A common solution to the equilibration problem of silica with water is to use solvent that are "half-saturated"with water .They are prepared by saturating a given volume of hydrophobic solvent with water and then mixing it 1;1 with "dry"solvent.
提到的“half-saturated”solvent 在上面的文章中是这样说的: One trick that has been used to get around this problem is to use non-polarsolvents like hexane or methylene chloride that are half saturated with water .To accomplish this you take a volume of the solvent and saturante it with water by adding some water to it and stir it for a while,then you mix this wanter-saturated solvent and mix it with an equal volume of "dry"solvent
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