公开(公告)号：US5907108A

公开(公告)日：1999-05-25

申请号：US921888

申请日：1997-08-25

申请人： Luis H. Garcia-Rubio ,  Francisco Lanza ,  Paul J. Sacoto

发明人： Luis H. Garcia-Rubio ,  Francisco Lanza ,  Paul J. Sacoto

IPC分类号： G01N1/38 ,  G01N15/06 ,  G01N1/18

CPC分类号： G01N1/38 ,  G01N15/06

摘要： A system and method for the automatic sampling and dilution of homogeneous particle dispersions is developed that uses a multistep parallel dilution network system for the sample and diluent and includes variable dilution capabilities. The sample and diluent are combined and allowed to mix uniformly over a predetermined conduit length. Resampling from the first dilution step and recombining with another diluent line results in a second dilution step. The number of steps determines the dilution range; the manipulation of the sample and diluent flow rates provides a variable dilution ratio at each dilution step. An exemplary embodiment reduces the concentration of a latex sample for analysis with uv-vis spectrometry. In another embodiment, the emulsion polymerization of styrene is followed in real time with turbidity measurements taken on diluted samples.

摘要翻译： 开发了用于自动取样和稀释均相颗粒分散体的系统和方法，其使用用于样品和稀释剂的多步平行稀释网络系统，并且包括可变稀释能力。 将样品和稀释剂组合并允许在预定导管长度上均匀混合。 从第一稀释步骤重新采样并与另一稀释液管线重新组合导致第二稀释步骤。 步数确定稀释范围; 样品和稀释剂流速的操作在每个稀释步骤提供可变的稀释比。 示例性实施方案降低了用于用紫外 - 可见分光光度法分析的胶乳样品的浓度。 在另一个实施方案中，实时地跟踪苯乙烯的乳液聚合，并对稀释样品进行浊度测量。