sw17 - Soils and Organic Contaminants Organochlorines...

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Soils and Organic Contaminants
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Dioxin PCB DDT Principally carbon , hydrogen C 11 H 18 O 2 Cl 4 C 14 H 22 Cl 5 C 12 H 21 Cl 2 Do not possess an electrical charge Organochlorines
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Dioxin Dioxin water solubility: 0.2 µg/L
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Dioxin PCB DDT 10 µg/L 0.2 µg/L Uncharged and principally carbon , hydrogen < 0.1 µg/L
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Toxaphene: 3 mg/L Dieldrin: 186 ug/L Chlordane: 9 ug/L Organochlorines
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Solubility water Hexane Acetone Lipids Carbon-based compounds dissolve more easily in carbon- based solvents. carbon carbon carbon carbon Dioxin
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Synthetic organic chemicals can be acutely toxic In high doses, but they also can bioaccumulate In organisms, creating chronic toxicity at lower doses Their ability to bioaccumulate is related to their poor water solubility.
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Bioaccumulation in Organisms The chemical essentially dissolves into the lipid tissues carbon Dioxin
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Seawater Arctic cod muscle Narwhal blubber 14 - 46 ppb 0.0003 ppb 2440 - 9160 ppb Toxaphene 50,000 X ~ 8 M X carbon lipid 400,000 tons: 1946 to 1974 (670 chemicals)
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1. Many synthetic organic chemicals are uncharged. 2. Because they are uncharged, they do not permit
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sw17 - Soils and Organic Contaminants Organochlorines...

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