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Effects of Fluids Chemistry

Fluid chemistry and molecular structure have a significant effect on the sorption process. This is demonstrated by observations that the saturation levels of distilled water, tap water and sea water seem to decrease in the above order while the increasing activity levels of water, methylene chloride (CH2CI2) and n-hepatine correspond to higher saturation levels in PEEK polymer. In contrast with water and methylene chloride the latter chemical exhibits weight-gain data akin to that of a [Pg.24]

It was also recorded that certain chemicals caused scissions within polymeric chains and of side groups. Relevant data are given in Table 4.1, demonstrating a strong dependence on temperature and activity that brings about weight losses in exposed samples. [Pg.25]


The indirect method of deducing the isotope composition of ore fluids is more frequently used, because it is technically easier. Uncertainties arise from several sources uncertainty in the temperature of deposition, and uncertainty in the equations for isotope fractionation factors. Another source of error is an imprecise knowledge of the effects of fluid chemistry ( salt effect ) on mineral-water fractionation factors. [Pg.125]


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Effect of Fluids

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