Environmental Fate Modeling

The specific ecological impact caused by pollution depends on its toxicity, degradation rate, and mobility in air, water, or land. Atmospheric, surface water, and groundwa-ter transport models help to predict the fate of chemical releases, but these models can be complex. Although crude, equilibrium partitioning models offer a simple approach for predicting the environmental fate of releases. Factors useful for predicting the environmental fate include:

• Bioconcentration factor (BCF)—the chemical concentration in fish divided by the chemical concentration in water

• Vapor pressure

• Water solubility

• Octanol/water partition coefficient—the equilibrium concentration in octanol divided by the equilibrium chemical concentration in the aqueous phase

• Soil/water partition coefficient—the chemical concentration in soil divided by the chemical concentration in the aqueous phase

Once pathways through the environment and final fate are determined, impact assessment focuses on the effects. For example, impact depends on the persistence of releases and whether these pollutants degrade into further hazardous by-products.

DIY Battery Repair

DIY Battery Repair

You can now recondition your old batteries at home and bring them back to 100 percent of their working condition. This guide will enable you to revive All NiCd batteries regardless of brand and battery volt. It will give you the required information on how to re-energize and revive your NiCd batteries through the RVD process, charging method and charging guidelines.

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