Salicylic acid functionalized silica-coated magnetite nanoparticles for solid phase extraction and preconcentration of some heavy metal ions from various real samples

Shishehbore, M. Reza; Afkhami, Abbas; Bagheri, Hasan

doi:10.1186/1752-153x-5-41

Cited by 94 publications

(40 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These appear to originate from the ligand molecule, and are characteristic of O-H stretching, the carboxylic acid (COO -) group, -N=N-stretching, phenol group vibrations and C-O stretching, respectively. 22 This supports the loading of salicylic acid onto Amberlite XAD-16, as shown in Fig. 1a.…”

Section: Characterization Study Of Chelating Resin (Sa-16) Ft-irmentioning

confidence: 64%

See 1 more Smart Citation

Online Preconcentration Procedure for Chromium Speciation and Determination in Industrial Water Samples Using Flame Atomic Absorption Spectrometry

2016

View full text Add to dashboard Cite

An online preconcentration system based on solid-phase extraction was developed for speciation and determinations of Cr in industrial water samples using flame atomic absorption spectrometry. A minicolumn packed with Amberlite XAD-16 loaded with salicylic acid was used to preconcentrate chromium species. All flow and chemical parameters that influence sorption were studied. The preconcentration factor and detection limit for the preconcentration time of 120 s were 79 and 0.10 μg L -1 , respectively. The concentration of Cr(VI) species was calculated by the difference of the total Cr and Cr(III). The relative standard deviation (RSD) (five replicate of measurements) for 50 and 100 μg L -1 Cr(III) solution was 1.2 and 1.0% respectively. The accuracy of the method was verified by analyzing a standard reference material (NIST SRM 1640a, trace elements in natural water). The proposed preconcentration method was successfully applied to the determination of Cr species in industrial water samples with satisfactory results.

show abstract

Section: Characterization Study Of Chelating Resin (Sa-16) Ft-irmentioning

confidence: 64%

“…Salicylic acid has carboxylic and phenolic groups that act as electron-pair donors, so they can interact with hard and intermediate cations. 22 The developed FI-SPE-FAAS system was applied to industrial water samples.…”

Section: Introductionmentioning

confidence: 99%

Online Preconcentration Procedure for Chromium Speciation and Determination in Industrial Water Samples Using Flame Atomic Absorption Spectrometry

2016

View full text Add to dashboard Cite

show abstract

“…Moreover, the XRD pattern of MM@SiO 2 -DETA (1:1) [ Fig. 3(c)] shows the board peak around 2θ = 20-30° due to the addition of amorphous silica and TMSPDETA on the surface of magnetic material which may cover the crystal particles and lead to the decrease of peak intensity [31]. Magnetization: The magnetic properties of the magnetic material, MM@SiO 2 and MM@SiO 2 -DETA (1:1) were measured by VSM and the results are shown in Fig.…”

Section: Fe3o4(s) + 8hcl(aq) → 2fecl3(aq) + Fecl2(aq) + 4h2o(l)mentioning

confidence: 99%

Functionalization of Silica Coated on Iron Sand Magnetic Material with Diethylenetriamine

Fahmiati¹,

Nuryono²,

Suyanta³

2018

Asian J. Chem.

View full text Add to dashboard Cite

Diethylenetriamine (DETA) functionalized silica coated on magnetic material of iron sand (MM@SiO2-DETA) has been synthesized by sol-gel method. Synthesis was carried out by coating magnetic material of iron sand as the core with diethylenetriamine-modified silica using sodium silicate solution and N 1 -(3-trimethoxysylilpropyl)diethylenetriamine (TMPSDETA) as silica and diethylenetriamine group sources, respectively. Several variations of mole ratio of silica to DETA at a constant weight of magnetic material were examined to evaluate the effect of the coating agent amount on the properties of MM@SiO2-DETA. MM@SiO2-DETA was characterized with Fourier transform infrared spectrophotometer, X-ray diffraction, scanning electron microscope with energy dispersive spectroscope (SEM-EDX), vibrating sample magnetometer and thermal gravimetric analysis. Stability test of product toward acidic solution and the effect of mole ratio of SiO2 and DETA on adsorption of Au(III) also evaluated. The characterization results indicated that SiO2 and DETA groups were successfully attached to the surface of magnetic material to form MM@SiO2-DETA. Characteristic bands of the vibration of propyl and amino groups derived from DETA; indicating that DETA was successfully reacted with MM@SiO2. Coating of magnetic material with SiO2 exhibits the decrease in Ms up to 38.2 emu/g and 23.5 emu/g after coating with SiO2-DETA. Thermalgravimetric analysis indicate thermal stability of the resulted product of MM@SiO2-DETA (1:1) up to 350 °C. Dissolution by acid solution can be diminished by coating magnetic material with silica. Gold(III) adsorption capacity of MM@SiO2-DETA (1:0.5), MM@SiO2-DETA (1:1) and MM@SiO2-DETA (1:2) are found to be higher than 92 %.

show abstract

“…The amino-functionalized Fe 3 O 4 @SiO 2 nanoadsorbent exhibited high adsorption affinity for aqueous Cu(II), Pb(II), and Cd(II) ions, resulting from complexation of the metal ions by surface amino groups. Moreover, the adsorption affinity for heavy metal ions was not much affected by the presence of a cosolute of humic acid or alkali/earth metal ions (Na Shishehbore et al [43] reported a method for the pre-concentration of trace heavy metal ions in environmental samples. The method is based on the sorption of Cu(II), Cd(II), Ni(II) and Cr(III) ions with salicylic acid as chelate on silica-coated magnetite nanoparticles.…”

Section: Metal Removalmentioning

confidence: 99%

Applications of Magnetite Nanoparticles for Heavy Metal Removal from Wastewater

Carlos¹,

Einschlag²,

González³

et al. 2013

Waste Water - Treatment Technologies and Recent Analytical Developments

View full text Add to dashboard Cite

Salicylic acid functionalized silica-coated magnetite nanoparticles for solid phase extraction and preconcentration of some heavy metal ions from various real samples

Cited by 94 publications

References 31 publications

Online Preconcentration Procedure for Chromium Speciation and Determination in Industrial Water Samples Using Flame Atomic Absorption Spectrometry

Online Preconcentration Procedure for Chromium Speciation and Determination in Industrial Water Samples Using Flame Atomic Absorption Spectrometry

Functionalization of Silica Coated on Iron Sand Magnetic Material with Diethylenetriamine

Applications of Magnetite Nanoparticles for Heavy Metal Removal from Wastewater

Contact Info

Product

Resources

About