Principles of Instrumental AnalysisSaunders College Pub., 1998 - 849 pagine This text is written for a course that deals with the principles and applications of modern analytical instruments. Emphasis is placed upon the theoretical basis of each type of instrument, its optimal area of application, its sensitivity, its precision, and its limitations. The text also introduces students to elementary integrated circuitry, microprocessors and computers, and treatment of analytical data. |
Dall'interno del libro
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Pagina 504
... peak CH2Cl * 84 M + CH2C12 * 60 70 80 90 90 m / z ( a ) ( CH2 = OH * ) M - ( H2O ) Molecular ion peak 88 100 110 20 20 30 40 50 60 70 80 90 100 110 120 m / z ( b ) lyte . Thus , molecular ion peaks are observed at 84 for methylene ...
... peak CH2Cl * 84 M + CH2C12 * 60 70 80 90 90 m / z ( a ) ( CH2 = OH * ) M - ( H2O ) Molecular ion peak 88 100 110 20 20 30 40 50 60 70 80 90 100 110 120 m / z ( b ) lyte . Thus , molecular ion peaks are observed at 84 for methylene ...
Pagina 525
... peak . Caution is therefore always advis- able , particularly with electron - impact sources , where the molecular ion peak may be absent or small relative to impurity peaks . When there is doubt , additional spec- tra by chemical ...
... peak . Caution is therefore always advis- able , particularly with electron - impact sources , where the molecular ion peak may be absent or small relative to impurity peaks . When there is doubt , additional spec- tra by chemical ...
Pagina 696
... peak areas . If such equipment is not available , a manual estimate must be made . A sim- ple method , which works well for symmetric peaks of reasonable widths , is to multiply the height of the peak by its width at one half the peak ...
... peak areas . If such equipment is not available , a manual estimate must be made . A sim- ple method , which works well for symmetric peaks of reasonable widths , is to multiply the height of the peak by its width at one half the peak ...
Sommario
Contents CHAPTER 1 Introduction | 1 |
1D Selecting an Analytical Method | 11 |
1F Questions and Problems | 18 |
Copyright | |
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absorbance absorption acid amplifier Anal analysis analyte anode applications atomic band beam Beer's law Calculate capillary carbon cathode cell Chem chemical chro chromatography circuit column components compounds concentration constant coulometric curve detection detector determination device difference elec electrical elements emission energy Equation example excited filter flow fluorescence Fourier transform frequency function gas chromatography hydrogen infrared input instruments ionization ions iron(III laser lines liquid magnetic mass spectrometry measurements metal methods mobile phase molecular molecules monochromator operational amplifier optical output oxidation peak photomultiplier plasma polarization polarography protons pulse quantitative radiation Raman Raman spectroscopy range ratio reaction reagent region relative sample scan Section shown in Figure signal slit solution solvent species spectra spectrometer spectrophotometers spectroscopy spectrum standard deviation supercritical fluid surface technique temperature thermal tion titration transducer tube typical ultraviolet vibrational voltage wavelength wavenumber Wiley X-ray