Chromatography is a technique used to separate mixtures of chemical compounds or biomolecules based on differences in their relative affinities for mobile (gas or liquid) and stationary (solid or ...

Exclusion chromatography can be used to separate molecules on the basis of size 1,2. The technique described here, which uses gel filtration to separate high-molecular-weight DNA from smaller ...

The widespread presence of polycyclic aromatic hydrocarbons (PAHs) and toxic heavy metals in soils is having harmful effects on food crops and the environment. However, the defense mechanisms and ...