典型污染时段鹤山大气VOCs的臭氧生成潜势及来源解析

周炎1; 钟流举1*; 岳玎利1; 曾立民2; 张涛1

引用本文:	周炎1,钟流举1*,岳玎利1,曾立民2,张涛1.典型污染时段鹤山大气VOCs的臭氧生成潜势及来源解析[J].环境监控与预警,2014,6(4):1-5
	周炎1,钟流举1*,岳玎利1,曾立民2,张涛1.Potential Ozone Formation and Emission Sources of Atmospheric VOCs in Heshan during Typical Pollution Episode[J].Environmental Monitoring and Forewarning,2014,6(4):1-5

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典型污染时段鹤山大气VOCs的臭氧生成潜势及来源解析
周炎1,钟流举1*,岳玎利1,曾立民2,张涛1^1,2
1. 广东省环境监测中心国家环境保护区域空气质量监测重点实验室，广东广州 510308;2.北京大学环境科学与工程学院环境模拟与污染控制国家重点联合实验室，北京 100871

摘要:

2013年10月对广东鹤山大气中挥发性有机化合物（VOCs）变化特征、臭氧生成潜势和来源进行了研究。结果表明，观测期间测得的VOCs总平均值为26.6×10-9，表现为烷烃＞苯系物＞烯烃；烯烃日间值变化幅度较大，在清晨达到最大值；苯系物与一次污染物CO的变化趋势十分接近；烷烃的峰值出现时间较苯系物有所提前，且在短时间内迅速升高，表明观测点周边可能存在排放源；大气中各类VOCs的臭氧生成潜势（OFP）贡献表现为苯系物＞烯烃＞烷烃；从物种来看，乙烯等10种物质对总OFP的贡献占到了80.4%；观测期间测得的OFP贡献较大的VOCs物种主要来源于石化源、油漆溶剂和汽油挥发源。

关键词: 挥发性有机化合物臭氧生成潜势来源解析鹤山

DOI：

分类号:X515

基金项目:

Potential Ozone Formation and Emission Sources of Atmospheric VOCs in Heshan during Typical Pollution Episode

周炎1,钟流举1*,岳玎利1,曾立民2,张涛1

Abstract:

Atmospheric VOCs was measured at Heshan in October 2013. The variation pattern, ozone formation potential and emission sources were analyzed. Average concentration of total VOCs observed was 26.6×10-9, while alkane＞BTEX＞alkene. Concentration of alkene peaked at early morning with large variations during the daytime; variation patterns of BTEX and CO were quite similar; concentration of alkane peaked earlier than BTEX and rised rapidly in a very short time, which indicated the influence of nearby emission sources. Ozone formation potential calculation by the speciated VOCs appeared as BTEX＞alkene＞alkane. 10 key VOCs species including ethylene contributed 80.5% of total OFP;VOCs contributed most of OFP were mainly came from petrochemistry, paint solvents and gasoline vapor during observation. 

Key words: VOCs Ozone formation potential Source apportionment Heshan