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The purification procedure entailed ethyl acetate extract, silicagel column, and thin layer chromatography.
2
The extracts were then further purified with SPE silicagel tubes deactivated with trimethylamine.
3
The dimer fraction was separated by size-exclusion chromatography (SEC) after pre-fractionation on silicagel.
4
After removing the template by calcination, porous dehydrated silicagel nanoshells of uniform size were obtained.
5
Both extracts were subjected to silicagel column chromatography for isolation of main constituents, followed by purification in sephadex.
6
Nitenpyram and pyrasulfotole showed low recoveries for all the samples tested, probably due to low recoveries from silicagel column.
7
In this study, destruxin B was extracted and purified by ion-exchange chromatography, silicagel chromatography, and semipreparative high-performance liquid chromatography.
8
HPTLC silicagel G 60 F 254 precoated glass plates were used as the stationary phase.
9
Methods: The constituents were isolated and purified by silicagel and polyamide, their chemical structures were identified by physicochemcial properties and spectral methods.
10
The simultaneous analysis of 6-SHO and 6-GIN was carried out via RP-18 silicagel 60 F254S HPTLC plates.
11
To investigate the bioactivity of enzymes entrapped within stable silicagel-derived microchannels, the suggested scheme was employed to the construction of immobilized enzyme microreactor-on-a-chip.
12
Method: The chemical constituents were isolated and repeatedly purified by silicagel chromatography and the structures were elucidated by the NMR spectra and physicochemical properties.
13
In the ion-imprinting process, thorium(IV) was complexed with the carboxyl groups, then was imprinted in the polymers grafted to the silicagel surface.
14
Method: The compounds were extracted by 95% alcohol and isolated by column chromatography on silicagel, SephedaxLH-20 and ODS.
15
Photo: supplied Each handbag had two to five silicagel packs, with approximately 3.6 grams of methamphetamine hidden in most packs.
16
Amino polystyrene beads were used as templates, and an 8 to 10 nm thick silicagel coating was formed by the sol-gel reaction.