Topic
Silica gel
About: Silica gel is a research topic. Over the lifetime, 22313 publications have been published within this topic receiving 325516 citations. The topic is also known as: Amorphous silica & Precipitated amorphous silica.
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TL;DR: This thin-layer chromatography method was used to separate pathological oligosaccharides isolated from individuals with G M1 gangliosidosis and with neuraminidase deficiency, indicating the potential usefulness of the system in the analysis of complex carbohydrates.
87 citations
TL;DR: In this paper, the metal organic framework materials (MOFs) are used as adsorbents for low temperature cooling applications, in particular MIL-101Cr MOF, which has shown superior performance with uptake value of 1.2 kgref/kgads.
87 citations
TL;DR: A simple radiochemical procedure is described, in which incubation mixtures are applied to small disposable columns of Bio-Sil A (silica gel) resin and eluted with two different solvent mixtures to achieve a separation of unmetabolized substrates from prostaglandin products.
87 citations
TL;DR: In this paper, the authors investigated the effectiveness of adding a polymer blend of carboxymethyl cellulose (CMC) and silica gel to avoid phase segregation, and silver nanoparticles (AgNPs) as nucleating agent.
87 citations
TL;DR: Intercomparison of HCHO concentrations measured simultaneously using 2,4-nitrophenylhydrazine (DNPH)-coated silica gel Sep-Pak cartridges and tunable diode laser absorption spectroscopy (TDLAS) showed that when O 3 was removed, the H CHO concentrations obtained by the DNPH and TDLAS techniques were not significantly different.
Abstract: The DNPH-coated cartridge technique for measuring carbonyl compounds was evaluated using large volume silica gel cartridges and Sep-Pak C 18 silica gel and silica gel cartridges. The silica gel Sep-Pak cartridge was found to be the best of the three types evaluated for determinations in relatively clean ambient air. At concentrations of HCHO and O 3 typical of clean ambient air (2 and 40 ppb, respectively), it was determined that for all three cartridge types there was a significant negative interference from O 3 . Determined acetaldehyde concentrations were also low in the presence of this concentration of O 3 , but acetone was not affected. This technique can only be used to accurately measure carbonyl compounds if O 3 is first removed. NO 2 and NO at concentrations typical of both rural and urban ambient air are not interferences when sampling with these cartridges. Use of both Kl traps and titration with NO was found to effectively remove O 3 while allowing quantitative determination of HCHO. Intercomparison of HCHO concentrations measured simultaneously using 2,4-nitrophenylhydrazine (DNPH)-coated silica gel Sep-Pak cartridges and tunable diode laser absorption spectroscopy (TDLAS) showed that when O 3 was removed (unlike the case where O 3 was present) by Kl traps or NO titration, the HCHO concentrations obtained by the DNPH and TDLAS techniques were not significantly different.
87 citations