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Physical Sciences and Mathematics Commons

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Governors State University

Chromatography

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Full-Text Articles in Physical Sciences and Mathematics

Quantitative Analysis Of Acetylsalicylic Acid By Q-Nmr (Quantitative-Nuclear Magnetic Resonance Spectroscopy), Charles Flemming Jr. Oct 2016

Quantitative Analysis Of Acetylsalicylic Acid By Q-Nmr (Quantitative-Nuclear Magnetic Resonance Spectroscopy), Charles Flemming Jr.

All Student Theses

Quantitative analysis is an important step during pharmaceutical drug development. Currently, the pharmaceutical industry uses high performance liquid chromatography (HPLC) for quantitative analysis of organic compounds as the preferred technique. The proton nuclear magnetic resonance (NMR) technique has an inherent ability to quantify a given analyte and may be used to quantify organic compounds. Quantitative nuclear magnetic resonance spectroscopy (q-NMR) of acetylsalicylic acid (ASA) was conducted using tert-butyl alcohol (tert-butanol) as the internal standard and deuterated chloroform (CDCl3) as the solvent. Preparations of ASA solutions in low and high concentration ranges, 1.0 mM – 10.1 …


Method Development And Analysis For Pharmaceuticals And Personal Care Products In Surface Water, Victoria Ruelas Apr 2014

Method Development And Analysis For Pharmaceuticals And Personal Care Products In Surface Water, Victoria Ruelas

All Capstone Projects

Pharmaceuticals and Personal Care Products (PPCP) in surface waters is a worldwide concern. Effluent from waste water treatment plants have tested positive for PPCP. Method development for a liquid chromatographic method was derived using columns with fused core technology. Analysis of spiked samples as direct injection and after solid phase extraction indicated detection of acetaminophen, caffeine, bisphenol-A and triclosan. Confirmation of acetaminophen, caffeine, bisphenol-A and triclosan was achieved using Agilent 1100 HPLC with Agilent MST Trap XCT. Solid phase extraction using Oasis HLB indicated reproducibility at 0.05ppm.


Synthesis And Analysis Of N-Acetyltyrosine-N-Ethyl Amide From N-Acetyl Yyrosine Ethyl Ester, Ravinder Reddy Akkuluri Oct 2010

Synthesis And Analysis Of N-Acetyltyrosine-N-Ethyl Amide From N-Acetyl Yyrosine Ethyl Ester, Ravinder Reddy Akkuluri

All Capstone Projects

Amino acids gets oxidized when they are interacted with oxygen and light. And it is always difficult for the researchers to find and isolate a particular amino acid from a protein, unless they completely know how it behaves when interacted with light. For this we are synthesizing amide form of the amino acid which mimics the structure of a protein, and we induce light and find out the exact behavior of the particular amino acid. Here, the aim is to know the tyrosine interaction with light, so we synthesize amide form of tyrosine which is N-Acetyl tyrosine ethyl amide from …