Determination of carphedon in human urine by solid-phase microextraction using capillary gas chromatography with nitrogen-phosphorus detection
Carphedon is a phenyl derivative of nootropil and is effective in increasing physical endurance and cold resistance, and is used for amnesia treatment. Carphedon was extracted from human urine samples by solid-phase microextraction with a 65 microns carbowax-divinylbenzene-coated fiber. This analysis was performed by using capillary gas chromatography with nitrogen-phosphorus detection and optimized at pH 9.6, 30% NaCl, immersion time 10 min and desorption in the GC injector at 250 degrees C for 3 min. The regression equation for carphedon showed good linearity in the range from 0.1 to 10 micrograms ml-1 for human urine samples. The limit of detection was 0.01 microgram ml-1. The developed method is more sensitive and simpler in sample preparation than liquid-liquid extraction and can be applied to doping analysis for stimulants.
Scientific Studies & Papers
-
{{#owner}}
-
{{#url}}
{{#avatarSrc}}
{{/avatarSrc}} {{^avatarSrc}} {{& avatar}} {{/avatarSrc}}{{name}} {{/url}} {{^url}} {{#avatar}} {{& avatar}} {{/avatar}} {{name}} {{/url}} - {{/owner}} {{#created}}
- {{created}} {{/created}}