摘要
黑臭水体中致嗅挥发性物质是造成水体产生异味的主要原因。通过气相色谱/质谱法对黑臭水体中的挥发性组分进行连续监测,同时利用气味活性值(OAV)识别了其中的主要致嗅组分,并讨论了其在不同河道和不同时间的变化特征。结果显示:黑臭水体中检出频率和浓度最高的16种组分中,包括5种醛类、5种氯代烃、5种苯酚类物质及二甲基二硫醚。二甲基二硫醚、壬醛、辛醛、柠檬醛及苯酚的OAV>1,是研究选取河道中的主要致嗅组分。其中,辛醛与壬醛天然存在于自然水体中;二甲基二硫醚主要来源于黑臭水体中厌氧微生物代谢;而苯酚与柠檬醛可能是由于外源污染的排放。
Odorous volatile substances in the black-odorous water are the primary cause that led to unpleasant smells.Gas chromatography/mass spectrometry was applied to analyze volatile components in the typical black-odorous water.The main odorous components were obtained by odor activity value(OAV),and their characteristics were discussed.Results showed that a total of 16 components were recognized with high concentration and detection frequency,including 5 aldehydes,5 chlorinated hydrocarbons,5 phenolic substances and dimethyl disulfide.Dimethyl disulfide,furfural,octanal,citral and phenol with OAV>1 were supposed as the main odorous volatile substances in the water.Octanal and furfural are naturally present in the water.Dimethyl disulfide might be produced from the anaerobic microbial metabolism in the polluted water body,while phenol and citral was possibly from external pollution.
作者
崔健
李雨平
缪恒锋
阮文权
潘杨
CUI Jian;LI Yuping;MIAO Hengfeng;RUAN Wenquan;PAN Yang(School of Environmental and Civil Engineering,Jiangnan University,Wuxi 214122,China;Jiangsu Key Laboratory of Anaerobic Biotechnology,Wuxi 214122,China;Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment,Suzhou 215009,China;Jiangsu Provincial Key Laboratory of Environmental Science and Engineering,Suzhou 215009,China)
出处
《环境科学与技术》
CAS
CSCD
北大核心
2019年第10期128-133,共6页
Environmental Science & Technology
基金
水体污染控制与治理科技重大专项（2017ZX07203-003）
关键词
黑臭水体
GC-MS
致嗅物质
相关性分析
black-odorous water
GC-MS
odorous volatile substances
redundancy analysis
