Pollution level and distribution of PCDD/PCDF congeners between vapor phase and particulate phase in winter air of Dalian, China.
Pollution level and distribution of PCDD/PCDF congeners between vapor phase and particulate phase in winter air of Dalian, China.
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DOI：
10.1016/s1001-0742(11)61073-5
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发表时间：
2011-06
影响因子：
6.9
通讯作者：
Wei Wang;Songtao Qin;Yu-Fei Song;Qian Xu;Yu-wen Ni;Jiping Chen;Xue-ping Zhang;J. Mu;Xiuhua Zhu
中科院分区：
文献类型：
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作者：
Wei Wang;Songtao Qin;Yu-Fei Song;Qian Xu;Yu-wen Ni;Jiping Chen;Xue-ping Zhang;J. Mu;Xiuhua Zhu
2009年12月，在大连交通大学1号楼楼顶和大连气象台楼顶两个地点，采用主动式大容量空气采样器对大气进行了采样。测定了空气中多氯二苯并二恶英和二苯并呋喃（PCDD/Fs）的浓度及其气相和颗粒相的同系物。样品分析结果表明，颗粒相中PCDD/Fs的浓度高于气相中的浓度。气相和颗粒相PCDD与PCDF的比值均小于0.4。大连交通大学的气相和颗粒相的总I-TEQ值分别为5.5和453.8 fg/m3，大连气象台的分别为16.6和462.1 fg/m3。大连市大气I-TEQ值为5.5-462.1 fg/m3，低于国际标准，大连市大气质量较好。
In December 2009, ambient air was sampled with active high-volume air samplers at two sites: on the roof of the No. l building of Dalian Jiaotong University and on the roof of the building of Dalian Meteorological Observatory. The concentrations and the congeners between vapor phase and particulate phase of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) in the air were measured. Sample analysis results showed that the concentrations of PCDD/Fs in particulate phase was higher than that in gaseous phase. The ratio of PCDD to PCDF in gaseous phase and particulate phase was lower than 0.4 in all samples. The total I-TEQ value in gaseous phase and particulate phase was 5.5 and 453.8 fg/m3at Dalian Jiaotong University, 16.6 and 462.1 fg/m3at Dalian Meteorological Observatory, respectively. The I-TEQ value of Dalian atmosphere was 5.5-462.1 fg/m3which was lower than international standard, the atmospheric quality in Dalian is better.