Assessment of Hg2+ in hazardous wastes using chemosensor neutral red dye | ||||
| International Journal of Development | ||||
| Article 2, Volume 11, Issue 1, 2022, Page 15-25 PDF (338.62 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/idj.2022.281276 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Mohamed S. Attia  1; Mohamed E. Saad2; Taha F. Hassanein2; Eid Metwally Khalil2; Sheta M. Sheta3; Said M. El-Sheikh
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| 1Department of Chemistry, Faculty of Science, Ain Shams University, Cairo, Egypt | ||||
| 2Chemistry Department, Faculty of Science, Helwan University, Cairo, 11795, Egypt | ||||
| 3Inorganic Chemistry Department, National Research Centre, 33 El-Behouth St., Dokki, Giza, 12622, Egypt | ||||
| Abstract | ||||
| A new, simple, sensitive and selective spectrofluorimetric method for the determination of trace amounts of Hg2+ in hazardous wastes of fluorescent lamps using chemosensor neutral red dye is developed in acetonitrile at pH 6.6. The Hg2+ can remarkably quench the fluorescence intensity of neutral red dye in acetonitrile at λex = 380 nm. The lowering of fluorescence intensity of neutral red dye is proportional to the concentration of Hg2+ and it is used as optical sensor for its assessment. The dynamic range found for the determination of Hg2+ concentration is 2.3 × 10-9 – 8.0 ×10-6 mol l−1 with a detection limit of 1.0 ×10−11 mol l−1. | ||||
| Keywords | ||||
| Hg2+; Neutral red dye; Optical Sensor; Quenching; Fluorescence Intensity | ||||
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