2007
DOI: 10.1002/elps.200600493
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Electrophoretic separation of environmentally important phenolic compounds using montomorillonite‐coated fused‐silica capillaries

Abstract: This paper reports a simple procedure for coating fused-silica capillaries with poly(diallyldimethyl ammonium chloride) and montmorillonite. The coated capillaries were characterized by performing EOF measurements as a function of buffer pH, number of layers of coating, and number of runs (stability). The coated capillaries showed a highly stable mu(EOF) (run-to-run RSD less than 1.5%, n = 20), allowing continuous use for several days without conditioning. The coated capillaries were then used for the effectiv… Show more

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Cited by 17 publications
(11 citation statements)
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“…CE remains an important area of investigation for the analysis of these pollutants [34,36,38,39,42,46,61,68,69,72,82,87]. As outlined in Section 3, several studies using CE to analyze phenolic compounds in environmental matrices focused primarily on the improvement of sensitivity and sample clean-up techniques [34,68,69,72].…”
Section: Phenolsmentioning
confidence: 99%
“…CE remains an important area of investigation for the analysis of these pollutants [34,36,38,39,42,46,61,68,69,72,82,87]. As outlined in Section 3, several studies using CE to analyze phenolic compounds in environmental matrices focused primarily on the improvement of sensitivity and sample clean-up techniques [34,68,69,72].…”
Section: Phenolsmentioning
confidence: 99%
“…Considering this, our group developed a simple and inexpensive method to coat silica capillaries with montmorillonite , a natural clay [12]. In addition, we studied the adsorption of alkyl surfactants with different chain lengths and head groups to poly(dimethylsiloxane) (PDMS), one of the most commonly used materials to fabricate microchip-CE devices.…”
Section: Capillary Electrophoresis Microchip-ce and Electrochemicalmentioning
confidence: 99%
“…For that reason, a variety of techniques have been used for delivery and control of liquids in CE-sensors and other microfluidic devices. Among others [30, 188191], a description of the principles and some applications of electrophoretic, electro-osmotic, opto-acoustic, optically-driven, electrochemical, and gravity-driven pumps has been recently published [25]. Because they do not require moving parts (motors, actuators, or check valves) and can be controlled with the same instrumentation used to power separation, most pumps used in CE and μchip-CE devices are electro-osmotically-driven.…”
Section: - Instrumentationmentioning
confidence: 99%