Search for tag: "absorbance"
VEN123L Video 10.1 - Phenols and Color: Spectrophotometric AnalysisHow can a spectrophotometer be used to quantify phenols and characterize wine color? What are the contributors to wine color and how can they be chemically distinguished from one another?
From Thi Nguyen
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VEN123L Video 8.2 - Malic Acid: Enzymatic AnalysisHow can malic acid be quantified when tracking the progress of malolactic fermentation? What are some similarities and differences between the analyses of malic acid and residual sugar? What are the…
From Thi Nguyen
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VEN123L Video 8.1 - Residual Sugar - Enzymatic AnalysisHow do we know when we're really done with fermentation? How does enzymatic analysis work? What are the components of an enzymatic assay kit? Copyright Thi Nguyen Do not distribute without…
From Thi Nguyen
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VEN123L Video 6.1 - Copper - Flame Atomic Absorption SpectroscopyHow is atomic spectroscopy different from molecular spectrophotometry? What's going on inside an atomic spectrometer? How is copper analyzed by flame atomic absorption spectroscopy? Copyright…
From Thi Nguyen
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VEN123L Video 5.3 - Free Alpha-Amino Nitrogen - AnalysisHow do we prepare juice samples for the analysis of free alpha-amino nitrogen? How do we perform dilutions? How do we deal with sample background noise during spectrophotometric analysis? How do we…
From Thi Nguyen
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VEN123L Video 5.2 - Free Alpha-Amino Nitrogen - CalibrationWhat is calibration? How do we prepare standards for external calibration and how do we make a calibration curve? How do we give the spectrophotometer a baseline, to measure just what we're…
From Thi Nguyen
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