Atmospheric PCDD/F and PCB levels implicated by pine (Cedrus deodara) needles at Dalian, China

作者：Chen Jingwen^*; Zhao Huimin; Gao Lina; Henkelmann Bernhard; Schramm Karl Werner

来源：Environmental Pollution, 2006, 144(2): 510-515.

DOI：10.1016/j.envpol.2006.01.039

• PCDD/F
• PCB
• Dalian
• pine needle
• concentration

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.

• 出版日期2006-11
• 单位大连理工大学