采用顶空-气相色谱-串联质谱法测定水中苯甲醚的含量。取10 mL水样和氯化钠3 g加入于顶空瓶中,于70 ℃平衡15 min,搅拌速率为95 r·min-1。气相色谱中采用Rxi-5Sil毛细管色谱柱,质谱中采用电子轰击离子源和多反应监测模式。苯甲醚的质量浓度在0.005~0.1 μg·L-1范围内呈线性,检出限(3S/N)为0.001 μg·L-1,加标回收率在73.7%~92.2%之间,测定值的相对标准偏差(n=6)为3.7%~8.2%。

Headspace-GC-MS/MS was applied to the determination of anisole in water. 3 g of NaCl and 10 mL of water sample were placed into head-space flask, and the mixture was equilibrated at 70 ℃ for 15 min while stirred, at a rate of 95 r·min-1. Rxi-5Sil capillary column was used for separation in GC. EI and MRM were adopted in MS. The linearity range of anisole was between 0.005-0.1 μg·L-1 with detection limit (3S/N) of 0.001 μg·L-1. Values of recovery obtained by standard addition method were in the range of 73.7%-92.2% and RSDs (n=6) were in the range of 3.7%-8.2%.