scholarly journals Solid-Phase Reagents on the Modified Silica Gel Base for the Rapid Determination of Nickel(II) Ions

2021 ◽  
Vol 666 (3) ◽  
pp. 032080
Author(s):  
T I Maslakova ◽  
I G Pervova
Keyword(s):  
Silica Gel ◽  
Solid Phase ◽  
Rapid Determination ◽  
Modified Silica ◽  
Modified Silica Gel ◽  
Determination Of Nickel

Determination of trace sulfonamides in foodstuffs by HPLC using a novel mixed-mode functionalized ferrocene sorbent for solid-phase extraction cleanup

2016 ◽  
Vol 8 (31) ◽  
pp. 6099-6106 ◽  
Author(s):  
Lijun Qiao ◽  
Xiaohua Zhou ◽  
Yanhao Zhang ◽  
Ajuan Yu ◽  
Shusheng Zhang ◽  
...  
Keyword(s):  
Solid Phase Extraction ◽  
Silica Gel ◽  
Mixed Mode ◽  
Solid Phase ◽  
Hplc Method ◽  
Phase Extraction ◽  
Modified Silica ◽  
Modified Silica Gel

In this paper, a rapid and effective HPLC method, using a new 4-chloro-6-pyrimidinylferrocene-modified silica gel (NFcSi) as a solid-phase extraction (SPE) sorbent, was developed for the purification and determination of trace sulfonamides in foodstuffs.

Preconcentration and determination of Cu(II) in a fresh water sample using modified silica gel as a solid-phase extraction adsorbent

2010 ◽  
Vol 175 (1-3) ◽  
pp. 399-403 ◽  
Author(s):  
A.S. Pereira ◽  
G. Ferreira ◽  
L. Caetano ◽  
M.A.U. Martines ◽  
P.M. Padilha ◽  
...  
Keyword(s):  
Solid Phase Extraction ◽  
Water Sample ◽  
Fresh Water ◽  
Silica Gel ◽  
Solid Phase ◽  
Phase Extraction ◽  
Modified Silica ◽  
Modified Silica Gel

scholarly journals The Solid Phase Extraction of Some Metal Ions Using Palladium Nanoparticles Attached to Silica Gel Chemically Bonded by Silica-Bonded N-Propylmorpholine as New Sorbent prior to Their Determination by Flame Atomic Absorption Spectroscopy

2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
M. Ghaedi ◽  
M. Rezakhani ◽  
S. Khodadoust ◽  
K. Niknam ◽  
M. Soylak
Keyword(s):  
Electron Microscopy ◽  
Metal Ions ◽  
Silica Gel ◽  
Solid Phase ◽  
Food Samples ◽  
Natural Food ◽  
Modified Silica Gel ◽  
Flame Atomic Absorption ◽  
Relative Standard

In this research at first palladium nanoparticle attached to a new chemically bonded silica gel has been synthesized and has been characterized with different techniques such as X-ray diffraction (XRD), fourier transform infrared (FT-IR), transmission electron microscopy (TEM), and scanning electron microscopy (SEM). Then, this new sorbent (chemically modified silica gel with N-propylmorpholine (PNP-SBNPM)) was efficiently used for preconcentration of some metal ions in various food samples. The influence of effective variables including mass of sorbent, flow rate, pH of sample solutions and condition of eluent such as volume, type and concentration on the recoveries of understudy metal ions were investigated. Following the optimization of variables, the interfering effects of some foreign ions on the preconcentration and determination of the investigated metal ions described. At optimum values of variables, all investigated metal ions were efficiently recovered with efficiency more than 95%, relative standard deviation (RSD) between 2.4 and 2.8, and detection limit in the range of 1.4–2.7 ng mL−1. The present method is simple and rapidly applicable for the determination of the understudied metal ions (ng mL−1) in different natural food samples.

ICP-OES determination of trace metal ions after preconcentration by 4-(8-hydroxy-5-quinolylazo)naphthalenesulfonic acid modified silica gel

2008 ◽  
Vol 891 (1-3) ◽  
pp. 45-49 ◽  
Author(s):  
Xijun Chang ◽  
Haixia Luo ◽  
Yuemei Cui ◽  
Xiangbing Zhu ◽  
Yunhui Zhai ◽  
...  
Keyword(s):  
Trace Metal ◽  
Metal Ions ◽  
Silica Gel ◽  
Icp Oes ◽  
Modified Silica ◽  
Modified Silica Gel ◽  
Trace Metal Ions

Determination of Cu, Ni, and Zn in fuel ethanol by FAAS after enrichment in column packed with 2-aminothiazole-modified silica gel

2003 ◽  
Vol 375 (4) ◽  
pp. 574-577 ◽  
Author(s):  
P. S. Roldan ◽  
I. L. Alcântara ◽  
G. R. Castro ◽  
J. C. Rocha ◽  
C. C. F. Padilha ◽  
...  
Keyword(s):  
Silica Gel ◽  
Fuel Ethanol ◽  
Modified Silica ◽  
Modified Silica Gel

Functionalization of silica gel with 5-hydroxymethylfurfural: preparation, characterization and preliminary verification

2017 ◽  
Vol 41 (12) ◽  
pp. 4738-4742 ◽  
Author(s):  
Cheng Wang ◽  
Limin Huang ◽  
Yuanyuan Lin ◽  
Youjia Li ◽  
Yajing Hou ◽  
...  
Keyword(s):  
Liquid Chromatography ◽  
Silica Gel ◽  
Solid Phase ◽  
Hybrid Composites ◽  
Modified Silica ◽  
Modified Silica Gel ◽  
Inorganic Hybrid

Herein, we report the organic–inorganic hybrid composites comprising surficial-modified silica gel with 5-HMF as a solid phase for liquid chromatography.

Effective phospholipid removal from plasma samples by solid phase extraction with the use of copper (II) modified silica gel cartridges

2017 ◽  
Vol 1070 ◽  
pp. 1-6 ◽  
Author(s):  
Jolanta Flieger ◽  
Małgorzata Tatarczak-Michalewska ◽  
Anna Kowalska ◽  
Anna Madejska ◽  
Tomasz Śniegocki ◽  
...  
Keyword(s):  
Solid Phase Extraction ◽  
Silica Gel ◽  
Solid Phase ◽  
Phase Extraction ◽  
Plasma Samples ◽  
Modified Silica ◽  
Modified Silica Gel

Preparation of Adsorbents Based on Dendrimer Modified Silica Gel and its Adsorption Performances for Lead

2013 ◽  
Vol 800 ◽  
pp. 166-172
Author(s):  
Xiong Zhi Wu ◽  
Li Li ◽  
Fei Ping Li ◽  
Wen Ying Jin
Keyword(s):  
Standard Deviation ◽  
Relative Standard Deviation ◽  
Silica Gel ◽  
Limit Of Detection ◽  
Modified Silica ◽  
Modified Silica Gel ◽  
Flame Atomic Absorption ◽  
Relative Standard ◽  
Separation And Preconcentration

A new sorbent (PAMAM4.0GASG) with gallic acid as functional group has been prepared based on G4.0 polyamidoamine dendrimer modified silica gel (PAMAM4.0SG) and characterized with FTIR. It was employed for selective separation, preconcentration and determination of lead in different samples by flame atomic absorption spectrometry (FAAS). Experimental conditions for effective separation and preconcentration of lead were optimized. The preconcentration factor reaches 200 for lead. The relative standard deviation (R.S.D.) under optimum conditions was 2.1% for 5.0 μg ml1 of Pb (II).The relative standard deviation (R.S.D.) was 2.1% for 5.0 μg ml1 of Pb (II). The limit of detection (LOD) of 0.081μg ml1 was achieved with a sample loading flow rate of 4.2 ml min1 and a 10 ml sample volume in the proposed method. The proposed column enrichment method was applied for the preconcentration/separation and determination of Pb (II) in tap water and river water samples successfully.

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