四氢噻吩加臭剂理化试验及嗅觉感官试验  

Physicochemical Test and Olfactory Sensory Test of Tetrahydrothiophene Odorant

作　　者：张涛 罗辰 谭松玲 李梦媛 颜谨[2] 岳志宏 ZHANG Tao;LUO Chen;TAN Songling;LI Mengyuan;YAN Jin;YUE Zhihong

机构地区：[1]北京市燃气集团有限责任公司,北京100035 [2]北京市公用事业科学研究所有限公司,北京100011

出　　处：《煤气与热力》2025年第4期V0026-V0031,共6页Gas & Heat

摘　　要：选取某国产四氢噻吩加臭剂A、某进口四氢噻吩加臭剂B进行单一样理化试验和掺混样理化试验。单一样理化试验结果表明,2种加臭剂的纯度均大于99%,均未检测到水分、不溶物。掺混样理化试验结果表明掺混样的纯度均大于99%,掺混样理化性质稳定。对5种样品气(加臭剂质量浓度分别为1.67、0.50、0.17、0.08、0.05 mg/m^(3))进行K试验,加臭剂质量浓度均为0.08 mg/m^(3)时,各样品气气味强度嗅觉等级均可达到2级及以上。对5种样品气(加臭剂质量浓度均为0.08 mg/m^(3))进行公众调查,统计样品气气味强度嗅觉等级达到2级及以上人数占总人数的比例,进口四氢噻吩加臭剂与国产四氢噻吩加臭剂的体积之比为3∶1的掺混样该比例最高为90.0%。将K试验结果和公众调查结果进行加权计算,进口四氢噻吩加臭剂与国产四氢噻吩加臭剂的体积之比为1∶3的掺混样加权结果最高。进口四氢噻吩加臭剂与国产四氢噻吩加臭剂按照1∶3的体积比进行混合效果更好。A domestic tetrahydrothiophene odorant A and an imported tetrahydrothiophene odorant B were selected for single sample and mixed sample physicochemical tests.The single sample physicochemical test results show that the purity of both odorants is greater than 99%,and no moisture or insoluble substances are detected.The physicochemical test results of the mixed samples show that the purity of the mixed samples is greater than 99%,and the physicochemical properties of the mixed samples are stable.The odor intensity test of 5 sample gases(the mass concentration of odorant are 1.67,0.50,0.17,0.08,0.05 mg/m^(3))is carried out.When the mass concentration of odorant is 0.08 mg/m^(3),the odor intensity of each sample gas can reach level 2 or above in terms of olfactory grade.A public survey is conducted on 5 sample gases(the mass concentration of odorant is both 0.08 mg/m^(3)),and the number of people with odor intensity olfactory grade reaching grade 2 or above in mixed samples is counted.The mixed sample with a volume ratio of 3:1 between imported tetrahydrothiophene odorant and domestic tetrahydrothiophene odorant has the highest number of people,accounting for 90.0%of the total number of people.Weighted calculation is performed on the results of the K‐value experiment and the public survey.The weighted result of the mixed sample with a volume ratio of 1:3 between imported tetrahydrothiophene odorant and domestic tetrahydrothiophene odorant is the highest.Mixing in a ratio of 1:3 yields better results.

关 键 词：四氢噻吩加臭剂 理化性质 嗅觉感官 

分 类 号：TU996.7[建筑科学—供热、供燃气、通风及空调工程]