Chemical Instrumentation: A Systematic ApproachAddison-Wesley Publishing Company, 1973 - 903 pagine |
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Pagina 354
... excited states of ions and radicals can also be formed . The excited species so formed are always unstable , as Fig . 13.1 shows . They may lose energy by collision , by entering into a chemical reaction , by dissociation , or by ...
... excited states of ions and radicals can also be formed . The excited species so formed are always unstable , as Fig . 13.1 shows . They may lose energy by collision , by entering into a chemical reaction , by dissociation , or by ...
Pagina 419
... excited state species . Molecular fluorescence is a much more complex phenomenon than atomic fluorescence , which was discussed briefly in the last chapter . Two obvious factors are responsible . First , in molecules vibrational and ...
... excited state species . Molecular fluorescence is a much more complex phenomenon than atomic fluorescence , which was discussed briefly in the last chapter . Two obvious factors are responsible . First , in molecules vibrational and ...
Pagina 420
... ( excited ) and triplet state T1 . Processes shown are : 1 , absorption ; 2 , vibrational relaxation ( nonradiative ) ; 3 , fluorescence ; 4 and 7 , quenching ( nonradiative conversion of elec- tronic energy to heat ) ; 5 , intersystem ...
... ( excited ) and triplet state T1 . Processes shown are : 1 , absorption ; 2 , vibrational relaxation ( nonradiative ) ; 3 , fluorescence ; 4 and 7 , quenching ( nonradiative conversion of elec- tronic energy to heat ) ; 5 , intersystem ...
Sommario
Measurement and Instrumentation | 1 |
Basic Electrical Variables | 25 |
9 | 47 |
Copyright | |
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absorbance absorption amplitude analysis analyzer angle anode applied atoms beam Beer's law capacitance capacitor cathode cell circuit of Fig components concentration constant coulometry curve detection detector determined device diagram differential diode dispersion drop electrical electrode electrolysis emission emitter energy equation example excited feedback filter flame fluorescence frequency grating impedance incident input instrument intensity ionization ions magnetic measurement mercury meter method module molecular molecules monochromator noise obtained Ohm's law operational amplifier optical output voltage oxidation p-n junction peak phase photometer photomultiplier polarized polarography potential potentiometer precision prism proton pulse R₁ R₂ radiation range ratio RC circuit readout redox reduced refractive index resistance resistor resonance result sample scan schematic Section sensitivity shown in Fig signal slit solution species spectral spectrometer spectrophotometer Spectroscopy spectrum substance techniques temperature Thévenin equivalent titration transistor tube V₁ vibrational wave wavelength Wheatstone bridge width ΚΩ