Solid phase extraction of trace amounts of Ag, Cd, Cu, and Zn in environmental samples using magnetic nanoparticles coated by 3-(trimethoxysilyl)-1-propantiol and modified with 2-amino-5-mercapto-1,3,4-thiadiazole and their determination by ICP-OES

Mashhadizadeh, Mohammad Hossein; Karami, Zahra

doi:10.1016/j.jhazmat.2011.04.051

Cited by 181 publications

(55 citation statements)

References 36 publications

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“…The typical adsorption peak for Fe 3 O 4 at 585 cm −1 was due to Fe-O stretching vibration peak Idris 2015;Singh et al 2011). A broad strong band at 1090 cm −1 contributes to Si-O-Si stretching vibration peak Idris 2015;Mashhadizadeh and Karami 2011), while bands at 800 and 465 cm −1 due to the Si-O bending and stretching mode were obvious (Huang et al 2012), which confirmed that successful coating of silica layers on Fe 3 O 4 . The broad adsorption peak at around 3425 cm −1 resulted from O-H stretching vibration (Huang et al 2012;Ren et al 2013), and 1633 and 958 cm −1 were characteristic bending bands of O-H (Yuan et al 2014).…”

Section: Characterization Of the Sorbentmentioning

confidence: 60%

Preparation of Pyridinium-Functionalized Magnetic Adsorbent and Its Application for Nitrate Removal from Aqueous Solution

Wang

et al. 2015

Water Air Soil Pollut

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A novel magnetic pyridinium-functionalized mesoporous silica adsorbent (Fe 3 O 4 @SiO 2 @Py-Cl) was synthesized for nitrate removal from aqueous solutions. The adsorption performances were investigated by varying experimental conditions such as pH, contact time, and initial concentration. The adsorbent was characterized by transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared (FT-IR) spectroscopy, and magnetic hysteresis loops. The results showed that the adsorption equilibrium could be reached within 30 min and the kinetic data were fitted well by pseudo-second-order and intraparticle diffusion model. The adsorbent exhibited a favorable performance, and its maximum adsorption capacity calculated by the Langmuir isotherm model was 1.755 mmol/g. The nitrate adsorption mechanism was mainly controlled by the material through ion exchange of nitrate with chloridion, as determined by XPS. This study indicated that this novel pyridinium-functionalized mesoporous material had excellent adsorption capacity. Meanwhile, compared with other adsorbents, it could remove nitrate fast and easy to be collected by magnetic separation, showing great potential application for nitrate removal from aqueous solution.

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Section: Characterization Of the Sorbentmentioning

confidence: 60%

Preparation of Pyridinium-Functionalized Magnetic Adsorbent and Its Application for Nitrate Removal from Aqueous Solution

Wang

et al. 2015

Water Air Soil Pollut

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“…Mashhadizadeh and Karami (2011) [97] also studied the effect of sample solution volume on the extraction of Ag, Cd, Cu, and Zn ions using modified magnetic nanoparticles. Different volumes (50-300 mL) of aqueous solution spiked with a fixed 5 µg of each metal ion were used in the experiments.…”

Section: Sample Volumementioning

confidence: 99%

Magnetic Adsorbents for the Recovery of Precious Metals from Leach Solutions and Wastewater

Aghaei

Alorro

Encila

et al. 2017

Metals

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Precious metals which include the platinum group, gold, and silver, play indispensable roles in high technology industries of the modern world due to their outstanding physical and chemical properties. As a result of diminishing availability of mineral sources, increasing demand, and environmental concerns, the recovery of precious metals from both leaching and industrial waste solutions is becoming a very important technology. Magnetic solid phase extraction (MSPE) is a technique that has received substantial consideration in the separation and recovery of precious metals because of the many advantages it offers compared to conventional methods. This technique is based on the extraction of different analytes from solutions using solid adsorbents with magnetic properties. This review focuses on different types of magnetic adsorbents, the main procedures used for synthesis, characterization and their application in precious metals recovery based on recently published literatures.

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“…17 In addition, NPs have been found to be capable of absorbing and separating metals from aqueous or organic solutions. 18,19 TiO 2 NPs have been tested as a sorbent in the solid-phase extraction for preconcentrated lead (Pb) in river water and seawater. [20][21][22] Zhang et al 20 investigated the potential acute toxicity of the interaction between TiO 2 NPs (50 nm and 120 nm) and lead acetate (PbAC) in mice.…”

Section: Effects Of Tio 2 Np Interaction With Metals and Their Compoundsmentioning

confidence: 99%

Toxic effects of the interaction of titanium dioxide nanoparticles with chemicals or physical factors

Liu

Lin²,

Zhao

2013

IJN

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Due to their chemical stability and nonallergic, nonirritant, and ultraviolet protective properties, titanium dioxide (TiO 2 ) nanoparticles (NPs) have been widely used in industries such as electronics, optics, and material sciences, as well as architecture, medicine, and pharmacology. However, increasing concerns have been raised in regards to its ecotoxicity and toxicity on the aquatic environment as well as to humans. Although insights have been gained into the effects of TiO 2 NPs on susceptible biological systems, there is still much ground to be covered, particularly in respect of our knowledge of the effects of the interaction of TiO 2 NPs with other chemicals or physical factors. Studies suggest that interactions of TiO 2 NPs with other chemicals or physical factors may result in an increase in toxicity or adverse effects. This review highlights recent progress in the study of the interactive effects of TiO 2 NPs with other chemicals or physical factors.

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Solid phase extraction of trace amounts of Ag, Cd, Cu, and Zn in environmental samples using magnetic nanoparticles coated by 3-(trimethoxysilyl)-1-propantiol and modified with 2-amino-5-mercapto-1,3,4-thiadiazole and their determination by ICP-OES

Cited by 181 publications

References 36 publications

Preparation of Pyridinium-Functionalized Magnetic Adsorbent and Its Application for Nitrate Removal from Aqueous Solution

Preparation of Pyridinium-Functionalized Magnetic Adsorbent and Its Application for Nitrate Removal from Aqueous Solution

Magnetic Adsorbents for the Recovery of Precious Metals from Leach Solutions and Wastewater

Toxic effects of the interaction of titanium dioxide nanoparticles with chemicals or physical factors

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