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PCB£¨¶àÂÈÁª±½£© have been detected on the order of a few ng m_3 down to pg m_3 levels even in remote and pristine environments, namely in the ambient air in the Great Lakes area , over the North Sea, and in the arctic . |
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- Ó¦Öú: 84 (³õÖÐÉú)
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- ×¢²á: 2006-08-20
- ÐÔ±ð: GG
- רҵ: Åäλ»¯Ñ§

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