DRIFT OF DROPS IN DENSITY GRADIENT COLUMNS
DRIFT OF DROPS IN DENSITY GRADIENT COLUMNS
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DOI：
10.1016/0003-2697(60)90021-x
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发表时间：
1960-01-01
影响因子：
2.9
通讯作者：
GASEK, JM
中科院分区：
文献类型：
--
作者：
MILLER, GL;GASEK, JM
氯化钠溶液液滴在由溴苯和煤油混合物组成的密度梯度柱中的漂移速率随着溶质浓度的增加而增加，并且随着液滴尺寸的增加而减小。尺寸也会影响水滴的位置，较大的水滴比较小的水滴往往会停在更高的位置。在其组件经氯化钙干燥的柱中漂移最大，在其组件用水或氯化钠溶液预饱和的柱中漂移减小，在其组件用溴化钾溶液预饱和的柱中几乎消除。它不会受到用柱中所用溶剂混合物预饱和水性测试样品的显着影响。对于含有氯化钠以外的溶质的测试样品也观察到了漂移。此外，由溴苯和二甲苯组成的塔比由溴苯和煤油组成的塔大。指出了这些发现的重要性，因为它们可能影响密度测量的误差。还描述了一种在密度梯度柱中获得线性的新方法。
The rate of drift of drops of sodium chloride solution in density gradient columns composed of mixtures of bromobenzene and kerosine increases with concentration of solute and decreases with drop size. Size also affects position of drop, larger drops tending to come to rest at higher levels than smaller drops. Drift is greatest in columns whose components are dried over calcium chloride, is diminished in columns whose components are presaturated with water or sodium chloride solution, and is nearly eliminated in columns whose components are presaturated with potassium bromide solution. It is not affected significantly by presaturation of aqueous test samples with the mixtures of solvents used in the columns. Drift is also observed with test samples containing solutes other than sodium chloride. Further, it is greater in columns composed of bromobenzene and xylene than in those composed of bromobenzene and kerosine. The significance of these findings as they may affect error of measurement of density is pointed out. A new method for obtaining linearity in density gradient columns also is described.