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Electrophoretic separations with polyether ether ketone capillaries and capacitively coupled contactless conductivity detection.

Jatisai Tanyanyiwa·Sandro Leuthardt·Peter C Hauser
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Abstract

Polyether ether ketone (PEEK) capillaries were found to be compatible with capacitively-coupled contactless-conductivity detection (C4D). Detection limits in the order of 10(-7) M were obtained with C4D employing a high excitation voltage (HV-C4D) for inorganic cations and anions. The organic polymer capillary shows a relatively low electroosmotic flow of 2.6 x 10(-4) cm2 V(-1) s(-1). Thus inorganic anions and slower organic anions can be separated with a PEEK capillary in a single run without flow modifier. This feature also enables the analysis of both, cations and (fast and slow) anions, in a sample in two subsequent runs just by reversing the polarity or in a single run if dual opposite end injection is employed.

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ElectrochemistryElectrophoresis, CapillaryKetonesSensitivity and SpecificityJournal ArticleResearch Support, Non-U.S. Gov't

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Jatisai Tanyanyiwa, Sandro Leuthardt, Peter C Hauser. 2002-11-29. Electrophoretic separations with polyether ether ketone capillaries and capacitively coupled contactless conductivity detection.. https://doi.org/10.1016/s0021-9673(02)01425-5

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