【摘要】 提出了用气相色谱-质谱法测定纺织品中N-乙基全氟辛烷磺酰胺的方法。试样经甲醇超声提取后,在旋转蒸发仪中浓缩至5 mL,通过DB-5MS色谱柱分离,采用选择离子监测模式检测,定性离子为m/z69,108,131,169,448,定量离子为m/z108。N-乙基全氟辛烷磺酰胺的质量浓度在0.2~20.0 mg.L-1范围内与峰面积呈线性关系,检出限(3S/N)为0.69μg.L-1。用标准加入法做回收试验,测定平均回收率为97%。更多还原

【Abstract】 A method for determination of N-ethyl perfluorooctanesulfonamide in textiles by GC-MS was proposed.N-ethyl perfluorooctanesulfonamide in samples was extracted with methanol ultrasonically and the extract was concentrated to 5 mL in a rotary evaporator.The DB-5MS column was used for separation,and selected ion monitoring mode was used in the MS measurement.Ions used for qualitative analysis were: m/z 69,108,131,169,448;ion use for quantitative analysis was m/z 108.Linear relationship was obtained between values of peak area and concentration of N-ethyl perfluorooctanesulfonamide in the range of 0.2-20.0 mg·L-1,with detection limit(3S/N) of 0.69 μg·L-1.Test for recovery was made by standard addition method,giving value of average recovery of 97%.更多还原