Chen Jingwen, Zhao Huimin, Gao Lina, Henkelmann Bernhard, Schramm Karl-Werner
Department of Environmental Science and Technology, Dalian University of Technology, Linggong Road 2, Dalian 116024, China.
Environ Pollut. 2006 Nov;144(2):510-5. doi: 10.1016/j.envpol.2006.01.039. Epub 2006 Mar 20.
Dalian is a seaside city situated in the northeastern monsoon area of China. For the first time, levels of PCDD/F and PCB congeners in pine (Cedrus deodara) needles of Dalian urban areas were investigated. Two sampling campaigns with 17 sampling points were performed in 2002. The summation of tetra- to octachlorinated PCDD/Fs and summation of 209 PCB congeners in Dalian pine needles averaged 127+/-40 ng/kg (dry) and 4389+/-1575 ng/kg (dry), respectively. Average toxic equivalence (TEQ) for PCDD/Fs and PCBs are 2.1 and 0.4 ng/kg (dry), respectively. The pine needles can differentiate spatial variation of the pollutants. The PCDD/F and PCB levels in Dalian pine needles are low or comparable with other international regions that were not impacted by evident point sources. The data can serve as a base for long-term spatial and temporal studies of PCDD/Fs and PCBs in China.
大连是中国东北季风区的一座海滨城市。首次对大连市区雪松针叶中的多氯二苯并对二噁英/多氯二苯并呋喃（PCDD/F）和多氯联苯（PCB）同系物水平进行了调查。2002年开展了两次采样活动，设置了17个采样点。大连松针中四至八氯代PCDD/F的总量以及209种PCB同系物的总量分别平均为127±40纳克/千克（干重）和4389±1575纳克/千克（干重）。PCDD/F和PCB的平均毒性当量（TEQ）分别为2.1和0.4纳克/千克（干重）。松针能够区分污染物的空间变化。大连松针中的PCDD/F和PCB水平较低，或与其他未受明显点源影响的国际地区相当。这些数据可为中国PCDD/F和PCB的长期时空研究提供基础。
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