
| Volume 46, Issue 2, April 2023, Pages 148-162 PDF (1014.98 K) | ||
| Document Type: Research and Reference | ||
| DOI: 10.21608/djs.2023.206451.1108 | ||
| Authors | ||
| Nermeen S. Hafez* 1; Wael A. Amer1; Ehab A. Okba1; Hussein H. Alganzory2; Elzeiny M. Ebeid3 | ||
| 1Department of Chemistry, Faculty of Science, Tanta University, Tanta, Egypt | ||
| 2Department of Chemistry, Faculty of Science, Benha University, Benha, Egypt. | ||
| 3Chemistry Department, Faculty of Science, Tanta University, Tanta, Egypt. | ||
| Abstract | ||
| Drinking water is frequently disinfected with chlorine, and it is necessary to quantify any remaining chlorine in the form of the hypochlorite ion (ClO-). Many sensors are in use now, including colorimetric, fluorometric, and electrochemical ones, but detection limitations and simplicity of application continue to be a problem. This study discusses the findings of two novel ClO- sensors based on solvent-free microwave synthesis. The two sensors display rapid fluorescence response for ClO- with excellent selectivity over other analyte species as well as a low detection limit. According to fluorometric performance, the sensors have low detection limits of 1.71 nM and 2.46 nM for sensors I and II, respectively, and they can detect ClO- unaffected by other dangerous water pollutants. For the detection of ClO- in real water samples, the approach produced good recovery results, ranging from 98 to 102.1%. These sensors offer a straightforward and useful approach for tracking ClO- levels in the water, as well as a low-cost and highly sensitive detection method. The sensing mechanism is explained in terms of the radical cations that are produced when the cyanine sensors I and II are exposed to ClO-. | ||
| Keywords | ||
| Fluorescent probe; ClO-; tap water; Limit of detection (LOD); Limit of quantification (LOQ) | ||
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