聚苯乙烯磺酸钠树脂中的残留单体苯乙烯的GC-MS法测定

Determination of Styrene in Sodium Polystyrene Sulfonate Resin by GC-MS

建立了顶空GC-MS法测定聚苯乙烯磺酸钠树脂中苯乙烯单体的含量。以苯乙烯-d8为内标,采用石英毛细管色谱柱,以选择离子监测法定量。苯乙烯在0.5～15μg/ml浓度范围内线性关系良好(r=0.9995),检测限为1 ng/g(1 ppb)。

A GC-MS method with headspace injection was established for the determination of styrene in sodium polystyrene sulfonate resin. Styrene-d8 was used as internal standard. A quartz capillary column was used by selective ion monitoring. The calibration curve of styrene was linear in the range of 0.5 - 15 μg/ml （r=0.999 5）. The detection limit was 1 ng/g （1 ppb）.