標準號：BS ISO 14965-2000
中文標準名稱：環境空氣.全部無甲烷有機化合物的測定.低溫預濃縮和直接火焰電離探測法
英文標準名稱：Ambient air. Determination of total non-methane organic compounds. Cryogenic preconcentration and direct flame ionization detection method
標準類型：Z15
發布日期：2000/5/15 12:00:00
實施日期：2000/5/15 12:00:00
中國標準分類號：Z15
國際標準分類號：13.040.20
適用范圍：This International Standard describes a procedure for sampling and determining concentrations of total non-methane volatile organic compounds (NMVOC) in the ambient atmosphere. This International Standard describes the collection of cumulative samples in passivated stainless steel canisters and subsequent laboratory analysis. It describes a procedure for sampling in canisters at final pressures above atmospheric pressure (referred to as pressurized sampling). It employs a cryogenic trapping procedure for concentration of the NMVOC prior to analysis. This International Standard describes the determination of the NMVOC by simple flame ionization detection (FID), without the gas chromatographic columns and complex procedures necessary for species separation. This International Standard is applicable to carbon concentrations in the range from 20 ppbC to 10 000 ppbC. See 12.4 for procedures for lowering the range. Several variations to the method described in this International Standard are also possible; see clause 12.