Study of the sorption of selected pesticides on nonpolar sorbents

1991 ◽  
Vol 56 (2) ◽  
pp. 317-333 ◽  
Author(s):  
Ladislav Svoboda ◽  
Pavel Jandera ◽  
Jaroslav Churáček
Keyword(s):  
Silica Gel ◽  
Sorption Process ◽  
Hplc Method ◽  
Modified Silica ◽  
Experimental Conditions ◽  
Modified Silica Gel ◽  
Octadecyl Silica Gel ◽  
Pesticides In Water ◽  
Dilute Aqueous Solution ◽  
Styrene Divinylbenzene

The break-through curves of aqueous solutions of selected pesticides were evaluated to determine the suitability of a number of nonpolar sorbents based on active carbon, synthetic polymers and modified silica gel for enrichment dilute aqueous solution of these compounds. The best results were obtained using the styrene-divinylbenzene sorbents Aquapak 440A and Amberlite XAD-2, the styrene-ethylenedimethacrylate copolymer Separon SE and octadecyl silica gel materials. The effect of some experimental conditions on the sorption process, i.e. the flow rate of the sample through the column, the pesticide concentration in solution, the pH of the sorption medium, etc., was also studied. The results obtained are immediately applicable to the concentration of trace amounts of pesticides in water samples in sorption columns and also to chromatographic analysis by the HPLC method.

scholarly journals Determination of Diborane by Adsorption Sampling using Modified Silica Gel and the Chromotropic Acid-HPLC Method.

1992 ◽  
Vol 30 (1) ◽  
pp. 35-45 ◽  
Author(s):  
Mariko ONO-OGASAWARA ◽  
Mitsuya FURUSE ◽  
Yoshimi MATSUMURA ◽  
Kozo YOKOTA ◽  
Katsumi NAITO
Keyword(s):  
Silica Gel ◽  
Hplc Method ◽  
Chromotropic Acid ◽  
Modified Silica ◽  
Modified Silica Gel

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.

Synthesis Process and Structure of Al/Mg Modified Silica-gel Particle.

2000 ◽  
Vol 116 (1) ◽  
pp. 56-61
Author(s):  
Tatsuo YAMAGUCHI ◽  
Toshiaki NAKAI ◽  
Kunihiko TAKEDA
Keyword(s):  
Silica Gel ◽  
Synthesis Process ◽  
Modified Silica ◽  
Modified Silica Gel

DFT studies on coordination models for adsorption essays of Cu(II) and Ni(II) solutions in modified silica gel with iminodiacetic groups

2016 ◽  
Vol 71 (6) ◽  
pp. 1019-1030 ◽  
Author(s):  
Alexander Carreño ◽  
Eduardo Schott ◽  
Ximena Zarate ◽  
Juan Manuel Manriquez ◽  
Juan C. Vega ◽  
...  
Keyword(s):  
Silica Gel ◽  
Dft Studies ◽  
Modified Silica ◽  
Modified Silica Gel

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
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