Synthetic organic chemicals
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Synthetic Organic Chemicals. Synthetic Organic Chemicals. Organochlorines. Dioxins Pesticides. Dioxin. Chlordane. PCBs. Cleaning agents. DDT. PBDE. Flame Retardants. Solubility. Organochlorines as well as many other synthetic organic compounds are poorly soluble in water. 0.2 µg/L.

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Synthetic Organic Chemicals

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Synthetic organic chemicals

Synthetic Organic Chemicals


Synthetic organic chemicals

Synthetic Organic Chemicals

Organochlorines

Dioxins

Pesticides

Dioxin

Chlordane

PCBs

Cleaning agents

DDT

PBDE

Flame Retardants


Solubility

Solubility

Organochlorines as well as many other synthetic

organic compounds are poorly soluble in water


Synthetic organic chemicals

0.2 µg/L

Dioxin

PCB

10-31 µg/L

(50% Cl)

DDT

insoluble

Principally carbon, hydrogen


Synthetic organic chemicals

Dioxin


Synthetic organic chemicals

Hexane

Improving Solubility

Organic Solvents

Soap/detergents

Structural/chemical similarity between

the chemical and the solvent.


Synthetic organic chemicals

Bioaccumulation, Lipids and Solubility

Structural similarity between

the chemical and the solvent.


Synthetic organic chemicals

Solubility

A chemical’s solubility in lipids is inversely

proportional to its solubility in water.

Lipid (Carbon/hydrogen)

Carbon/hydrogen

water


Synthetic organic chemicals

Zooplankton to fish: 31 x

Fish to eagle: 4.8x

Bio-Accumulation

Water and phytoplankton to zooplankton: 800 x

Overall: 120,000 times original concentration


Synthetic organic chemicals

PCBs

Spokane

River

Nov. 2002

Banned in 1979

Smallmouth bass - 1100-1800 ppb    Round gobies - 200-800 ppb    Zebra mussels - 100 ppb


Synthetic organic chemicals

Toxaphene Biomagnification

Seawater

0.0003 ppb

Arctic cod muscle

14 - 46 ppb

Narwhal

blubber

2440 - 9160 ppb

BAF = 8 million


Synthetic organic chemicals

Mirex: 1959 - 1976

highest levels ever recorded in a living organism.


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