Little direct information on organic contaminant persistence exists
beyond sodium fluoroacetate, p-dichlorobenzene and chlordane. However,
these three contaminants represent a wide range of octanol water
partition coefficientwith log Kow values of−0.061, 3.4 and 6.2 for sodium
fluoroacetate, p-dichlorobenzene and chlordane, respectively. As
Kow increases, the propensity for a chemical to associate with octanol
(and not with water) increases, which can be used as a proxy for the
tendency of a chemical to associate with a solid surface, like drinking
water infrastructure, and not dissolve in water. Data is available on
chlordane and p-dichlorobenzene on cement-mortar and iron surfaces,
and with cement-mortar for sodium fluoroacetate. Future research
could focus on these three chemicals, and the resulting data could be extrapolated
to other chemicals with similar Kow values.
Little direct information on organic contaminant persistence exists
beyond sodium fluoroacetate, p-dichlorobenzene and chlordane. However,
these three contaminants represent a wide range of octanol water
partition coefficientwith log Kow values of−0.061, 3.4 and 6.2 for sodium
fluoroacetate, p-dichlorobenzene and chlordane, respectively. As
Kow increases, the propensity for a chemical to associate with octanol
(and not with water) increases, which can be used as a proxy for the
tendency of a chemical to associate with a solid surface, like drinking
water infrastructure, and not dissolve in water. Data is available on
chlordane and p-dichlorobenzene on cement-mortar and iron surfaces,
and with cement-mortar for sodium fluoroacetate. Future research
could focus on these three chemicals, and the resulting data could be extrapolated
to other chemicals with similar Kow values.
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