Reconstructed ion current

Figure 5.3. GC-MS analysis of organic pollutants in a sample of natural water, (a) Total ion current chromatogram (b) reconstructed ion current chromatogram (c) mass chromatogram based on the ion m/z 149 current.

Fig. 2.11.17. APCI-LC-MS(+/-) reconstructed ion current chromatograms (RIC) and selected mass traces (di-NPEC homologue with nine EO units) of di-NPEC separation of compound as in Fig. 2.11.16 [22,61].

Fig. 2.11.21. (a) APCI-FIA-MS(—) and (d) APCI-LC-MS(—) reconstructed ion current chromatogram (RIC) and (b) and (c) selected mass traces of NPEO-SO4 (C9H19-C6H4-O-(CF -CHg-Olx-SOsH) column separation performed by RP-Clg gradient elution [15]. 

From the separation of a mixture of both compounds applying RP-Cis and ESI-MS(—), it was recognisable from mass trace analysis that the Ci2 derivative eluted first as shown in Fig. 2.11.36(c) and (d) [64]. The signals in the reconstructed ion current trace (e) contained the same ions at mtz 745 or 639 and at m/z 372 or 319 as also observed under ESI-FIA-MS(—) conditions. 

FIGURE 4 Mass spectra of a mixture of (5)-l,l -bi-2-naphthol-rf2 (Mr 288) and (f )-l,l -bi-2-naphthol (Mr 286) in the presence of tris(5-fluoro-2-methylphenylcarbamate) at scan numbers (a) 30-55, (b) 80-85, and (c) 140-145 in reconstructed ion current (RIC) profile, (d) The ratio of peak intensity versus scan number with (open circles) and without (solid circles) tris(5-fluoro-2-methylphenylcarbamate). (From Ref. 32.)... 

Figure 6. Reconstructed ion current LC/APCI/MS (positive ion) chromatogram of a mixture of 19 analytes (each 10 J.g/ml in water). l.MPA, 2. TDGO, 3. triethanolamine, 4. jV-methyldiethanolaminc, 5. EPA, 6. iV-ethyldietha-nolamine, 7. thiodiglycol sulfone, 8. 3-quinuclidinol, 9. EMPA, 10. TDG, 11. n-PrPA, 12. diisopropylaminoethanol, 13. EEPA, 14. r -PrMPA, 15. tert-BuPA, 16. w-BuPA, 17. cHexMPA, 18. Pin MPA, 19. benzilic acid. (Reprinted from Journal of Chromatography A, 759, R.M. Black and R.W. Read, Application of liquid chromatography-atmospheric pressure chemical ionisation mass spectrometry, and tandem mass spectrometry, to the analysis and identification of degradation products of chemical warfare agents, pp. 79-92 (1997), with permission from Elsevier)...

Figure 15.3. LC/ESI-MS SIM chromatograms of polycavernosides at m/z 821 (PB2), 833 (PA2), 847 (PA), and 861 (PA3) and a reconstructed ion current (RIC). (A) A volume of 10 pi of the standard mixture containing 50 pmol of PA, 25 pmol of PA2, and 75 pmol of PA3 and 125 pmol of PB2. (B) A volume of 10 pi of the semi-purified toxic fraction (total 0.6 ml) eluted from a Cosmosil 5C18-AR-ll column, obtained from the G. edulis. The ion intensity of the base peak 100% relative intensity was indicated in each mass chromatogram. The chromatographic condition was the same as that in Figure 1 5.2.

Fig. 6.8. Upper trace. Reconstructed ion current chromatogram showing the region of the chromatogram in which trans/transCLk methyi esters eiute.The iower traces sum the MS/MS abundance of the specified ions, and showciean resoiution of the four isomers, as noted.

Figure 5. Pyrolysis DIP>MS. (a) Pyroprobe Mass Maps (PyMM) of PBO fiber heated at 120 Cl min. to 1000 C, then residue pulsed at 1200 C/ 20 sec. (b) Reconstructed Ion Current (RIC) for selected ions m/z 76,103,128 (c) Total Ion Current (TIC) of volatile pyrolyzates from sample and from residue.

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