Abstract
In order to study photodegradation of vitamin K1, gas chromatographic determination of residual vitamin K1 in photodegradation products under aerobic or anaerobic condition was investigated, Quantitative analysis was carried out on the column packed with acidwashed and silanized Chromosorb W coated with 3% Silicone OV-1 at column temperature of 260°, and n-triacontane was used as an internal standard. It was possible to determine vitamin K1 without interference of photodegradation products under aerobic or anaerobic condition by the gas chromatography.