Electrolytic method and apparatus for trace metal analysis
    1.
    发明授权
    Electrolytic method and apparatus for trace metal analysis 失效
    用于痕量金属分析的电解方法和装置

    公开(公告)号:US07387720B2

    公开(公告)日:2008-06-17

    申请号:US10836913

    申请日:2004-04-30

    Inventor: Harmesh K. Saini

    CPC classification number: G01N33/20

    Abstract: An electrolytic method and apparatus for treating a solution sample allowing for the accurate and substantially real-time and on-line analysis of trace contaminants in the solution sample. The method of the present invention includes two stages. The solution sample is electrolyzed during a first stage to decompose the matrix, thereby substantially neutralizing the matrix, while during a second stage deposited or precipitated metals are recovered and/or stabilized in solution. An apparatus for carrying out the method is also disclosed.

    Abstract translation: 一种用于处理溶液样品的电解方法和设备,其允许对溶液样品中痕量污染物的准确且基本的实时和在线分析。 本发明的方法包括两个阶段。 溶液样品在第一阶段被电解以分解基质,从而基本上中和基质,而在第二阶段沉积或沉淀的金属在溶液中回收和/或稳定化。 还公开了一种用于执行该方法的装置。

    Methods and Apparatus for Determination of Halohydrocarbons
    2.
    发明申请
    Methods and Apparatus for Determination of Halohydrocarbons 有权
    用于测定卤代烃的方法和装置

    公开(公告)号:US20130029427A1

    公开(公告)日:2013-01-31

    申请号:US13640312

    申请日:2011-04-14

    Abstract: A real-time, on-line method and analytical system for determining halohydrocarbons in water which operate by (1) extracting on-line samples; (2) purging volatile halohydrocarbons from the water (e.g., with air or nitrogen); (3) carrying the purge gas containing the analytes of interest over a porous surface where the analytes are adsorbed; (4) recovering the analytes from the porous surface with heat (thermal desorption) or solvent (solvent elution) to drive the analytes into an organic chemical mixture; (5) generating an optical change (e.g., color change) in dependence upon a reaction involving the analytes and a pyridine derivative; and (6) measuring optical characteristics associated with the reaction to quantify the volatile halogenated hydrocarbon concentration.

    Abstract translation: 一种用于测定水中卤代烃的实时在线方法和分析系统,其操作为(1)提取在线样品; (2)从水中(例如用空气或氮气)吹扫挥发性卤代烃; (3)在分析物被吸附的多孔表面上携带含有感兴趣分析物的吹扫气体; (4)用热(热解吸)或溶剂(溶剂洗脱)从多孔表面回收分析物,以将分析物驱动到有机化学混合物中; (5)根据涉及分析物的反应和吡啶衍生物产生光学变化(例如,颜色变化); 和(6)测量与反应相关的光学特性以量化挥发性卤代烃浓度。

    MODULE FOR AUTOMATED MATRIX REMOVAL IN ACIDIC PLATING SOLUTIONS
    3.
    发明申请
    MODULE FOR AUTOMATED MATRIX REMOVAL IN ACIDIC PLATING SOLUTIONS 审中-公开
    酸性溶液中自动基质去除模块

    公开(公告)号:US20090068749A1

    公开(公告)日:2009-03-12

    申请号:US12205617

    申请日:2008-09-05

    Inventor: Harmesh K. Saini

    CPC classification number: G01N33/20

    Abstract: In accordance with the present invention, an organic additive is characterized in the presence of an acidic metal plating matrix in a metal plating solution by: providing a sample from the metal plating solution; activating a metal-complexing resin with a weak acid to provide an activated metal-complexing resin; eluting the sample through the activated metal-complexing resin to form a treated sample in which a concentration of the acidic metal plating matrix is reduced; and determining a concentration of an organic additive in the metal plating solution by analyzing the treated sample.

    Abstract translation: 根据本发明,有机添加剂的特征在于在金属电镀溶液中存在酸性金属电镀基质,方法是从金属电镀溶液提供样品; 用弱酸活化金属络合树脂以提供活化的金属络合树脂; 通过活化的金属络合树脂洗脱样品以形成其中酸性金属电镀基质的浓度降低的处理样品; 以及通过分析所述处理过的样品来确定所述金属电镀溶液中的有机添加剂的浓度。

    Method and apparatus for determination of haloacetic acid (“HAA”) presence in aqueous solution
    4.
    发明授权
    Method and apparatus for determination of haloacetic acid (“HAA”) presence in aqueous solution 有权
    在水溶液中测定卤代乙酸(“HAA”)的方法和装置

    公开(公告)号:US09222921B2

    公开(公告)日:2015-12-29

    申请号:US14116764

    申请日:2012-05-07

    Inventor: Harmesh K. Saini

    Abstract: A real-time method and analytical system for determining haloacetic acids in water which operate by: (1) extracting samples on ion-exchange absorbent medium; (2) concentrating haloacetic acids on hyper-crosslinked medium; (3) eluting the analytes from the concentration medium for injection into an HPLC system; (4) separating individual haloacetic acid in reverse-phase chromatography performed by the HPLC system; and (5) measuring optical characteristics (UV-absorbance) of haloacetic acids, to determine concentration. The entire process can be performed using a completely self-contained, in-situ mechanism that sits at a water distribution point for 24/7 testing, with automated control, monitoring, reporting, and employment of remedial measures (e.g., automated adjustment of the water treatment process).

    Abstract translation: 一种用于测定水中卤代乙酸的实时方法和分析系统,其操作为:(1)在离子交换吸收介质上提取样品; (2)将卤代乙酸浓缩在超交联介质上; (3)将分析物从浓缩介质中洗脱,注入HPLC系统; (4)在通过HPLC系统进行的反相色谱中分离单独的卤代乙酸; 和(5)测量卤代乙酸的光学特性(UV吸光度),以确定浓度。 整个过程可以使用完全独立的原位机制进行,该机制位于配水点进行全天候测试,具有自动控制,监测,报告和使用补救措施(例如,自动调整 水处理工艺)。

    Analysis of metals in acidic solutions
    5.
    发明授权
    Analysis of metals in acidic solutions 失效
    分析酸性溶液中的金属

    公开(公告)号:US07297547B2

    公开(公告)日:2007-11-20

    申请号:US11178857

    申请日:2005-07-11

    Inventor: Harmesh K. Saini

    Abstract: In one embodiment, a method of neutralizing the matrix of an acidic solution including at least one metal using a weak anion exchange resin is provided. The method includes the acts of: activating the weak anion exchange resin with a weakly acidic metal complexing reagent, the weakly acidic metal complexing reagent partially disassociating into protons and metal complexing anions, whereby some functional groups in the weak anion exchange resin are protonated and bind with the metal complexing anions; and neutralizing a sample of the acidic solution with the activated weak anion exchange resin.

    Abstract translation: 在一个实施方案中,提供了使用弱阴离子交换树脂中和包含至少一种金属的酸性溶液的基质的方法。 该方法包括:用弱酸性金属配位试剂活化弱阴离子交换树脂,弱酸性金属络合试剂部分分解成质子和金属络合阴离子,由此弱阴离子交换树脂中的一些官能团被质子化并结合 与金属络合阴离子; 并用活化的弱阴离子交换树脂中和酸性溶液样品。

    "> Techniques for determination of haloacetic acid (
    6.
    发明申请
    Techniques for determination of haloacetic acid ("HAA") presence in aqueous solution 有权
    在水溶液中测定卤代乙酸(“HAA”)的技术

    公开(公告)号:US20160169847A1

    公开(公告)日:2016-06-16

    申请号:US14944836

    申请日:2015-11-18

    Inventor: Harmesh K. Saini

    Abstract: A real-time method and analytical system for determining haloacetic acids in water which operate by: (1) extracting samples on ion-exchange absorbent medium; (2) concentrating haloacetic acids on hyper-crosslinked medium; (3) eluting the analytes from the concentration medium for injection into an HPLC system; (4) separating individual haloacetic acid in reverse-phase chromatography performed by the HPLC system; and (5) measuring optical characteristics (UV-absorbance) of haloacetic acids, to determine concentration. The entire process can be performed using a completely self-contained, in-situ mechanism that sits at a water distribution point for 24/7 testing, with automated control, monitoring, reporting, and employment of remedial measures (e.g., automated adjustment of the water treatment process).

    Abstract translation: 一种用于测定水中卤代乙酸的实时方法和分析系统,其操作为:(1)在离子交换吸收介质上提取样品; (2)将卤代乙酸浓缩在超交联介质上; (3)将分析物从浓缩介质中洗脱,注入HPLC系统; (4)在通过HPLC系统进行的反相色谱中分离单独的卤代乙酸; 和(5)测量卤代乙酸的光学特性(UV吸光度),以确定浓度。 整个过程可以使用完全独立的原位机制进行,该机制位于配水点进行全天候测试,具有自动控制,监测,报告和使用补救措施(例如,自动调整 水处理工艺)。

    Methods and apparatus for determination of halohydrocarbons
    7.
    发明授权
    Methods and apparatus for determination of halohydrocarbons 有权
    用于测定卤代烃的方法和装置

    公开(公告)号:US09134290B2

    公开(公告)日:2015-09-15

    申请号:US13640312

    申请日:2011-04-14

    Abstract: A real-time, on-line method and analytical system for determining halohydrocarbons in water which operate by (1) extracting on-line samples; (2) purging volatile halohydrocarbons from the water (e.g., with air or nitrogen); (3) carrying the purge gas containing the analytes of interest over a porous surface where the analytes are adsorbed; (4) recovering the analytes from the porous surface with heat (thermal desorption) or solvent (solvent elution) to drive the analytes into an organic chemical mixture; (5) generating an optical change (e.g., color change) in dependence upon a reaction involving the analytes and a pyridine derivative; and (6) measuring optical characteristics associated with the reaction to quantify the volatile halogenated hydrocarbon concentration.

    Abstract translation: 一种用于测定水中卤代烃的实时在线方法和分析系统,其操作为(1)提取在线样品; (2)从水中(例如用空气或氮气)吹扫挥发性卤代烃; (3)在分析物被吸附的多孔表面上携带含有感兴趣分析物的吹扫气体; (4)用热(热解吸)或溶剂(溶剂洗脱)从多孔表面回收分析物,以将分析物驱使到有机化学混合物中; (5)根据涉及分析物的反应和吡啶衍生物产生光学变化(例如,颜色变化); 和(6)测量与反应相关的光学特性以量化挥发性卤代烃浓度。

    DETECTION OF SILICA SPECIES IN HOT PHOSPHORIC ACID
    8.
    发明申请
    DETECTION OF SILICA SPECIES IN HOT PHOSPHORIC ACID 审中-公开
    在高温磷酸中检测二氧化硅物质

    公开(公告)号:US20090189068A1

    公开(公告)日:2009-07-30

    申请号:US12245587

    申请日:2008-10-03

    Inventor: Harmesh K. Saini

    CPC classification number: B01J41/07 B01J2220/54

    Abstract: In one embodiment, a method of analyzing silica species in a phosphoric acid solution includes the acts of: processing a sample of the phosphoric acid solution through an anion exchange resin to provide a processed sample; and analyzing the processed sample to determine a concentration of at least one silica species in the phosphoric acid solution.

    Abstract translation: 在一个实施方案中,分析磷酸溶液中二氧化硅物质的方法包括以下作用:通过阴离子交换树脂处理磷酸溶液样品以提供经处理的样品; 并分析经处理的样品以确定磷酸溶液中至少一种二氧化硅物质的浓度。

    Electrodialysis method and apparatus for trace metal analysis
    9.
    发明授权
    Electrodialysis method and apparatus for trace metal analysis 失效
    电渗析法和痕量金属分析装置

    公开(公告)号:US07144735B2

    公开(公告)日:2006-12-05

    申请号:US10655966

    申请日:2003-09-05

    Inventor: Harmesh K. Saini

    Abstract: An electrodialysis method and apparatus are provided for treating a sample including trace metals in a matrix. Advantageously, the present invention allows for highly accurate detection of trace contaminants in a solution sample, in particular trace metals, substantially in real-time and on-line. The present invention includes flowing a carrier solution through a carrier solution channel separated from a sample channel by a membrane. A component of the carrier solution is diffused through the membrane into the sample channel to stabilize trace metals in the solution sample for subsequent analysis. Simultaneously, the matrix is eliminated, neutralized, and/or modified for enhanced analysis.

    Abstract translation: 提供电渗析方法和装置,用于处理包含基质中痕量金属的样品。 有利地,本发明允许基本上实时和在线地高效精确地检测溶液样品中的痕量污染物,特别是痕量金属。 本发明包括使载体溶液流过通过膜从样品通道分离的载体溶液通道。 载体溶液的成分通过膜扩散到样品通道中,以稳定溶液样品中的痕量金属,用于后续分析。 同时,消除,中和和/或修饰基质以进行增强的分析。

Patent Agency Ranking