Tangential flow fractionation system for capturing natural and manufactured nanoparticles

这是一种应用于过滤设备，将用于捕获纳米颗粒和离心机，这是准备样品进行微量分析所需的。切向流动单元是一种温和的方法，可以在不改变纳米颗粒的情况下提取它们。它提供了一种准确测量样品中纳米颗粒数量的方法，因为捕获颗粒的膜不会像其他类型的过滤那样堵塞。溶液流经相对较大的滤膜，滤膜的孔径可以防止任何大于所需尺寸的颗粒通过。由于流体是通过膜泵送的，而不是直接穿过膜，所以较大的颗粒不会积聚在膜表面并堵塞它。取而代之的是，它们被切向或横流冲走。要求的第二个项目是将溶液从膜表面保留的颗粒中分离所需的离心机。这是必要的，这样才能用电子显微镜检查颗粒，以确定它们的数量和性质。

This is an application for filtration equipment will be used to capture nanoparticles and a centrifuge that is needed to prepare the samples for microanalysis. The tangential flow unit is a gentle method of extracting nanoparticles without changing them. It provides an accurate method of measuring the quantity of nanoparticles in a sample because the membranes that capture the particles do not get clogged as they do with other types of filtration. The solution flows across a relatively large filter membrane with a pore size that will prevent any particles greater than the desired size from passing through. Since the flud is pumped across rather than directly through the membrane, the larger particles do not accumulate on the membrane surface and clog it. Instead, they are swept away by the tangential, or cross flow.The second item requested is a centrifuge required to separate the solution from the particles retained on the membrane surface. This is needed so that the particles can be examined using an electron microscope to determine their amount and nature.