Development of a Novel Mass Spectrometric ... - Jacobs University

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Results and Discussion Intens. [%] 100 50 [%] 0 100 50 [%] 0 100 50 [%] 0 100 50 [%] 0 100 50 [%] 0 100 50 0 414.9 380.9 448.8 414.8 474.3 358.1 498.6 527.5 230.9 576.5 200 300 400 500 600 700 800 m/z Figure 3-48 Fragmentation of high mass chlorinated components within the waste extract 3.4.7 Oxidative Degradation of Complex Mixture of Shredder Waste In an attempt to further achieve an insight about the structure composition of the unsaturated hydrocarbons within the content of the light shredder waste, oxidation of these hydrocarbon components within the waste sample was performed. This method was introduced in the literature in order to explore the composition of the UCM by changing the hydrocarbons to functionalized compounds described to be easily resolved and identified. Gough and Rowland used this oxidative degradation over UCM of hydrocarbons from lubricating oil feed stocks to characterize them. 17 After reacting the light shredder waste extract with chromium trioxide in acetic acid for six hours, the functionalised products were measured by mass spectrometry. This time ESI was also employed because the products of oxidative degradation were expected to be polar compounds such as carboxylic acids, ketones and lactones. The products of oxidation from the waste sample were 79
Results and Discussion injected into an APCI-MS as well as into the ESI-MS. Spectra of waste extract before and after oxidation were recorded. Figures 3-49 and 3-50 show the positive APCI mass spectra of the waste before and after oxidation respectively. Intens. [%] 100 411.4 +MS 80 60 329.3 561.6 40 663.5 20 0 250 300 350 400 450 500 550 600 650 m/z Figure 3-49 Positive APCI mass spectrum of waste sample before oxidation Intens. [%] 100 295.2 391.3 +MS 80 337.3 419.3 60 353.3 40 20 447.4 481.4 509.5 565.5 591.6 647.6 663.5 681.5 0 250 300 350 400 450 500 550 600 650 m/z Figure 3-50 Positive APCI mass spectrum of waste sample after oxidation 80
Page 1 and 2:
Development of a Novel Mass Spectro
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Declaration of Authorship I ,Nadim
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This work has been carried out unde
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Contents Contents Declaration of Au
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List of Figures List of Figures Fig
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List of Figures Figure 3-39 MS 2 fr
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List of Tables List of Tables Table
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Abbreviations Abbreviations APCI AP
Page 17 and 18:
Abbreviations UV VGOs VOCs VRs ultr
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Introduction Analytical chemistry h
Page 21 and 22:
Introduction 1.2 Presence and Fate
Page 23 and 24:
Introduction aliphatic hydrocarbons
Page 25 and 26:
Introduction Figure 1-1 Examples of
Page 27 and 28:
Introduction Figure 1-2 Range of io
Page 29 and 30:
Introduction fractions. 42 Another
Page 31 and 32:
Introduction 1.3.5 APLI Other crude
Page 33 and 34:
Introduction products). Other molec
Page 35 and 36:
Introduction Other studies performe
Page 37 and 38:
Introduction APLI-FT ICR-MS Crude o
Page 39 and 40:
Introduction spectrometry in as muc
Page 41 and 42:
Introduction catalytic processing t
Page 43 and 44:
Introduction Figure 1-6 Kendrick ma
Page 45 and 46: Introduction including determinatio
Page 47 and 48: Introduction 1.5 Scope and Signific
Page 49 and 50: Experimental e) Other model mixture
Page 51 and 52: Experimental 2.2.2 Preparation of O
Page 53 and 54: Experimental 2.4 Graphical Presenta
Page 55 and 56: Results and Discussion experiment.
Page 57 and 58: Results and Discussion Intens. [%]
Page 59 and 60: Results and Discussion common featu
Page 61 and 62: Results and Discussion 3.2 APCI-TOF
Page 63 and 64: Results and Discussion These compou
Page 67 and 68: Results and Discussion Ions were pr
Page 71 and 72: Results and Discussion procedure ba
Page 75 and 76: Results and Discussion to produce m
Page 77 and 78: Results and Discussion 519.5863 519
Page 79 and 80: Results and Discussion Higher mass
Page 87 and 88: Results and Discussion isolated fro
Page 93 and 94: Results and Discussion 3.4.5 Tandem
Page 95: Results and Discussion Intens. [%]
Page 101 and 102: Results and Discussion 3.4.8 Quanti
Page 103 and 104: Results and Discussion Int. x 10000
Page 105 and 106: Results and Discussion Table 3.6 Qu
Page 107 and 108: Results and Discussion assessment o
Page 109 and 110: Results and Discussion hydrocarbons
Page 117 and 118: Results and Discussion of n-alkanes
Page 119 and 120: Results and Discussion flow (in I2)
Page 121 and 122: Results and Discussion Other intere
Page 123 and 124: Results and Discussion Figure 3-80
Page 125 and 126: Results and Discussion KMD 2.4 2.2
Page 127 and 128: Results and Discussion KMD 1.1 1 Le
Page 129 and 130: Results and Discussion 3.6.4 Asphal
Page 131 and 132: Conclusions In conclusion we could
Page 133 and 134: References References 1. Fay, R. M.
Page 135 and 136: References 23. Colavecchia, M. V.,
Page 137 and 138: References 47. Dzidic, I., Petersen
Page 139 and 140: References Hydroconversion Processe
Page 141 and 142: References 91. Golovlev, V. V., All
Page 143 and 144: Appendix Light shredder waste Meas.
Page 145 and 146: 419.4592 C 30 H 59 419.4611 4.6 421
Page 147 and 148:
Liqui Moly car motor oil Meas. m/z
Page 149 and 150:
345.3511 C 25 H 45 345.3516 1.5 349
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