Dissertation > Excellent graduate degree dissertation topics show

Study on the Determination and Migration of Hazardous Chemicals in Polyethylene Plastic Food Packaging Materials

Author: LiBo
Tutor: LinQinBao;SongHuan
School: Shanxi University
Course: Of Food Science
Keywords: Food contact materials Plastic Polyethylene Ultra performance liquid chromatography (UPLC) Inductively coupled plasma atomic emission spectrometry (ICP-AES) Inductively coupled plasma mass spectrometry (ICP-MS) Food simulants Migration
CLC: TS206.4
Type: Master's thesis
Year: 2011
Downloads: 70
Quote: 0
Read: Download Dissertation


Chapter 1:The problems of food and plastic food packages safety, the factors caused these problems, and the regulations related to Plastic Food Packaging Materials in different countries, as well as the advances in this field have been reviewed, on the basis of these reviews, our own research content and the creativity were put forward.Chapter 2:A rapid method of extracting antioxidants (BHA, BHT, BPA, Ionox100, AO425, Irganox1010, Irganox1076), ultraviolet absorbents (UV-0, UV-9, UV-P, UV-24, UV-234, UV-326, UV-327, UV-531) and fire retardants (Hexabromobiphenyl, Decabromodiphenyl oxide) from PE film with acetonitrile by ultrasonic extraction (USE) and determined by ultra performance liquid chromatography (UPLC) coupled with photodiode array (PDA) detector has been developed. Different extraction solvents were compared, the best extraction solvent and the least volume has been confirmed. On the basis of the optimized gradient elution and confirmed solution for determination.Chapter 3:A method of determining Titanium (Ti), Lead (Pb), Chromium (Cr), Cadmium (Cd) in PE film for food packaging by microwave digestion and inductively coupled plasma atomic emission spectrometry (ICP-AES) has been developed. Different digestion acid mixtures, digestion temperature and time were investigated. The best ICP-AES operating condition has been confirmed. The procedure developed has been applied to determination of the metal elements in three commercial plastic food packages.Chapter 4:A confirmatory and sensitive method of microwave digestion coupled with inductively coupled plasma atomic emission spectrometry (ICP-AES) or inductively coupled plasma mass spectrometry (ICP-MS) determination for silver (Ag) in nano-PE plastic food packaging has been developed. The limit of detection, accuracy and precision of the two analytical methods were compared, matrix effect was evaluated. The procedure developed has been applied to determination of the Ag in commercial nano-plastic food packages.Chapter 5:A method of extracting Ag from two food simulants (3%(w/v) aqueous acetic and 95%(v/v) aqueous ethanol) by evaporating and determining by ICP-MS has been developed. The procedure developed has been applied to determine the migration of Ag from nano-PE plastic food package into the two food simulants under different temperatures and times.

Related Dissertations

  1. Growth Pattern of Marsupenaeus Japonicus and Succesion of Plankton Community in Intensive Model,S968.22
  2. The Historical Investigate of Gu Tian Reservoir Region Migration,D632.4
  3. Trajectory Analysis of Wheat Aphids During Long-distance Migration Using HYSPLIT Model,S433
  4. Tracking the Source Regions of Southern Rice Black-Streaked Dwarf Virus Transmitted by Sogatella Furcifera (Horváth) in Zhejiang, Jiangxi and Anhui,S435.112.3
  5. Effects of Isoprocarb Exposure on Differentiation, Migration and Neurite Outgrowth of the Key Cell During Neural Development in Vitro,R329
  6. Role of G31P in Smooth Muscle Migration of A7r5 Cells Induced by Interleukin-8,R363
  7. Study on the Determination and Migration of Harmful Chemicals in Paper Food Packaging Materials,TS206.4
  8. Effects of ROCKⅠon Migration of Vascular Smooth Muscle Cells Induced by PDGF,R363
  9. Down-regulation of ROCK Isoforms on Migration and Proliferation of Vascular Smooth Muscle Cells Stimulated by PDGF,R363
  10. VEGF-induced neuronal differentiation into mesenchymal stem cells migration research,R329
  11. Experimental Study on Effect of Water Surface Accumulation Driven by Freeze-thaw Action of Two Types of Wetland Soil in Sanjiang Plain,S152
  12. A Realization of Financial IC Card Issue Platform Based on Asymmetric Algorithm,F832.2
  13. Research on Security Model for Mobile Agent-Based E-Commerce Environment,TP393.08
  14. Disposal of Dynamic Modification in Workflow,TP311.52
  15. Effect of STAT1-shRNA-mediated Gene Silencing on Biological Characteristics in the Cervical Cancer Cell Line Hela,R737.33
  16. Tile data recording disk drive technology research organization and its implementation,TP333.35
  17. Based on logical hierarchical storage system design and implementation,TP333
  18. Parallel Virtual Machine domain communication system,TP302
  19. Grape skin extract inhibition mechanism of breast cancer metastasis,R737.9
  20. Navigation applications for handheld UHF RFID reader design and implementation,TP391.44

CLC: > Industrial Technology > Light industry,handicrafts > Food Industry > General issues > Food Packaging > Packaging materials
© 2012 www.DissertationTopic.Net  Mobile