Determination of Histamine by Capillary Zone Electrophoresis with Amperometric Detection.
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منابع مشابه
Determination of histamine by capillary zone electrophoresis with amperometric detection.
Capillary zone electrophoresis was employed for the determination of histamine using end-column amperometric detection with a carbon fiber microelectrode, at a constant potential. The optimum conditions of separation and detection were 10 mmol/L phosphate buffer, pH 5.6 for the buffer solution, 15 kV for the separation voltage, and 1.35 V (versus SCE) for the detection potential. The linear ran...
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Caplllary zone electrophoresis (CZE) was employed to separate sugars accordlng to their electrophoretic moMlitks In strong alkallne clolutlons (pH ca. 13). Saccharide zones were monltored electrochemlcaliy udng amperometrlc detectlon at a constant potentlal, 0.6 V (vs Ag/AgCI), with a cyllndrlcal copper wire electrode (25 pm In diameter). The Cu-wire microelectrode In strong badc solutions had ...
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HASSAN A ALHAZMI, HAFIZ A MAKEEN, SAMI EL DEEB Department of Pharmaceutical Chemistry, College of pharmacy, Jazan University, P.O. Box 114, Jazan 45142, Saudi Arabia. Department of Clinical Pharmacy, College of pharmacy, Jazan University, P.O. Box 114, Jazan 45142, Saudi Arabia. Institute of Pharmacy, Freie Universität Berlin, Berlin, Germany Department of Pharmaceutical Chemistry, Al-Azhar Uni...
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An improved capillary electrophoresis assay for histamine in crude extracts was developed and used to determine histamine levels in a selection of tomato fruits and pastes. Performance in terms of reproducibility and sensitivity was optimized by use of a high sensitivity detector flow cell, sodium hydroxide rinses, and a voltage gradient. The method was linear down to 0.2 microgram/mL (signal-t...
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A test mixture of five phytohormones [naphthaleneacetic acid (NAA), naphthoxyacetic acid (NOA), indoleacetic acid (IAA), indolebutyric acid (IBA), and indolepropionic acid (IPA)] was investigated. These compounds were cleanly separated with good resolution by capillary zone electrophoresis with a UV diode array detector using 20 mM sodium phosphate buffer (pH 7.25). The lowest detection limit w...
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ژورنال
عنوان ژورنال: Analytical Sciences
سال: 2002
ISSN: 0910-6340,1348-2246
DOI: 10.2116/analsci.18.1117