Water quality — Determination of dioxin-like polychlorinated biphenyls — Method using gas chromatography/mass spectrometry
水质与灰分;二恶英类多氯联苯的测定——方法采用气相色谱/质谱法
发布日期:
2007-02-12
ISO 17858:2007规定了使用高分辨率气相色谱/高分辨率质谱(HRGC/HRMS)测定水和废水(悬浮固体含量小于1%)中二恶英样四至七氯化联苯(PCBs)的方法。规定了通常可以在不存在干扰的情况下确定二恶英类多氯联苯的最低水平。这种方法是“基于性能的”。允许分析员修改该方法以克服干扰或降低测量成本,前提是满足该方法中的所有性能标准。给出了建立方法等效性的要求。
ISO 17858:2007 specifies a method for the determination of dioxin-like tetra- to hepta-chlorinated biphenyls (PCBs) in waters and wastewaters (containing less than 1 % suspended solids) using high-resolution gas chromatography/high-resolution mass spectrometry (HRGC/HRMS). The minimum levels at which the dioxin-like PCBs can typically be determined with no interferences present are specified. This method is "performance based". The analyst is permitted to modify the method to overcome interferences or lower the cost of measurements, provided that all performance criteria in this method are met. The requirements for establishing method equivalency are given.