DNA was adsorbed predominantly by dehydration effects and hydrogen bonding on organic clays and kaolinite and 43.3-65.2% of DNA was adsorbed on inorganic clays and goethite through ligand exchange.

• 在含有机质粘粒和高岭石表面；DNA可能主要通过脱水和氢键作用；而在去有机质粘粒和针铁矿表面；DNA主要通过配位交换吸附；占43.；3-65