石化企业循环水的VOCs成分谱

采用顶空-气相色谱-质谱联用技术,针对3家石油化工企业的38个循环水样进行了VOCs的定性、定量分析。结果表明,石化企业循环水中主要含有烷烃、烯烃、卤代烃、芳香烃、含氧有机物等5类物质,其中卤代烃占总量的67%(w),芳香烃化合物占24%(w),烃类化合物、含氧化合物含量比较低,分别占4%(w)。本研究进一步完善了我国VOCs排放源成分谱,同时也为石化企业循环水中VOCs的管控提供了数据支持。

Composition spectrum of VOCs in circulating water from petrochemical enterprises

The qualitative and quantitative analysis of VOCs was carried out on 38 circulating water samples from 3 petrochemical enterprises by using headspace gas chromatography-mass spectrometry. The results show that the circulating water in petrochemical enterprises mainly contains 5 kinds of substances such as alkanes,olefins,halogenated hydrocarbons,aromatic hydrocarbons and oxygen-containing organic substances,wherein,with respect to the total amount,halogenated hydrocarbons account for 67%,aromatic hydrocarbons account for 24%,and hydrocarbons and oxygen-containing compounds were relatively low,accounting for 4% respectively. This study further improved the composition spectrum of VOCs emission sources in China,and also provided effective data support for management and control of VOCs in circulating water system of petrochemical enterprises.