The invention relates to the field of
analytical chemistry and
food safety, and provides a
high performance liquid chromatography detection method for residual quantity of multiple
ultraviolet absorbents in
cosmetics. A cosmetic sample of 0.4g is weighed and placed in a plastic
centrifuge tube of 50 ml,
sample extraction liquid of 20ml is added, after the cosmetic sample of 0.4g and the
sample extraction liquid of 20ml are mixed for 2 minutes in a vortex mode, sonic oscillation extraction is carried out for 20 minutes, 8000
revolutions per minute centrifugation is carried out for 10 minutes and, and supernate is to be purified; and after test solutions sequentially pass through
microfiltration membranes of 0.45
micrometer and 0.20
micrometer, a high performance liquid chromatograph is adopted to carry out qualitative determination and
quantitative assay. The detection method has the advantages of being simple, fast, accurate, efficient, and the like, and can detect 12
ultraviolet absorbents at the same time. Technical indexes of detection minimum, the
recovery rate, the
degree of precision, and the like all meet relevant demands for
ultraviolet absorbent detection in sun block
cosmetics at home and abroad. The method is suitable for detection and monitoring of the ultraviolet absorbents in the sun block
cosmetics, and has great significance on promoting of import and export trade of cosmetics of our country, ensuring of safety of the cosmetics, and guarantee of
human body health.