Quick determination of trehalose in cosmetics by ion chromatography
An analysis method for determining trehalose in cosmetics based on high performance anion exchange chromatography with pulsed amperage detection ( HPAE - PAD) was established. Various sample pretreatment methods were adopted. The samples were analyzed by ion chromatography with METROSEP CARB 1 column (150 mm × 4. 0 mm). NaOH solution of 200. 0 mmol ? L-1 was used as the mobile phase for elution. Analysis of a sample can be completed within 7 min. The detection limit of trehalose was 0. 02 mg ? L-1. The RSD of peak area achieves 0. 17% , and the RSD of retention time achieves 0. 28%. Glycerol and propylene glycol which can be easily found in cosmetics have no interference on the determination of the trehalose. The average recoveries achieves 95. 2% -99. 2%.
国家科技期刊平台
NSTL
万方数据
维普
