Sol-gel glass as a new support matrix in immunoaffinity chromatography

1995 ◽  
Vol 352 (7-8) ◽  
pp. 654-659 ◽  
Author(s):  
J. Z�hlke ◽  
D. Knopp ◽  
R. Niessner
Keyword(s):  
Sol Gel ◽  
Immunoaffinity Chromatography ◽  
Support Matrix

Sol−Gel-Based Immunoaffinity Chromatography:  Application to Nitroaromatic Compounds†

2000 ◽  
Vol 12 (7) ◽  
pp. 2050-2058 ◽  
Author(s):  
Alisa Bronshtein ◽  
Nadav Aharonson ◽  
Avner Turniansky ◽  
Miriam Altstein
Keyword(s):  
Sol Gel ◽  
Immunoaffinity Chromatography ◽  
Nitroaromatic Compounds

scholarly journals The Effect of Ni Addition onto a Cu-Based Ternary Support on the H2 Production over Glycerol Steam Reforming Reaction

Nanomaterials ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 931 ◽  
Author(s):  
Kyriaki Polychronopoulou ◽  
Nikolaos Charisiou ◽  
Kyriakos Papageridis ◽  
Victor Sebastian ◽  
Steven Hinder ◽  
...  
Keyword(s):  
Sol Gel ◽  
Strong Acid ◽  
H2 Production ◽  
Impregnation Method ◽  
Reaction Products ◽  
Cu Content ◽  
Ni Addition ◽  
Support Matrix ◽  
Temperature Programmed ◽  
H2 Yield

In the present study, Ni/Ce-Sm-xCu (x = 5, 7, 10 at.%) catalysts were prepared using microwave radiation coupled with sol-gel and followed by wetness impregnation method for the Ni incorporation. Highly dispersed nanocrystallites of CuO and NiO on the Ce-Sm-Cu support were found. Increase of Cu content seems to facilitate the reducibility of the catalyst according to the H2 temperature-programmed reduction (H2-TPR). All the catalysts had a variety of weak, medium and strong acid/basic sites that regulate the reaction products. All the catalysts had very high XC3H8O3 for the entire temperature (400–750 °C) range; from ≈84% at 400 °C to ≈94% at 750 °C. Ni/Ce-Sm-10Cu catalyst showed the lowest XC3H8O3-gas implying the Cu content has a detrimental effect on performance, especially between 450–650 °C. In terms of H2 selectivity (SH2) and H2 yield (YH2), both appeared to vary in the following order: Ni/Ce-Sm-10Cu > Ni/Ce-Sm-7Cu > Ni/Ce-Sm-5Cu, demonstrating the high impact of Cu content. Following stability tests, all the catalysts accumulated high amounts of carbon, following the order Ni/Ce-Sm-5Cu < Ni/Ce-Sm-7Cu < Ni/Ce-Sm-10Cu (52, 65 and 79 wt.%, respectively) based on the thermogravimetric analysis (TGA) studies. Raman studies showed that the incorporation of Cu in the support matrix controls the extent of carbon graphitization deposited during the reaction at hand.

Sol–Gel Immunoassays and Immunoaffinity Chromatography

2006 ◽  
pp. 357-384
Author(s):  
Miriam Altstein ◽  
Alisa Bronshtein
Keyword(s):  
Sol Gel ◽  
Immunoaffinity Chromatography

scholarly journals Determination of bisphenol A in wine by sol-gel immunoaffinity chromatography, HPLC and fluorescence detection

2006 ◽  
Vol 23 (11) ◽  
pp. 1227-1235 ◽  
Author(s):  
Z. Brenn-Struckhofova ◽  
M. Cichna-Markl
Keyword(s):  
Bisphenol A ◽  
Fluorescence Detection ◽  
Sol Gel ◽  
Immunoaffinity Chromatography

Sample clean-up by sol–gel immunoaffinity chromatography for the determination of bisphenol A in food and urine

Methods ◽  
2012 ◽  
Vol 56 (2) ◽  
pp. 186-191 ◽  
Author(s):  
Margit Cichna-Markl
Keyword(s):  
Bisphenol A ◽  
Sol Gel ◽  
Immunoaffinity Chromatography

New strategies in sample clean-up for mycotoxin analysis

2011 ◽  
Vol 4 (3) ◽  
pp. 203-215 ◽  
Author(s):  
M. Cichna-Markl
Keyword(s):  
Molecularly Imprinted Polymers ◽  
Solid Phase ◽  
Sol Gel ◽  
Immunoaffinity Chromatography ◽  
Review Article ◽  
Molecularly Imprinted ◽  
Selective Ligands ◽  
Mycotoxin Analysis ◽  
Harsh Conditions ◽  
New Strategies

So far, solid phase extraction, the use of MycoSep columns and immunoaffinity chromatography are the most common clean-up methods in mycotoxin analysis. Among these methods, immunoaffinity chromatography offers the highest selectivity and therefore the highest efficiency in removing interfering matrix compounds and enriching the analyte. Common immunoaffinity columns are prepared by covalently binding the antibodies to a solid support material which, due to the harsh conditions applied, frequently lowers their affinity for the antigen. The review article presents new strategies which have been developed to overcome this problem: sol-gel immunoaffinity chromatography, immuno-ultrafiltration, the use of aptamers as selective ligands and the application of molecularly imprinted polymers. The present paper covers the principles as well as the application of these approaches for sample clean-up in mycotoxin analysis.

Sample clean-up by sol-gel immunoaffinity chromatography for determination of chloramphenicol in shrimp

2007 ◽  
Vol 41 (2) ◽  
pp. 175-183 ◽  
Author(s):  
R. Stidl ◽  
M. Cichna-Markl
Keyword(s):  
Sol Gel ◽  
Immunoaffinity Chromatography

Sol–gel immunoaffinity chromatography for the clean up of ochratoxin A contaminated grains

2011 ◽  
Vol 1218 (42) ◽  
pp. 7627-7633 ◽  
Author(s):  
Elisabeth Viktoria Reiter ◽  
Margit Cichna-Markl ◽  
Natthasit Tansakul ◽  
Won-Bo Shim ◽  
Duck-Hwa Chung ◽  
...  
Keyword(s):  
Ochratoxin A ◽  
Sol Gel ◽  
Immunoaffinity Chromatography
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