JIS A 1966:2005 Indoor air -- Sampling and analysis of volatile organic compounds by sorbent tube/thermal desorption/capillary gas chromatography -- Pumped sampling
This standard provides general guidance for the sampling and analysis of volatile organic compounds (VOCs) in air. Applies to indoor air. This standard applies to a wide range of VOCs including hydrocarbons, halogenated hydrocarbons, esters, glycol ethers, ketones and alcohols. For measuring these VOCs, we recommend using samplers with different application ranges. However, since only a portion of low-boiling compounds is captured by the adsorbent, only a qualitative evaluation is possible. Furthermore, although all semi-volatile compounds are adsorbed by the adsorbent, only a portion can be recovered. Compounds tested according to this standard are shown in Table 1-13. Compounds not listed in the table can also be used, but it is recommended to use a backup sampler filled with an equivalent or stronger adsorbent. This standard is applicable to the measurement of organic compound (VOC) vapors with concentrations of individual organic compounds in the range 0.5-10 5 g/m. The upper limit of the usable range is determined by the adsorption capacity of the adsorbent used and the linear range of the gas chromatograph column and detector or the sample split ratio of the filter analytical equipment used. Adsorption capacity is measured as the air breakthrough capacity, and represents the maximum amount of air that does not break through during sampling. The lower limit of the usable range depends on the noise level of the detector and interfering substances from the analytical system or sampler. Typical examples of adsorbents when interfering substances are at I ng are properly prepared carbon-based adsorbents such as Tenax GR, Carbopack/Carbotrap, carbon molecular sieves, and pure activated carbon such as Spherocarb. An example of this is Tenax TA, and for the 5-50 ng level, there are porous polymers such as Chormosorb and Porapack. The procedure specified in this standard is applicable to small pumps with low flow rates, in which case a time-weighted average result is obtained. It cannot be applied to measurements of instantaneous or short-term concentration fluctuations.
JIS A 1966:2005 Referenced Document
ISO 6141:2000 Gas analysis - Requirements for certificates for calibration gases and gas mixtures
ISO 6145-1:1986 Gas analysis; Preparation of calibration gas mixtures; Dynamic volumetric methods; Part 1 : Methods of calibration
ISO 6145-3:1986 Gas analysis — Preparation of calibration gas mixtures — Dynamic volumetric methods — Part 3: Periodic injections into a flowing gas stream
ISO 6145-4:1986 Gas analysis; Preparation of calibration gas mixtures; Dynamic volumetric methods; Part 4 : Continuous injection method
JIS A 1966:2005 history
2015JIS A 1966:2015 Indoor air -- Sampling and analysis of volatile organic compounds by sorbent tube/thermal desorption/capillary gas chromatography -- Pumped sampling
2005JIS A 1966:2005 Indoor air -- Sampling and analysis of volatile organic compounds by sorbent tube/thermal desorption/capillary gas chromatography -- Pumped sampling