A high-performance liquid chromatographic method was developed for separation of the furochromone fraction and for determination of visnagin in Ammi visnaga hairy root cultures. Lyophilized samples were extracted with chloroform:methanol (1:1, v/v) and purified on solid-phase extraction cartridges.
Determination of sulfonamides in livers using matrix solid-phase dispersion extraction high-performance liquid chromatography
β Scribed by Yupu Zhang; Xu Xu; Xiao Qi; Wenquan Gao; Shuo Sun; Xiaotian Li; Chengfei Jiang; Aimin Yu; Hanqi Zhang; Yong Yu
- Publisher
- John Wiley and Sons
- Year
- 2011
- Tongue
- English
- Weight
- 310 KB
- Volume
- 35
- Category
- Article
- ISSN
- 1615-9306
No coin nor oath required. For personal study only.
β¦ Synopsis
Abstract
The matrix solidβphase dispersion (MSPD) was applied for extracting seven sulfonamides (SAs) in liver samples. The separation and determination were carried out by highβperformance liquid chromatography. The analytes were derivated with fluorescamine and detected with fluorescence detector. The types of dispersion adsorbents for MSPD were examined and the highest recovery was obtained when the diatomaceous earth was used as the dispersion adsorbent and the mass ratio of dispersion adsorbent to sample was 3:1. The acetone was used as the elution solvent. Under the optimal conditions, the linear range for determining the SAs in liver samples was 5.0β1000.0βng/g. The porcine, chicken and cattle liver samples were analyzed and the average recoveries of seven SAs were higher than 84.6%.
π SIMILAR VOLUMES
## Abstract In this study, silicaβcoated magnetic nanoparticles (Fe~3~O~4~/SiO~2~ NPs) modified by cetyltrimethylammonium bromide (CTAB) were synthesized. They were successfully applied for extraction of xanthohumol in beer based on magnetic mixed hemimicelles solidβphase extraction (MMHSPE) couple
A method for the determination of lorazepam in rat brain is described using liquidhiquid and solid-phase extraction, followed by high performance liquid chromatography. After addition of chlordiazepoxide as the internal standard, 100 mg brain tissue was homogenized and incubated with alkaline protea