On-line Ultrasound-Assisted Dispersive Micro-Solid-Phase Extraction Based on Amino Bimodal Mesoporous Silica Nanoparticles for the Preconcentration and Determination of Cadmium in Human Biological Samples

2015 ◽  
Vol 171 (2) ◽  
pp. 472-481 ◽  
Author(s):  
H. Shirkhanloo ◽  
M. Falahnejad ◽  
H. Zavvar Mousavi
Keyword(s):  
Mesoporous Silica ◽  
Solid Phase Extraction ◽  
Silica Nanoparticles ◽  
Biological Samples ◽  
Solid Phase ◽  
Mesoporous Silica Nanoparticles ◽  
Phase Extraction ◽  
On Line ◽  
Ultrasound Assisted

Solid-phase extraction of phospholipids using mesoporous silica nanoparticles: application to human milk samples

2018 ◽  
Vol 410 (20) ◽  
pp. 4847-4854 ◽  
Author(s):  
Héctor Martínez Pérez-Cejuela ◽  
Isabel Ten-Doménech ◽  
Jamal El Haskouri ◽  
Pedro Amorós ◽  
Ernesto F. Simó-Alfonso ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Solid Phase Extraction ◽  
Human Milk ◽  
Silica Nanoparticles ◽  
Solid Phase ◽  
Mesoporous Silica Nanoparticles ◽  
Phase Extraction ◽  
Milk Samples

scholarly journals Separation and determination of lead in human urine and water samples based on thiol functionalized mesoporous silica nanoparticles packed on cartridges by micro column fast micro solid-phase extraction

2019 ◽  
pp. 39-50 ◽  
Author(s):  
Maling Gou ◽  
*Baharak Bahrami Yarahmadi
Keyword(s):  
Mesoporous Silica ◽  
Solid Phase Extraction ◽  
Silica Nanoparticles ◽  
Water Samples ◽  
Solid Phase ◽  
Mesoporous Silica Nanoparticles ◽  
Electrothermal Atomic Absorption Spectrometry ◽  
Cellulose Membrane ◽  
Phase Extraction ◽  
Functionalized Mesoporous Silica

An efficient method based on thiol functionalized mesoporous silica nanoparticles (HS-MSNPs) was used for extraction of lead ions (PbII) from urine and water samples by packed column micro solid phase extraction (PC-MSPE). By procedure, 15 mg of HS-MSNPs packed in syringe cartridges (SC, 5 mL) with cellulose membrane and pH adjusting at 5.5-6.5.  Then, the lead of urine and water sample was efficiently extracted on HS-MSNPs after pushing the plunger of a syringe. Finally, the Pb (II) was back-extracted with inorganic acid solution and the remained solution determined by electrothermal atomic absorption spectrometry (ET-AAS). By optimization conditions, the enrichment factor, LOD, linear range and RSD% was obtained 24.8, 0.04 μg L-1, 0.12-5.5 μg L-1 and less than 5%, respectively for 5 mL of urine samples. The validation was confirmed by spiking of real samples and using certified reference material (CRM, NIST) in water and urine sample.

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