Výsledky vyhledávání

Effects of ion pairing on the capillary electrophoretic separation and ultraviolet-absorption detection of quaternary ammonium cations using meso -octamethylcalix[4]pyrrole as the background electrolyte additive

Autor: Fu Chen, Mina Luo, Huaqiao Ma

Publikováno v: Journal of Separation Science. 38:1225-1231

Five quaternary ammonium cations, including tetramethylammonium, tetraethylammonium, hexadecyltrimethylammonium, benzyltrimethylammonium, and 1-butyl-3-methylimidazolium, have been separated by capillary electrophoresis. A direct ultraviolet method h

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::808defad40478b9da59873aa14859689
https://doi.org/10.1002/jssc.201401208

Zobrazit plný text záznamu

Semipreparative Enantiomer Separation of Propranolol Hydrochloride by High-Performance Liquid Chromatography Using Cellulose tris(3,5-Dimethylphenylcarbamate) Chiral Stationary Phase

Autor: Sheng xiang Jiang, Huaqiao Ma, Xia Liu, Limei Chen

Publikováno v: Journal of Chromatographic Science. 46:767-771

In this paper, we describe the direct semipreparative resolution of racemic (rac)-propranolol hydrochloride by high-performance liquid chromatography using cellulose tris(3,5-dimethylphenylcarbamate) as chiral stationary phase and mobile phase system

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a4f59878827dda96fa8e5561c547722a
https://doi.org/10.1093/chromsci/46.9.767

Zobrazit plný text záznamu

HPLC analysis of flavonoids inLamiophlomis rotata

Autor: Mina Luo, Xia Liu, Huaqiao Ma, Shengxiang Jiang

Publikováno v: Acta Chromatographica. 20:247-257

Summary A simple and precise high-performance liquid chromatographic (HPLC) method has been developed for analysis of flavonoids in Lamiophlomis rotata. HPLC conditions were optimized. Baseline separation was achieved by use of a binary gradient prep

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::056cc67fee2f89aa2c271f96f297a3aa
https://doi.org/10.1556/achrom.20.2008.2.9

Zobrazit plný text záznamu

Cation effects in the separation of calix[4]pyrroles by nonaqueous capillary electrophoresis with tetraalkylammonium chloride salts as background electrolytes

Autor: Mina Luo, Shengxiang Jiang, Huaqiao Ma, Xia Liu, Shijun Shao

Publikováno v: Journal of Chromatography A. 1192:180-186

The migration behavior of three calix[4]pyrroles (C4Ps) in acetonitrile (ACN) and in the mixtures of ACN/ethanol (EtOH) (95:5; v/v)with tetraalkylammonium chloride as background electrolyte (BGE) was studied. Electroosmotic flow (EOF) mobilities and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8b63fd91c0bf1bad6512e9396896e0db
https://doi.org/10.1016/j.chroma.2008.03.050

Zobrazit plný text záznamu

Hydrogen-bond effect and ion-pair association in the separation of neutral calix[4]pyrroles by nonaqueous capillary electrophoresis

Autor: Xia Liu, Shijun Shao, Shengxiang Jiang, Huaqiao Ma, Mina Luo

Publikováno v: Journal of Chromatography A. 1188:57-60

A study on the migration behavior of four neutral macrocyclic compounds calix[4]pyrroles (C4Ps) by nonaqueous capillary electrophoresis (NACE) with tetrabutylammonium halide salts as background electrolyte (BGE) is described. Systematic studies were

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4bfae9d48d394a5c50a097de68293f9e
https://doi.org/10.1016/j.chroma.2007.09.087

Zobrazit plný text záznamu

Effects of ion pairing on the capillary electrophoretic separation and ultraviolet-absorption detection of quaternary ammonium cations using meso-octamethylcalix[4]pyrrole as the background electrolyte additive

Autor: Mina, Luo, Huaqiao, Ma, Fu, Chen

Publikováno v: Journal of separation science. 38(7)

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::29813f3fbb110ef17f034a43bb0146ff
https://pubmed.ncbi.nlm.nih.gov/25641935

Zobrazit plný text záznamu

Fingerprint quality control of Angelica sinensis (Oliv.) Diels by high-performance liquid chromatography coupled with discriminant analysis

Autor: Shuai Wang, Shengxiang Jiang, Cheng-Dong Qiao, Shijun Shao, Huaqiao Ma, Ya-Jie Sun

Publikováno v: Talanta. 72:434-436

High-performance liquid chromatography (HPLC) was employed in the fingerprint analysis of Angelica sinensis (Oliv.) Diels. A chromatographic profile of A. sinensis (Oliv.) Diels from the Dingxi District of Gansu province, China, was established as th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::05b2bffd14d22bfa991667ea85ad5e4e
https://doi.org/10.1016/j.talanta.2006.11.006

Zobrazit plný text záznamu

Separation and determination of flavonoids in Lamiophlomis rotata by capillary electrophoresis using borate as electrolyte

Autor: Shengxiang Jiang, Liang Zhao, Mina Luo, Xia Liu, Huawei Lu, Huaqiao Ma

Publikováno v: Journal of pharmaceutical and biomedical analysis. 44(4)

A capillary electrophoresis method was developed for the simultaneous determination of five flavonoids such as luteolin-7- O -glucoside, isorhamnetin, apigenin, luteolin and quercetin in Lamiophlomis rotata (Benth.) Kudo. Optimal conditions were obta

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::157595a06d180241aad5605da6de113b
https://pubmed.ncbi.nlm.nih.gov/17512689

Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání