𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Modified methods for off- and on-line determination of electroosmosis in capillary electrophoretic separations

✍ Scribed by A.A.A.M. van de Goor; B.J. Wanders; F.M. Everaerts

Publisher
Elsevier Science
Year
1989
Tongue
English
Weight
596 KB
Volume
470
Category
Article
ISSN
1873-3778

No coin nor oath required. For personal study only.

✦ Synopsis

Two modified methods for measuring the i-potential and electroosmotic flow in capillaries for electrophoretic or electrochromatographic separations are discussed. Streaming potential measurements with computer control and data acquisition can be used off-line for rapid screening of the behaviour of capillaries. To test the equipment, the variation of the c-potential with pH was performed and the characteristics of the system are discussed. Weighing measurements were performed on-line. The variation of the measurements with increased electric field strength are shown. For both methods the reproducibility and the accuracy are discussed.

📜 SIMILAR VOLUMES

Development of a simple high-performance
Development of a simple high-performance capillary electrophoretic method with on-line mode in capillary derivatization for the determination of spermidine
✍ Shigeyuki Oguri; Asako Tsukamoto; Atuko Yura; Yamazaki Miho 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 514 KB

## Abstract A new high‐performance capillary electrophoretic (HPCE) method with an on‐line mode in‐capillary derivatization (ICD) procedure for determinations of some amines using 20 mmol/L sodium dodecyl sulfate (SDS) ‐ 2 mmol/L __o__‐phthalaldehyde (OPA) ‐ 2 mmol/L __N__‐acetylcysteine (NAC) ‐ 20

Methods for on-line determination and co
Methods for on-line determination and control of electroendosmosis in capillary electrochromatography and electrophoresis
✍ B.J. Wanders; A.A.A.M. van de Goor; F.M. Everaerts 📂 Article 📅 1989 🏛 Elsevier Science 🌐 English ⚖ 270 KB

Systems are described for the on-line determination and control of electroendosmosis that offer several advantages for both electrochromatographic and electrophoretic separations. For electrochromatographic separations the control system can be used to stabilize the electroendosmosis and obtain a be

Sensitivity enhancement by on-line preco
Sensitivity enhancement by on-line preconcentration and in-capillary derivatization for the electrophoretic determination of amino acids
✍ Rosa M. Latorre; Javier Saurina; Santiago Hernández-Cassou 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 English ⚖ 488 KB 👁 2 views

## Sensitivity enhancement by on-line preconcentration and in-capillary derivatization for the electrophoretic determination of amino acids This study describes an application of on-line preconcentration by large-volume stacking in combination with in-capillary derivatization for enhancing spectro