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Secondary chemical equilibria in cap...
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Wright, Paul Baxter.
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Secondary chemical equilibria in capillary electrophoresis: Argentation electrophoresis and related techniques.
紀錄類型:
書目-電子資源 : Monograph/item
正題名/作者:
Secondary chemical equilibria in capillary electrophoresis: Argentation electrophoresis and related techniques./
作者:
Wright, Paul Baxter.
出版者:
Ann Arbor : ProQuest Dissertations & Theses, : 1996,
面頁冊數:
361 p.
附註:
Source: Dissertation Abstracts International, Volume: 57-06, Section: B, page: 3706.
Contained By:
Dissertation Abstracts International57-06B.
標題:
Analytical chemistry. -
電子資源:
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9634203
Secondary chemical equilibria in capillary electrophoresis: Argentation electrophoresis and related techniques.
Wright, Paul Baxter.
Secondary chemical equilibria in capillary electrophoresis: Argentation electrophoresis and related techniques.
- Ann Arbor : ProQuest Dissertations & Theses, 1996 - 361 p.
Source: Dissertation Abstracts International, Volume: 57-06, Section: B, page: 3706.
Thesis (Ph.D.)--University of Cincinnati, 1996.
The goal of this research is to learn about the chemistry of separation processes and then apply that knowledge and understanding toward the solution of important practical problems, as well as the theoretical and chemical problems affecting the separation. Motivated by the limitations of existing techniques and the unique chemical separation problems that exist in capillary electrophoresis (CE), this research has investigated and developed new separation methods based on secondary chemical equilibria.Subjects--Topical Terms:
3168300
Analytical chemistry.
Secondary chemical equilibria in capillary electrophoresis: Argentation electrophoresis and related techniques.
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Thesis (Ph.D.)--University of Cincinnati, 1996.
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The goal of this research is to learn about the chemistry of separation processes and then apply that knowledge and understanding toward the solution of important practical problems, as well as the theoretical and chemical problems affecting the separation. Motivated by the limitations of existing techniques and the unique chemical separation problems that exist in capillary electrophoresis (CE), this research has investigated and developed new separation methods based on secondary chemical equilibria.
520
$a
Most of this research has utilized a "technology transfer" of chromatographic methodology to the capillary format of CE. In particular, the invocation of secondary chemical equilibria, in the form of silver ion complexation, has been investigated for its potential use in CE separations. Metal ion complexation has been used extensively in chromatography, but this research represents the first application of the use of Ag(I) complexation as a form of secondary chemical equilibria in capillary electrophoresis, and is termed "argentation electrophoresis".
520
$a
The use of Ag(I) as a buffer additive in CE has been investigated for separations of specific types of compounds that can form complexes with Ag(I). Argentation electrophoresis in the aqueous CZE mode of capillary electrophoresis has been applied toward the separation of a variety of sulfonamides, as well as N-containing heterocyclic compounds. Invocation of secondary chemical equilibria of the type is shown to be very effective for manipulating selectivity in CZE, thereby achieving separation of neutral compounds that cannot be separated by CZE without secondary chemical equilibria processes.
520
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The effect of the addition of Ag(I) to micellar solutions has also been investigated. Argentation micellar electrokinetic chromatography has been applied toward the separation of sulfonamides, S-containing heterocyclic compounds, and vitamins D$\sb2$ and D$\sb3$ which can be difficult to separate by both liquid chromatography and conventional MEKC. The investigation and use of Ag(I) as an additive in MEKC, as an additional form of secondary chemical equilibria, is a beneficial way to manipulate selectivity.
520
$a
As well as utilizing metal ion complexation, another form of secondary chemical equilibria was investigated for its potential use in achieving electrokinetic separations. The technique employs the use of charged colloidal particles, that possess a selective surface for analyte interaction. The separation, in this electrokinetic chromatography mode, is based on the differences in distribution equilibrium constants for the analytes of interest.
520
$a
Nonaqueous media for capillary electrophoresis was also studied; Secondary chemical equilibria in nonaqueous solvents provides a basis for separation. The use of organic solvents are of interest in capillary electrophoresis for several reasons, most notably for the enhancement of solubility of hydrophobic analytes.
520
$a
Initial discussions of the determination of formation constants by capillary electrophoresis are provided. However, the determination of formation constants by CE is not a trivial matter. Some ways to calculate these values are proposed. Many factors need to be considered if the goal is to obtain physico-chemical information from a capillary electrophoresis experiment. (Abstract shortened by UMI.).
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