Contactless Conductivity Detector for Microchip Capillary Electrophoresis: Fast Measurements of Explosives and Explosive Residues
نویسندگان
چکیده
منابع مشابه
Contactless conductivity detector for microchip capillary electrophoresis.
A microfabricated electrophoresis chip with an integrated contactless conductivity detection system is described. The new contactless conductivity microchip detector is based on placing two planar sensing aluminum film electrodes on the outer side of a poly(methyl methacrylate) (PMMA) microchip (without contacting the solution) and measuring the impedance of the solution in the separation chann...
متن کاملA chip-based capillary electrophoresis-contactless conductivity microsystem for fast measurements of low-explosive ionic components.
A miniaturized analytical system for separating and detecting inorganic explosive residues, based on the coupling of a micromachined capillary electrophoresis (CE) chip with a contactless conductivity detector is described. The low electroosmotic flow (EOF) of the poly(methylmethacrylate) (PMMA) chip material facilitates the rapid switching between analyses of cations and anions using the same ...
متن کاملHigh-voltage capacitively coupled contactless conductivity detection for microchip capillary electrophoresis.
Contactless conductivity detection was carried out on a planar electrophoresis device by capacitive coupling using an ac excitation voltage of 500 V(p-p) and a frequency of 100 kHz. It was possible to carry out detection in this way through a cover plate of 1 mm thickness. Better sensitivity is obtained, however, by placing the electrodes into troughs that allow tighter coupling to the separati...
متن کاملAnalysis of arecoline in Semen Arecae decoction pieces by microchip capillary electrophoresis with contactless conductivity detection
A new method for the determination of arecoline in Semen Arecae decoction pieces by microchip capillary electrophoresis with contactless conductivity detection (MCE-CCD) was proposed. The effects of various electrophoretic operating parameters on the analysis of arecoline were studied. Under the optimal conditions, arecoline was rapidly separated and detected in 1 min with good linearity over t...
متن کاملCharacterisation of Crevice and Pit Solution Chemistries Using Capillary Electrophoresis with Contactless Conductivity Detector
The ability to predict structural degradation in-service is often limited by a lack of understanding of the evolving chemical species occurring within a range of different microenvironments associated with corrosion sites. Capillary electrophoresis (CE) is capable of analysing nanolitre solution volumes with widely disparate concentrations of ionic species, thereby producing accurate and reliab...
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ژورنال
عنوان ژورنال: JALA: Journal of the Association for Laboratory Automation
سال: 2002
ISSN: 1535-5535
DOI: 10.1016/s1535-5535-04-00206-0