Dissertation > Excellent graduate degree dissertation topics show

Study on Solid Phase Extraction-Gc Detection of Organochlorine and Chip-Capillary Electrophoresis of Metal Ions

Author: GengBinBin
Tutor: YangMingMin
School: Nanjing Agricultural College
Course: Applied Chemistry
Keywords: silid phase extraction organochlorine residues glass electrophoresis chip amperometric detection metal ions
CLC: X830.2
Type: Master's thesis
Year: 2009
Downloads: 26
Quote: 0
Read: Download Dissertation


Residue of pesticides found in agriculture products, drinking water and environmental exposure has raised much concern from the general public in recent years. In order to protect persons’ healthy, the maximum residue levels (MRL) in food were constituted by Codex Alimentarius Commission. It is important to study of pesticide residues analysis. While some metals including iron, copper, zinc are essential micronutrients and have a variety of biochemical functions in all living organisms. They can be toxic when taken in excess. So, the study of the detection of metal ions in samples is very important. The thesis includes two parts: In chapter I:Solid phase extraction-GC analysis of organochlorine residues in the soilA rapid and sensitive method has been developed for the detemination of organochlorine residues in the soil by solid phase extraction and gas chromatographic. The samples were saturated with acetone and hexane and extracted by ultrasonic. The aimed residues is cleaned up with florosil small columns. The extractives are analyzed with GC equipped with ECD. The recoveries of the organochlorine from soil were between85.8%~98.5%, RSD were between1.23%~4.65%. The method is simple, rapid, and could be applied to detect organochlorine residues in soil. In chapter II:Glass microchip capillary electrophoresis with amperometric detector for measurements of Mg2+、Pb2+andCa2+Mg2+、Pb2+and Ca2+can be separated and directed in separation channel made of glass with end-column amperometric detection at a carbon electrode was developed. Under the optimized experimental conditions, the linear range of Mg2+、Pb2+and Ca2+are100μmol/L~5mmol/L(0.9675);100μmol/L~8mmol/L(0.9857);100μmol/L~5mmol/L (0.9903), respectively. The limits of detection of Mg2+、Pb2+and Ca2+are estimated to be45、78and63μmol/L at S/N=3, Variances influencing the separation efficiency and amperometric response, including concentration and pH of buffer solution, injection time, separation voltage or detection potential are assessed and optimized. The method has been applied to the determination of the medicament sample with satisfactory result.

Related Dissertations

  1. Preparation and Properties of Highly Active Dietary Fiber and Carboxymethylcellulose from Gracilaria Residue,TS254.9
  2. The Removal of Heavy Metal Ions from Wastewater by Graphene/MnO2 Adsorbent,X703
  3. Spectra and Electrochemical Behavior with Analytical Application of Three Herocyclic Bis-Schiff Bases,O626
  4. Heavy metal ions on methane -oxidizing bacteria growth characteristics of,X172
  5. Separation of Phenolic Enviromental Endocrine in Wastewater on a PDMS Microchip,X832
  6. Research on Dendritic Fluorescent Probes for Heavy Metal Ions,O626
  7. Adsorption of Toxic Ions from Wastewater by Fe3O4 Nanoparticles,X703
  8. Preparation and Luminescence Properties of Sulfophosphate Glasses,TQ171.1
  9. Enrichment of low concentrations of heavy metal ions and its effects on urease activity,X832
  10. Thermal degradation and combustion characteristics of marine biomass fiber Retarding Mechanism,TQ352.1
  11. Functional Materials Modified Electrode and Its Application,TB34
  12. Electrochemical Behavior and Simultaneous Determination of Multi-Pollutants at BDD Electrode,X132
  13. Determination of Trace Heavy Metals with Polymer Film Modified Electrode by Electrochemical Polymerization,O657.1
  14. Detection of Trace Environmental Pollutant with Poly (Aromatic Diamine) Modified Glassy Carbon Electrode,X831
  15. The Study of Property and Behavior on Physical and Chemical of Single-walled Carbon Nanotubes in Environment by Spectroscopy,TB383.1
  16. The Application of Capillary Electrophoresis with Electrochemical Detection in Food and Chinese Herbal Medicine Analysis,O657.8
  17. Research on Novel Fluorescent Probes for Heavy Metal Ions Based on 1, 8-Naphthalimide,O625.63
  18. Synthesis of Hydrotalcite-like Compounds and Treatment Research of Wastewater Containig First Kind Heavy Metal Ions,X703
  19. Study and Application of Capillary Electrophoresis-Electrochemical Detection in Environmental Analysis,X830.2
  20. Research on the Application of Capillary Electrophoresis with Amperometric Detection in Food and Cosmetic Analysis,TQ658
  21. Study on Application of Capillary Electrophoresis with Amperometric Detection in Food and Cosmetic Analysis,O657.8

CLC: > Environmental science, safety science > Environmental Quality Assessment and Environmental Monitoring > Environmental monitoring > General issues > Monitoring and analysis methods
© 2012 www.DissertationTopic.Net  Mobile