Concentrations of (a) ∑6IN-PCBs, (b) ∑12DL-PCBs, (c) ∑18PCBs, and (d) relative abundance of PCBs in tea samples from six categories. (IMAGE)

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Concentrations of (a) ∑6IN-PCBs, (b) ∑12DL-PCBs, (c) ∑18PCBs, and (d) relative abundance of PCBs in tea samples from six categories.

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Concentrations of (a) ∑6IN-PCBs, (b) ∑12DL-PCBs, (c) ∑18PCBs, and (d) relative abundance of PCBs in tea samples from six categories.

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New Contaminants

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