简要描述了四种萃取净化方法，以及定性定量检验方法的特点、检测水平和应用。
Four methods of extraction, qualities of qualitative and quantitative analysis, detecting level and applications have been outlined.
研究了采用固相萃取净化，高效液相色谱-串联质谱（HPLC-MS/MS）法测定牛肝中氯舒隆残留量的方法。
A method was developed to determine clorsulon residue in ox liver by high performance liquid chromatography-tandem mass spectrometry(HPLC-MS/MS).
十大功劳、金盏花、积雪草和百里香萃取净化肌肤并缩紧毛孔，同时透明质酸补充水份、芦荟镇静肌肤，帮助改善干燥和疼痛。
Mahonia, calendula, gotu kola and thyme extracts cleanse the skin and tighten pores, whilst hydrating hyaluronic acid and soothing aloe vera help combat dryness and irritation.
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