A new Schiff's base ligand immobilized agarose membrane optical sensor for selective monitoring of mercury ion

Alizadeh, Kamal; Parooi, Razieh; Hashemi, Payman; Rezaei, Behrooz; Ganjali, Mohammad Reza

doi:10.1016/j.jhazmat.2010.12.067

Cited by 86 publications

(45 citation statements)

References 42 publications

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“…Also by using optodes, real time analysis can be performed. Sensing material of an optical sensor can be adsorbed on the surface of support materials chemically and physically 26 ; chemically immobilized in an appropriate support [27][28] or physically entrapped in polymeric matrices [29][30][31] .…”

Section: Introductionmentioning

confidence: 99%

Design and fabrication of a novel optical sensor for determination of trace amounts of lutetium ion

Zare‐Dorabei¹,

Ganjali²,

Rahimi³

et al. 2013

10.5267/j.ccl

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In this study, for the first time we report a highly selective and sensitive lutetium ions chemical optical sensor based on immobilization of a asymmetrically S-N Schiff's base, namely N-(thien-2-ylmethylene)pyridine-2,6-diamine (TPD) on a triacetylcellulose membrane. This optode exhibits a linear range of 5.0 ×10 -7 -1.0 ×10 -5 M of the Lu(III) ion concentration with a detection limit of 9.3 ×10 -8 M at a wavelength of 336 nm. The influence of responsible factors for improving sensitivity of the sensor was studied and identified. Response time of the newly designed optode was within 20-30 s depending on the Lu(III) ion concentration. Response of the optical sensor is independent of the pH of the solution in the range of 3.0-9.0. It manifests advantages of fast response time, low detection limit and most significantly, very good selectivity with respect to a number of lanthanide ions. The sensor can readily be regenerated with thiourea solutions and its response was reversible and reproducible. This optode was applied to the determination of Lu(III) in aqueous and CRM samples.

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Section: Introductionmentioning

confidence: 99%

Design and fabrication of a novel optical sensor for determination of trace amounts of lutetium ion

Zare‐Dorabei¹,

Ganjali²,

Rahimi³

et al. 2013

10.5267/j.ccl

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show abstract

“…To investigate the selectivity of the proposed Ni 2+ optical membrane sensor, the absorbance of a fixed concentration of nickel ion, at 1.0 × 10 -8 mol L -1 level, in a solution of pH=6.0 was recorded before (∆A o ) and after (∆A) addition of some Figure 8. The data clearly indicate that, for all the studied metal ions, the relative error is up to 4%, which demonstrated that the studied interfering ions with a concentration of at least 100 times of Ni 2+ ion, have no significant effect on the analytical signal [21,34,35].…”

Section: Effect Of Interfering Ionsmentioning

confidence: 80%

“…It was found that the absorbance decreased continuously by increasing the Ni(II) concentration and the membrane was saturated when the Ni . According to the definition of IUPAC, the limit of detection (LOD, 3σ) of this method was 1.00 × 10 -10 mol L -1 which is sufficiently low for Ni 2+ monitoring in environmental samples [10,34,35]. The regression equation for the calibration curve shown in Figure 6 …”

Section: Calibration Curve Of the Sensormentioning

confidence: 97%

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A New Optical Sensor for Selective Monitoring of Nickel Ion Based on A Hydrazone Derivative Immobilized on the Triacetyl Cellulose Membrane

Alizadeh¹,

Rad²

2016

J Anal Bioanal Tech

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“…The lipophilic nature of methylmercury results in much more bioaccumulation in the aquatic food chain [9], and the up-level transfer to reach human diet [10]. Methylmercury triggers several serious disorders for humans including allergic reactions and brain and neurological damages [11], and it can cause chronic and acute human mercury poisoning such as Minamata disease [12]. Therefore, the elimination of methylmercury from water and wastewater is important to protect public health, and have received considerable attentions [13].…”

Section: Introductionmentioning

confidence: 99%

The Molecular Structure and Spectral Characteristics of Heavy Metal Chelating Agent of H3TMT and Its Complex (HgMe)3TMT with CH3HgCl

Wang¹,

Wang²,

Gong³

2015

IJCEA

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Abstract-In order to explore the molecular structure and spectral characteristics of 2,4,6-trimercaptotriazine (H 3 TMT) and its heavy metal chelating complex (HgCH 3 ) 3 TMT, quantum chemical calculations were performed using the density functional theory, B3LYP method. With the optimized geometries of H 3 TMT and (HgCH 3 ) 3 TMT, 13 C NMR chemical shifts and IR spectroscopic characteristics were calculated. In order to describe the molecular characteristics more accurately, descriptors such as the frontier molecular orbital energy, Fukui indices, the natural population analysis and global reactivity were obtained. In combination with the compositions of the highest orbital molecular orbital (HOMO), and the local reactivity descriptors, S and N atoms in H 3 TMT are the reactive sites, as was seen in the formation of metal complex of (HgCH 3 ) 3 TMT with CH 3 HgCl. The calculated molecular geometries, 13 C NMR chemical shifts and IR spectroscopic characteristics of (HgCH 3 ) 3 TMT are in good agreement with the experimental results, which indicates the simulation is reasonable. Theoretical investigation upon the heavy metal chelating agent of H 3 TMT is undoubtedly helpful for the design and synthesis of new materials, as well as the assessment of material performance.Index Terms-Density functional theory, quantum chemistry, 2,4,6-trimercaptotriazine (H 3 TMT), heavy metal chelating agent. I. INTRODUCTIONDue to the toxicity to human life and the environment, pollution of heavy metals becomes one of the most important worldwide ecological problems. During last decades, heavy metals have been largely introduced into the environment from natural and anthropogenic sources [1]. Among heavy metals, mercury is the second most toxic metal [2], and is also classified as the priority pollutant by the US Environmental Protection Agency (USEPA) [3]. Generally, mercury occurs in the environment as metallic, inorganic or organic mercury, and its ecological and toxicological effects are strongly dependent on its chemical form [4], [5]. Inorganic mercury has been reported to produce harmful effects at the concentration as low as 5μg/L [6], but organomercury compounds can exert the same effect at the concentration 10Manuscript received February 9, 2014; revised June 10, 2014. Feng-Yun Wang and Xue-Dong are with the Department of Chemistry, Nanjing University of Science and Technology, Nanjing, China (e-mail: dxf7569@sina.com, gongxd325@ mail.njust.edu.cn).Feng-He Wang is with the Department of Environmental Science and Engineering, Nanjing Normal University, Nanjing, China (e-mail: wangfenghe@njnu.edu.cn).times lower [7]. That is to say, the organic Hg compound is more toxic to living organisms than the inorganic ones [8]. Inorganic mercury can be converted into methyl mercury by methanorganic bacteria in aquatic environments [1], which is water-soluble. The lipophilic nature of methylmercury results in much more bioaccumulation in the aquatic food chain [9], and the up-level transfer to reach human diet [10]. Methylmercury trig...

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A new Schiff's base ligand immobilized agarose membrane optical sensor for selective monitoring of mercury ion

Cited by 86 publications

References 42 publications

Design and fabrication of a novel optical sensor for determination of trace amounts of lutetium ion

Design and fabrication of a novel optical sensor for determination of trace amounts of lutetium ion

A New Optical Sensor for Selective Monitoring of Nickel Ion Based on A Hydrazone Derivative Immobilized on the Triacetyl Cellulose Membrane

The Molecular Structure and Spectral Characteristics of Heavy Metal Chelating Agent of H3TMT and Its Complex (HgMe)3TMT with CH3HgCl

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