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

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Results and Discussion Intens. [%] 100 327.0 +MS 2 (328) 80 60 Ag 106.8 40 20 0 346.7 126.9 242.9 271.0 299.1 158.8 188.9 214.8 364.7 50 100 150 200 250 300 350 400 450 500 m/z Figure 3-45 APCI-MS 2 of a silver adducted complex at m/z 328 ion 3.4.6 Tandem MS of PCBs Tandem MS experiments were performed for the PCBs that appeared in the negative mode mass spectrum of the waste sample. Similarly, in advance, PCBs from the Congener standard mix were fragmented. (M-Cl+O) – ions from the two aforementioned sources were selected and isolated with an isolation width of 0.5 Da and each PCB was subjected to Collision Induced Dissociation (CID). All ions of different PCBs from both samples suggested a loss of chlorine upon fragmentation (see figure 3-46 and 3-47). It was noticed that the PCBs are less liable to fragment. This is also reported for the fragmentation of PCBs. 111,112 In all cases the MS 2 of the selected PCBs within the standard mix were found identical to those native in waste sample. Similar to the high mass n-alkane species in some waste samples, high mass chlorinated compounds demonstrated the production of very weak or no fragments upon fragmentation. Figure 3-48 shows the MS 2 spectra of the high mass chlorinated components. This can be attributed to the low abundance of these components as well as their insufficiency to provide a detailed fragmentation pattern. 77
Results and Discussion Intens. [%] 100 75 50 25 0 [%] 100 75 50 25 [%] 0 100 75 50 25 270.6 304.7 304.6 338.7 338.6 374.6 -MS 2 (306) -MS 2 (340) -MS 2 (374) 0 100 150 200 250 300 350 400 450 500 m/z Figure 3-46 Fragmentation of selected PCBs at m/z 306, 340 and 374 from the PCBs Congener Mix Intens. [%] 100 75 50 25 0 [%] 270.7 304.8 -MS 2 (306) -MS 2 (340) 100 338.7 75 50 25 304.7 0 [%] -MS 2 (374) 100 372.7 75 50 338.8 25 0 100 150 200 250 300 350 400 450 500 m/z Figure 3-47 Fragmentation of selected PCBs at m/z 306, 340 and 374 from the waste sample 78
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
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Abbreviations UV VGOs VOCs VRs ultr
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Introduction Analytical chemistry h
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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: Results and Discussion 3.4.5 Tandem
Page 97 and 98: Results and Discussion injected int
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.
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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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