Highly Efficient Solid-Phase Labeling of Saccharides within Boronic Acid Functionalized Mesoporous Silica Nanoparticles

MSN@U based on urushiol with catechol groups possessed rapid hemostatic performance because they self-assembled into a Janus membrane at the interface.

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In vitro speciation of molybdenum in human biological samples based on thiol functionalized mesoporous silica nanoparticles and hexyl-methylimidazolium tris-pentafluoroethyl-trifluorophosphate

Analytical Methods in Environmental Chemistry Journal ◽

10.24200/amecj.v3.i03.115 ◽

2020 ◽

Vol 3 (03) ◽

pp. 54-64

Author(s):

Roya Ashori ◽

Seyed Alireza Hajiseyed Mirzahosseini

Keyword(s):

Ionic Liquid ◽

Mesoporous Silica ◽

Silica Nanoparticles ◽

Biological Samples ◽

Solid Phase ◽

Mesoporous Silica Nanoparticles ◽

Electrothermal Atomic Absorption Spectrometry ◽

Serum Samples ◽

Functionalized Mesoporous Silica

Molybdenum (Mo) ions enter to human body from the diet or drinking waters and have a potentially toxic effect on humans. The thiol-functionalized mesoporous silica nanoparticles (HS-MSNPs) were used for determination and speciation of Mo (II, VI) in human biological samples by dispersive ionic liquid-micro-solid phase extraction (DIL-μ-SPE) coupled to electrothermal atomic absorption spectrometry (ET-AAS). Firstly, the mixture of HS-MSNPs (15 mg), the hydrophobic ionic liquid (1-Hexyl-3-methylimidazolium tris(pentafluoroethyl) trifluorophosphate; [HMIM][T(PFE)PF3]) and acetone injected into 10 mL of human blood and serum samples. After shaking for 5 min, the Mo(II) and Mo(VI) ions were extracted with the thiol group of MSNPs at pH 6 and 2, respectively, and collected through IL at the bottom of the conical tube by centrifuging. Then, the MO(II,VI) ions were back-extracted from HS-MSNPs with elent based on changing pH, and remained solutions were determined by ET-AAS after dilution with DW up to 0.5 mL, separately.

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Specific enrichment combined with highly efficient solid-phase tagging for the sensitive detection of heparin based on boronic acid-functionalized mesoporous silica nanospheres

Chemical Communications ◽

10.1039/c6cc06128a ◽

2016 ◽

Vol 52 (79) ◽

pp. 11779-11782 ◽

Cited By ~ 5

Author(s):

Dong Zhu ◽

Jing Ye ◽

Yue Hu ◽

Hong Mei Wen ◽

An Kang ◽

...

Keyword(s):

Mesoporous Silica ◽

Boronic Acid ◽

Solid Phase ◽

Sensitive Detection ◽

Silica Nanospheres ◽

Highly Efficient ◽

Functionalized Mesoporous Silica ◽

Mesoporous Silica Nanospheres

Representation of the combined specific enrichment and solid-phase tagging approach within boronic acid-functionalized mesoporous silica nanospheres.

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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

Analytical Methods in Environmental Chemistry Journal ◽

10.24200/amecj.v2.i03.72 ◽

2019 ◽

pp. 39-50 ◽

Cited By ~ 4

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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