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    • 1. 发明申请
    • HIGH CAPACITY ION CHROMATOGRAPHY STATIONARY PHASE AND METHOD OF FORMING
    • 高容量离子色谱固定相及其制备方法
    • WO2011106720A3
    • 2011-09-01
    • PCT/US2011/026343
    • 2011-02-25
    • DIONEX CORPORATIONSRINIVASAN, KannanPOHL, Christopher, A.BHARDWAJ, SheetalLIN, Rong
    • SRINIVASAN, KannanPOHL, Christopher, A.BHARDWAJ, SheetalLIN, Rong
    • B01J41/20B01J41/04B01J39/26B01J47/00B01D15/36
    • The present invention provides a new design for high capacity stationary phases for chromatography, for example, ion chromatography. The stationary phases include a first polymer layer in contact with and at least partially coating the substrate of the stationary phase. The first polymer layer serves as a foundation for the attachment, and in various embodiments, the growth and attachment, of a highly hyperbranched polymer structure, typically based on one or more products of condensation polymerization. Multiple components are of use in forming the first polymer layer and the hyperbranched polymer structure, thereby providing a stationary phase that can be engineered to have a desired property such as ion capacity, ion selectivity, and the like. Exemplary condensation polymers are formed by the reaction of at least one polyfunctional compound with at least one compound of complimentary reactivity, e.g., a nucleophilic polyfunctional compound reacting with an electrophilic compound.
    • 本发明提供了用于色谱法的高容量固定相的新设计,例如离子色谱法。 固定相包括与固定相的基底接触并且至少部分涂覆固定相的基底的第一聚合物层。 第一聚合物层用作附着的基础,并且在各种实施方案中,高度超支化聚合物结构的生长和附着通常基于一种或多种缩聚产物。 多种组分可用于形成第一聚合物层和超支化聚合物结构,从而提供可被设计成具有期望性质如离子容量,离子选择性等的固定相。 示例性的缩合聚合物通过至少一种多官能化合物与至少一种互补反应性化合物(例如与亲电子化合物反应的亲核多官能化合物)反应而形成。
    • 2. 发明申请
    • PARKING A SAMPLE STREAM AND SUPPRESSING THE SAMPLE
    • 停泊一个样品流并阻止样品
    • WO2006029099A1
    • 2006-03-16
    • PCT/US2005/031579
    • 2005-09-01
    • DIONEX CORPORATIONSRINIVASAN, KannanLIN, Rong
    • SRINIVASAN, KannanLIN, Rong
    • G01N30/96
    • G01N30/96G01N30/02G01N2030/146G01N2030/965B01D15/36
    • Pretreatment method and apparatus to remove matrix ions from a liquid sample, prior to separation of the sample analytes (e.g. by chromatography), by flowing the liquid sample into a sample compartment (16) and stopping the flow. The sample compartment has a wall comprising an ion exchange membrane (12, 14) having exchangeable ions of the same charge as the matrix ions to be removed. A regenerant liquid stream (22, 24) flows through a regenerant flow compartment (18, 20) on the other side of the membrane from said parked liquid sample. Matrix ions in the parked liquid sample are transported across the membrane into the regenerant flow compartment (18, 20). Suppression may be performed electrolytically and/or chemically. A concentrator column may also be used.
    • 在分离样品分析物(例如通过色谱法)之前,通过将液体样品流入样品室(16)并停止流动,从液体样品中去除基质离子的预处理方法和装置。 样品室具有包含具有与要除去的基质离子相同电荷的可交换离子的离子交换膜(12,14)的壁。 再生剂液体流(22,24)从所述停放的液体样品流过膜的另一侧上的再生剂流动隔室(18,20)。 停放的液体样品中的基质离子通过膜输送到再生剂流动隔室(18,20)中。 可以电解和/或化学地进行抑制。 还可以使用浓缩塔。