Establishment of a Method for the Determination of Trihalomethanes by Headspace-Gas Chromatography Mass Spectrometry

    ANXiaowei，LYUZewei (Tianjin Hongqiao District Disease Control and Prevention Center， Tianjin 300l31， China)

    Abstract： Objective： To establish a method for the determination of trihalomethanes in drinking water by headspace injection-gas chromatography mass spectrometry，to understand the status of drinking water disinfection by-products in Tianjin，and to provide technical support for the implementation of national drinking water projects. Method： 0.3g of ascorbic acid was added to the brown grinding glass botte during sample collection， and capped and sealed after sampling.A 10.0mL water sample was accuratelypipetted into a 20mL headspace vial， automatically filed with headspace ......