Methods Volatile halogenated hydrocarbons in tap water were determined by head space gas chromatography and other organic pollutants were determined by gas chromatography/mass spectrometry (GC/MS).

• 方法用顶空气相色谱法测定自来水中挥发性卤代烃，用气相色谱／质谱联用(GC/MS)法测定其他有机污染物。