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.

Molecularly imprinted polymers for selective solid-phase extraction of phospholipids from human milk samples

2017 ◽  
Vol 184 (9) ◽  
pp. 3389-3397 ◽  
Author(s):  
Isabel Ten-Doménech ◽  
Héctor Martínez-Pérez-Cejuela ◽  
María Jesús Lerma-García ◽  
Ernesto Francisco Simó-Alfonso ◽  
José Manuel Herrero-Martínez
Keyword(s):  
Solid Phase Extraction ◽  
Human Milk ◽  
Molecularly Imprinted Polymers ◽  
Solid Phase ◽  
Phase Extraction ◽  
Molecularly Imprinted ◽  
Imprinted Polymers ◽  
Milk Samples

GC-MS Analysis of Phthalates and Di-(2-thylhexyl) Adipate in Canadian Human Milk for Exposure Assessment of Infant Population

2020 ◽  
Author(s):  
Xu-Liang Cao ◽  
Melissa Sparling ◽  
Wendy Zhao ◽  
Tye E Arbuckle
Keyword(s):  
Solid Phase Extraction ◽  
Human Milk ◽  
Exposure Assessment ◽  
Solid Phase ◽  
Environmental Chemicals ◽  
Phase Extraction ◽  
Dispersive Solid Phase Extraction ◽  
Low Frequencies ◽  
Milk Samples ◽  
Ms Analysis

Abstract Background Although more information has become available on the occurrence of phthalates and di(2-ethylhexyl) adipate (DEHA) in foods including cow’s milk, information on their presence in human milk, the important and recommended sole diet for infants up to six months of age, is very limited, especially for DEHA. Objective To develop a GC-MS method for simultaneous analysis of DEHA and phthalates in human milk samples and generate occurrence data for exposure assessment. Method Human milk samples were extracted with acetonitrile followed by dispersive solid-phase extraction and GC-MS analysis. Results Among the 305 human milk samples collected from the Canadian Maternal-Infant Research on Environmental Chemicals Study, some phthalates (DHxP, BBzP, and DOP) were not detected in any of the samples, while DEHA and the other phthalates (DMP, DEP, DBP, DiBP, and DEHP) were detected at low frequencies with levels from 30.4–237 ng/g in up to 31 of the 305 human milk samples. Conclusions In general, DEHA and phthalates were detected at low frequencies and low levels in the 305 human milk samples. Highlights A GC-MS method based on dispersive solid phase extraction was developed for analysis of DEHA and eight phthalates in 305 human milk samples for exposure assessment.

scholarly journals SPION-decorated organofunctionalized MCM48 silica-based nanocomposites for magnetic solid-phase extraction

2021 ◽  
Vol 2 (3) ◽  
pp. 963-973
Author(s):  
Daniel Garcia-Osorio ◽  
Helton P. Nogueira ◽  
Josué M. Gonçalves ◽  
Sergio H. Toma ◽  
Sergio Garcia-Segura ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Solid Phase Extraction ◽  
Solid Phase ◽  
Magnetic Solid Phase Extraction ◽  
Critical Micellar Concentration ◽  
Phase Extraction ◽  
Ordered Mesoporous Silica ◽  
Ordered Mesoporous ◽  
Magnetic Solid ◽  
Magnetic Recovery

(a) Cubic structures formed by CTAB above critical micellar concentration used as a template to generate highly ordered mesoporous silica. (b) Photo showing the magnetic recovery of MCM48/SPION/C8 nanocomposite in 60 s.

Sign in / Sign up

Export Citation Format

Share Document