摘要：
With the development and industrial applications of nanotechnology, increasing productions of engineered nanomaterials enter the aqueous environments by several routes (i.e. remediation purpose and unintentional release). Due to the potential risk deriving from their higher surface activity and greater transferability, engineered nanoparticles bring a new challenge for the environmental systems and human beings. Under favorable particle??“particle interactions, nanoparticles aggregate, form large clusters, and settle out from the environmental solutions. The settling process can reduce the mobility of nanoparticles in environmental systems. In the current study, sedimentation experiments were conducted under different environmental conditions to investigate the settling process of nanoparticles. The results indicated that the A/A
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