Three Vetiveria zizanoides oil samples rejected by foreign firms were studied in comparison with an authentic oil sample from Jinhua by GC_MS with both polar and non_polar columns.
采用ＧＣ－ＭＳ方法分别在极性柱和非极性柱上对３种国外拒收的岩兰草油样品与未掺伪样品进行了比较，确定了主要的掺伪物质为邻苯二甲酸二乙酯，用面积归一化法测得其掺伪物质的含量。
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