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纳米粒子(又称胶体球粒子、超微粒子)的大小范围在1nm到1μm,因此,过去所谓的“溶解态”(传统上区分“溶解态”和颗粒态”是以能否通过0.45μm孔径是滤膜伟标准)实际上包括了真正的溶解态部份和胶体部份。球化循环中起着重要作用,因而掀起了研究纳米粒子的高潮。目前,对纳米粒子的研究基本上已达成以下三方面的共识。首先,海水中的纳米粒子高度富集,并在所谓的溶解有机碳(DOC)中占有相当大的比例。其次,由于胶体物质中至少有一部分被认为在水柱中是易变的,且循环速度较快,因此,在理解有机碳循环的动力学特征时,胶体可能起到了关键性的作用。最后,水溶液体系中含有机物丰富的胶体物质,能够影响与其联系密切的痕量元素的迁移转化和生物利用性。本文将对近年来海水中纳米粒子的研究现状与进展予以介绍。
Nanoparticles (also called colloidal particles, ultrafine particles) range in size from 1 nm to 1 μm, so the so-called “dissolved state” (traditionally distinguished between “dissolved state” and “particle state” Membrane Wei standard) actually contains the real part of the dissolved state and colloidal part of the ball cycle plays an important role, which set off the climax of the study of nanoparticles.At present, the study of nanoparticles has basically reached the following First, the nanoparticles in seawater are highly enriched and occupy a significant proportion of what is called dissolved organic carbon (DOC) .Second, since at least a portion of the colloidal material is thought to be volatile in the water column Colloids may play a key role in understanding the kinetic characteristics of the organic carbon cycle.Finally, the presence of organic-rich colloids in aqueous systems can affect the amount of trace-associated trace Element transfer and bioavailability.In this paper, we will introduce the research status and progress of nano-particles in seawater in recent years.