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Titolo:
Separation of stilbenes by capillary electrophoresis and high-performance liquid chromatography
Autore:
Wang, SP; Huang, SP;
Indirizzi:
Providence Univ, Dept Appl Chem, Shalu 433, Taichung Hsien, Taiwan Providence Univ Shalu Taichung Hsien Taiwan 433 3, Taichung Hsien, Taiwan
Titolo Testata:
ELECTROPHORESIS
fascicolo: 11, volume: 22, anno: 2001,
pagine: 2222 - 2230
SICI:
0173-0835(200107)22:11<2222:SOSBCE>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
FLUORESCENT WHITENING AGENTS; SURFACE WATERS; DETERGENTS;
Keywords:
stilbenes; fluorescence whitening agent; capillary electrophoresis; high-performance liquid chromatography; ion-pair chromatography; detergents;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
17
Recensione:
Indirizzi per estratti:
Indirizzo: Wang, SP Providence Univ, Dept Appl Chem, 200 Chungchi Rd, Shalu 433, Taichung Hsien, Taiwan Providence Univ 200 Chungchi Rd Shalu Taichung Hsien Taiwan 433 n
Citazione:
S.P. Wang e S.P. Huang, "Separation of stilbenes by capillary electrophoresis and high-performance liquid chromatography", ELECTROPHOR, 22(11), 2001, pp. 2222-2230

Abstract

Stilbenes, fluorescence whitening agents (FWAs), are usually added to cleaning agents in household and in industry. Capillary electrophoresis (CE) was often applied to separate various compounds simultaneously for its multinomial advantages. In this paper, we established analytical methods of six diaminostilbenes with CE and ion-pair chromatography (IPC). The optimum mobile phase for IPC was 11.78 mM tetrabutylammonium hydrogen sulfate (TBA) aqueous and acetonitrile. An IPC method has been developed for simple and direct separation for diaminostilbenes, anionic substances, with TBA as ion-pair reagent. Satisfactory linear ranges (7.0 x 10(-3) similar to 3.0 x 10 mug/mL), correlation coefficients (0.9992-0.9999), and detection limits (6-13 ng/mL) were obtained. Separations were also performed by capillary zone electrophoresis (CZE) using a buffer consisting of Tris (pH 10.1), n-tetradecyltrimethylammonium bromide (TTAB) and acetonitrile. A linear range of 5.0 x10(-1)-4.0 x 10 mug/mL, correlation coefficients between 0.9975 and 0.9998, and detection limits between 337 and 446 ng/mL were obtained. In particular, the separation of a pair of similar compounds (mass difference of 2) was achieved by addition of TTAB. The optimum analytical methods of CE and high-performance liquid chromatography (HPLC) were applied to commercial household with direct analysis and standard addition. No significant bias were shown between them by t-test at 95% confidence level.

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Documento generato il 01/04/20 alle ore 10:18:27