FIELD: chemistry.
SUBSTANCE: thymoquinone is extracted from a sample, and the extract is filtered and centrifuged. Analysis is performed by capillary electrophoresis in a quartz capillary with an effective length of 0.5 m and an inner diameter of 75 mcm. Analysis is performed using an aqueous electrolyte containing 0.4% boric acid, 0.05% sodium tetraborate, 6% isopropanol and 6% ethanol, with a positive voltage polarity. Analysis results are recorded using a photometric detector at wavelength 254 nm.
EFFECT: invention simplifies the sample preparation process when performing express analysis.
2 dwg, 1 tbl, 4 ex
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