标准摘要
[中文适用范围]: 本国际标准规定了一种静态顶空方法,用于定量气相色谱测定土壤中的挥发性芳香烃、卤代烃和选定的脂肪族醚。本国际标准适用于所有类型的土壤。定量的检出限取决于所使用的检测系统以及用于土壤样品提取的甲醇等级质量。根据本国际标准规定的条件,以下检出限适用(以干物质为基础表示): 使用 GC-FID 时的典型检出限: - 挥发性芳香烃:0,2 mg/kg; - 脂肪族醚(如甲基叔丁基醚 MTBE 和叔戊基甲基醚 TAME):0,5 mg/kg。 使用 GC-ECD 时的典型检出限: - 挥发性卤代烃:0,01 mg/kg 至 0,2 mg/kg。 通过使用具有选择离子检测的质谱法(MS),可实现某些化合物的更低检出限(见附件 D)。 [外文原描述]: ISO 22155:2016 specifies a static headspace method for quantitative gas chromatographic determination of volatile aromatic and halogenated hydrocarbons and selected aliphatic ethers in soil. ISO 22155:2016 is applicable to all types of soil. The limit of quantification is dependent on the detection system used and the quality of the methanol grade used for the extraction of the soil sample. Under the conditions specified in this International Standard, the following limits of quantifications apply (expressed on basis of dry matter). Typical limit of quantification when using GC-FID: - volatile aromatic hydrocarbons: 0,2 mg/kg; - aliphatic ethers as methyl tert.-butyl ether(MTBE) and tert.-amyl methyl ether (TAME): 0,5 mg/kg. Typical limit of quantification when using GC-ECD: - volatile halogenated hydrocarbons: 0,01 mg/kg to 0,2 mg/kg. Lower limits of quantification for some compounds can be achieved by using mass spectrometry (MS) with selected ion detection (see Annex D).
英文名称Soil quality — Gas chromatographic determination of volatile aromatic and halogenated hydrocarbons and selected ethers — Static headspace method