土壤样品经丙酮与正己烷以体积比1∶2组成的混合液提取，采用PSA/Silica复合填料玻璃柱净化，收集洗脱液，洗脱液旋蒸近干，加入正己烷，采用气相色谱-串联质谱法测定稀释液中16种邻苯二甲酸酯（PAEs）的含量。在气相色谱分离中采用DB-5MS石英毛细管色谱柱，在串联质谱分析中采用选择离子监测模式。测定2种邻苯二甲酸酯单酯代谢物（MPEs）时，洗脱液旋蒸近干后，在14%（质量分数）三氟化硼-甲醇溶液中于60℃衍生30 min。16种PAEs的线性范围均为0.02~0.80 mg·L^-1，检出限（3S/N）为1.357 μg·kg^-1；2种MPEs的线性范围均为0.05~1.00 mg·L^-1，检出限（3S/N）为0.217 μg·kg^-1。以空白土壤样品为基体进行加标回收试验，所得回收率为71.1%~105%，测定值的相对标准偏差（n=5）为0.10%~14%。

The soil sample was extracted with the mixture of acetone and n-hexane (volume ratio of 1∶2). After purification with PSA/Silica composite packing glass column, the eluent was collected, and then evaporated to near dryness by rotary. After adding n-hexane, GC-MS/MS was applied to the determination of 16 phthalate esters (PAEs) in the diluent. The DB-5MS quartz capillary chromatographic column was used for GC separation and the selected ion monitoring mode was adopted in MS/MS determination. For determination of 2 monoester metabolites of phthalate esters (MPEs), the eluent was evaporated to near dryness by rotary,and then derivatized for 30 min with mixture of boron trifluoride (14%, mass fraction) and methanol at 60 ℃. Linearity ranges of the 16 PAEs were found in the same range of 0.02-0.80 mg·L^-1 with detection limits (3S/N) of 1.357 μg·kg^-1. Linearity ranges of the 2 MPEs were found in the same range of 0.05-1.00 mg·L^-1 with detection limits (3S/N) in the range of 0.217 μg·kg^-1. On the base of blank soil sample, test for recovery was made by standard addition method; values of recovery found were in the range of 71.1%-105%, with RSDs (n=5) of determined values in the range of 0.10%-14%.