Analytical Chemistry: An IntroductionSaunders College Pub., 1994 - 675 pagine |
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Pagina 445
... fluorescence wavelengths are identical . Note also that molecular fluorescence bands are made up largely of lines that have longer wavelengths and thus lower energies than the band of absorbed radiation responsible for their excitation ...
... fluorescence wavelengths are identical . Note also that molecular fluorescence bands are made up largely of lines that have longer wavelengths and thus lower energies than the band of absorbed radiation responsible for their excitation ...
Pagina 446
... Fluorescence and Structure Compounds containing aromatic rings give the most intense and most useful molecular fluorescent emission . While certain aliphatic and alicyclic carbonyl compounds as well as highly conjugated double - bonded ...
... Fluorescence and Structure Compounds containing aromatic rings give the most intense and most useful molecular fluorescent emission . While certain aliphatic and alicyclic carbonyl compounds as well as highly conjugated double - bonded ...
Pagina 448
... fluorescence . 120 100 23C FLUORESCENCE INSTRUMENTS Figure 23-8 shows a typical configuration for the components of fluorometers ... Fluorescence Spectroscopy Chapter 23 23C Fluorescence Instruments 23D Applications of Fluorescence Methods.
... fluorescence . 120 100 23C FLUORESCENCE INSTRUMENTS Figure 23-8 shows a typical configuration for the components of fluorometers ... Fluorescence Spectroscopy Chapter 23 23C Fluorescence Instruments 23D Applications of Fluorescence Methods.
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absorbance absorption acid activity added addition amount analysis analyte applications approximately atomic base becomes buffer Calculate carbonate cations cause cell charge chemical chloride chromatography color column complex compounds concentration consider constant containing curve described determination difference dilute dissociation dissolved EDTA effect electrode electrode potential electrolyte end point Equation equilibrium equivalence error example excess expression Figure filter formation give given glass H₂O H3O+ hydrogen hydroxide increase indicator involves less liquid mass mean measurements metal method mmol molar NaOH needed Note obtained occurs organic oxidation particles positive potassium potential precipitate prepared quantity radiation range reaction reagent reduced reference relative salt sample shown shows silver sodium solid solubility solution species standard standard deviation strong surface Table temperature tion titration types volume weighed write