Home / Standards / GB/T 40704-2021 GB/T 40704-2021 Active Natural gas—Determination of odorant tetrahydrothiophene—On-line sampling gas chromatography method 天然气 加臭剂四氢噻吩含量的测定 在线取样气相色谱法 Standard Type GBT ICS 75.060 CCS E 24 Status 现行 Issue Date 2021-10-11 Implementation 2022-05-01 Responsible Dept 国家标准委 Drafting Unit N/A