专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5247842A Electrospray apparatus for producing uniform submicrometer droplets 失效
标题翻译：用于生产均匀脱墨剂的电喷涂装置
公开(公告)号：US5247842A
公开(公告)日：1993-09-28
申请号：US767670
申请日：1991-09-30
申请人： Stanley L. Kaufman , Fahimeh Zarrin , Frank Dorman
发明人： Stanley L. Kaufman , Fahimeh Zarrin , Frank Dorman
IPC分类号： B05B5/00 , B05B5/025 , G01N15/06 , G01N15/10
CPC分类号： B05B5/002 , B05B5/025 , G01N15/065 , G01N15/1031 , H01J49/165
摘要： An electrospray nebulizer generates an aerosol comprised of submicrometer droplets substantially uniform in size. A liquid sample is supplied at a controlled rate to a capillary needle of the nebulizer, and droplets are formed due to an electrical field in the region about the needle discharge. The tendency of the droplets to disintegrate due to Coulomb forces is counteracted by sources of ionizing radiation within the nebulizer. The ions reduce the charge in each droplet while solvent evaporation reduces the diameter of the droplet. To further ensure against Coulomb disintegration, a controlled air sheath is introduced to the nebulizer for transporting droplets more rapidly downstream. Optionally, solvent vapor can be introduced into the air flow to reduce the rate of solvent evaporation within the nebulizer, and ions can be added to the air flow upstream of the needle discharge.
摘要翻译：电喷雾雾化器产生由基本上均匀尺寸的亚微米液滴组成的气溶胶。将液体样品以受控的速率供应到喷雾器的毛细管针，并且由于围绕针排出的区域中的电场而形成液滴。液滴由于库仑力而分解的倾向由喷雾器内的电离辐射源抵消。离子减少每个液滴中的电荷，而溶剂蒸发减小了液滴的直径。为了进一步确保不会克服库仑分解，将控制的空气鞘引入雾化器，以便在下游更快速地输送液滴。任选地，可以将溶剂蒸汽引入空气流中以降低喷雾器内的溶剂蒸发速率，并且可以将离子加入到针放电上游的空气流中。

2. 发明授权

US5076097A Method and apparatus for determining concentration of macromolecules and colloids in a liquid sample 失效
标题翻译：用于测定液体样品中大分子和胶体浓度的方法和装置
公开(公告)号：US5076097A
公开(公告)日：1991-12-31
申请号：US546004
申请日：1990-06-28
申请人： Fahimeh Zarrin , Stanley L. Kaufman , Frank D. Dorman
发明人： Fahimeh Zarrin , Stanley L. Kaufman , Frank D. Dorman
IPC分类号： G01N15/06 , G01N30/62
CPC分类号： G01N15/065 , G01N30/62
摘要： An apparatus and method for determining the concentration of macromolecules and colloids in a liquid sample is disclosed. The apparatus preferably includes an electrospray apparatus 16 for forming droplets from the sample. Liquid is removed from the droplets by drying in the electrospray apparatus 16, thereby forming an aerosol. The aerosol of a size greater than a predetermined size is then counted by a condensation nucleus counter 52. In this manner, the target macromolecules and colloids are counted. This apparatus is capable of detecting very small macromolecules and colloids of a wide range of materials in a liquid, for example, individual molecules having molecular weight as small as 10,000.
摘要翻译：公开了一种用于确定液体样品中大分子和胶体浓度的装置和方法。该装置优选地包括用于从样品形成液滴的电喷射装置16。通过在电喷雾装置16中干燥从液滴中除去液体，从而形成气溶胶。然后通过冷凝核计数器52计数尺寸大于预定尺寸的气溶胶。以这种方式计数目标大分子和胶体。该装置能够检测液体中各种材料的非常小的大分子和胶体，例如分子量小至10,000的单个分子。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式