摘要：A high performance liquid chromatographic (HPLC) method was developed for determining propyl gallate (PG) in cosmetic lotions and creams. The sample is extracted with ethyl acetate, and the extract is cleaned up on a florisil column. PG in the purified extract is determined by reverse phase HPLC on a octadecylsilated silica column using a mobile phase of acetonitrile-water with 5% acetic acid, UV detector (275 nm) for the detection. Recoveries of PG from cosmetic samples spiked at 0.005 and 0.001% leveles were 96.2-98.0%, and the coefficients of variation were within 2.71-3.81%.
