Determination of aldehydes in water samples by capillary electrophoresis after derivatization with hydrazino benzene sulfonic acid

1998 ◽  
Vol 48 (11-12) ◽  
pp. 807-810 ◽  
Author(s):  
A. Asthana ◽  
D. Bose ◽  
S. Kulshrestha ◽  
S. P. Pathak ◽  
S. K. Sanghi ◽  
...  
Keyword(s):  
Capillary Electrophoresis ◽  
Water Samples ◽  
Sulfonic Acid ◽  
Benzene Sulfonic Acid

Sensitive Determination of Bromate in Water Samples by Capillary Electrophoresis Coupled with Electromembrane Extraction

2015 ◽  
Vol 9 (2) ◽  
pp. 393-400 ◽  
Author(s):  
Xiaoli Zhang ◽  
Lin Guo ◽  
Dongxue Zhang ◽  
Xinxin Ge ◽  
Jiannong Ye ◽  
...  
Keyword(s):  
Capillary Electrophoresis ◽  
Water Samples ◽  
Electromembrane Extraction ◽  
Sensitive Determination

Application of capillary electrophoresis for the determination of dissolved gases in water samples

1997 ◽  
Vol 356 (1) ◽  
pp. 1-6 ◽  
Author(s):  
Saeid Razee ◽  
Atsushi Tamura ◽  
Samy Emara ◽  
Tsutomu Masujima
Keyword(s):  
Capillary Electrophoresis ◽  
Water Samples ◽  
Dissolved Gases

Determination of sulfonamide residues in water samples by in-line solid-phase extraction-capillary electrophoresis

2009 ◽  
Vol 1216 (15) ◽  
pp. 3372-3379 ◽  
Author(s):  
Francisco J. Lara ◽  
Ana M. García-Campaña ◽  
Christian Neusüss ◽  
Fermín Alés-Barrero
Keyword(s):  
Capillary Electrophoresis ◽  
Solid Phase Extraction ◽  
Water Samples ◽  
Solid Phase ◽  
Phase Extraction ◽  
Sulfonamide Residues

Designed multifunctional ionic liquids–magnetic graphene nanocomposites as the adsorbent of MSPE for the determination of preservatives

2018 ◽  
Vol 10 (12) ◽  
pp. 1420-1430 ◽  
Author(s):  
Shurui Cao ◽  
Yaling Chen ◽  
Lei Zhang ◽  
Cunxian Xi ◽  
Xianliang Li ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Structural Design ◽  
Sulfonic Acid ◽  
Benzene Sulfonic Acid ◽  
Graphene Nanocomposites ◽  
Naphthalene Sulfonic Acid ◽  
Magnetic Graphene

A new structural design for fabricating four types of ionic liquids was successfully adapted, which was based on changing the anion of 1-vinyl-3-octylimidazolium bromide (VOIm+Br−) with benzene sulfonic acid (BenSO3−), 2-naphthalene sulfonic acid (NapSO3−), 1-anthraquinonesulfonic acid (AQSO3−) and 1,2-naphthoquinone-4-sulfonic acid (NQSO3−).

scholarly journals Indirect detection of 5-hydroxytryptamine and tyramine by using tris(2,2’-bipyridyl)ruthenium-graphene modified electrode coupled with capillary electrophoresis

2019 ◽  
Vol 10 (4) ◽  
pp. 336-344
Author(s):  
Zi Wei Zhao ◽  
Fan Lin Li ◽  
Ming Su
Keyword(s):  
Capillary Electrophoresis ◽  
Sulfonic Acid ◽  
Electrostatic Interactions ◽  
Limit Of Detection ◽  
Indirect Detection ◽  
Plasma Samples ◽  
Functionalized Graphene ◽  
Quenching Mechanism ◽  
Highly Sensitive

A highly sensitive and stable solid-state electrochemiluminescence (ECL) sensor was developed based on tris(2,2’-bipyridyl)ruthenium(II) (Ru(bpy)32+) integrating with 2,2-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) functionalized graphene. Ru(bpy)32+ is incorporated with the ABTS functionalized graphene based on not only the π-π stacking but also electrostatic interactions. Coupled with capillary electrophoresis (CE), this ECL sensor was used to detect tyramine and 5-hydroxytryptamine (5-HT) based on their quenching effects for the Ru(bpy)32+/tripropylamine (TPA) system. The quenching mechanism was illustrated and the conditions for CE separation and ECL detection were optimized. Based on an S/N = 3, the limit of detection (LOD) for tyramine and 5-HT were 0.1 μM and 0.02 μM, respectively. The applicability of the proposed method was further illustrated in the determination of tyramine and 5-HT in human plasma samples from small intestine carcinoid patients.

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