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Faghiri F, Ghorbani F. Colorimetric and naked eye detection of trace Hg 2+ ions in the environmental water samples based on plasmonic response of sodium alginate impregnated by silver nanoparticles. JOURNAL OF HAZARDOUS MATERIALS 2019; 374:329-340. [PMID: 31022633 DOI: 10.1016/j.jhazmat.2019.04.052] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Revised: 03/31/2019] [Accepted: 04/14/2019] [Indexed: 06/09/2023]
Abstract
Water pollution with mercury is a global concern. Therefore, establishing a rapid and accurate detection method is urgently required. Nanosensors can be a perfect alternative to instrument detection. In order to overcome low sustainability of sensors, a new composite nanosensor of sodium alginate- silver nanoparticles (SA-AgNPs) was synthesized by solvent casting method and used in colorimetric and naked eye detection of trace Hg2+ ions in water samples. The structural features of the produced nanosensor were characterized by instrumental techniques. The obtained results confirmed the formation of AgNPs with an average size of 13.34 nm. The colorimetric sensing of Hg2+ was carried out under specific conditions (pH = 6 and reaction time of 7 min) with a linear correlation obtained between the absorbance at 402 nm and different Hg2+ ion concentrations within the range of 0.025 μM-60 μM. The synthesized composite nanosensor of SA-AgNPs detected Hg2+ ions with a detection limit (LOD) of 5.29 nM. In addition, this sensor was successfully applied to detect Hg2+ ions in the environmental water samples with recoveries within the range of 81.58% to 114.73%. The produced nanosensor exhibited good selectivity toward Hg2+ ions in the presence of several competing ions.
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Affiliation(s)
- Faranak Faghiri
- Department of Environmental Sciences, Faculty of Natural Resource, University of Kurdistan, 66177-15177, Sanandaj, Iran
| | - Farshid Ghorbani
- Department of Environmental Sciences, Faculty of Natural Resource, University of Kurdistan, 66177-15177, Sanandaj, Iran.
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Sharma G, Naushad M, Thakur B, Kumar A, Negi P, Saini R, Chahal A, Kumar A, Stadler FJ, Aqil UMH. Sodium Dodecyl Sulphate-Supported Nanocomposite as Drug Carrier System for Controlled Delivery of Ondansetron. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2018; 15:ijerph15030414. [PMID: 29495530 PMCID: PMC5876959 DOI: 10.3390/ijerph15030414] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Revised: 02/19/2018] [Accepted: 02/23/2018] [Indexed: 12/17/2022]
Abstract
Sodium dodecyl sulphate-supported iron silicophosphate (SDS/FeSP) nanocomposite was successfully fabricated by the co-precipitation method. The SDS/FeSP nanocomposite was investigated as a drug carrier for ondansetron. The cumulative drug release of ondansetron was observed at various pH values for different time intervals, i.e., from 20 min to 48 h. A ranking of the drug release was observed at different pHs; pH 2.2 > saline (pH 5.5) > pH 7.4 > pH 9.4 > distilled water. Maximum release of encapsulated drug was found to be about 45.38% at pH 2.2. The cell viability tests of SDS/FeSP nanocomposite concluded that SDS/FeSP nanocomposite was non-cytotoxic in nature.
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Affiliation(s)
- Gaurav Sharma
- Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, Nanshan District Key Lab for Biopolymers and Safety Evaluation, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, China.
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China.
- School of Chemistry, Shoolini University, Solan 173212, India.
| | - Mu Naushad
- Department of Chemistry, College of Science, Bld.#5, King Saud University, Riyadh 11451, Saudi Arabia.
| | - Bharti Thakur
- School of Chemistry, Shoolini University, Solan 173212, India.
| | - Amit Kumar
- Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, Nanshan District Key Lab for Biopolymers and Safety Evaluation, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, China.
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China.
- School of Chemistry, Shoolini University, Solan 173212, India.
| | - Poonam Negi
- School of Pharmaceutical Sciences, Shoolini University, Solan 173212, India.
| | - Reena Saini
- School of Applied Science and Biotechnology, Shoolini University, Solan 173212, India.
| | - Anterpreet Chahal
- School of Applied Science and Biotechnology, Shoolini University, Solan 173212, India.
| | - Ashok Kumar
- Department of Biotechnology and Bioinformatics, Jaypee University of Information Technology, Waknaghat, Solan 173234, India.
| | - Florian J Stadler
- Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, Nanshan District Key Lab for Biopolymers and Safety Evaluation, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, China.
| | - U M H Aqil
- School of Public Health, 3rd Floor, SRM Medical College and Research, Centre, Kattankulathur 603211, India.
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