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Dispersive vs. FTIR Instruments

Dispersive vs. FTIR Instruments Chapter 17: Applications of Infrared Chapter 17: Applications of Infrared SpectroscopySpectroscopyRead: pp. 404-421 Problems: noneStructural identification of molecules + quantitative information!Identification of Structural FeaturesIdentification of Structural FeaturesQuantitative InformationQuantitative InformationA = bC= log Psolvent/PsolutionWider slit widths leads to wider bandwidths. This results in nonlinear Beer s Law behaviorSample HandlingSample Handling Solvents= water and alcohol are seldom used as they absorb strongly and attack cell window materials.

Raman signals are inherently weak, especially when using visible light excitation and so a low number of scattered photons are available for detection. One method to amplify weak Raman signals is to employ surface-enhanced Raman scattering (SERS). SERS uses nanoscale roughened metal surfaces typically made of gold (Au) or silver (Ag).

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mayoral.iae-csic.org

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Weak instruments asymptotics. Weak instrument asymptotics is the name for asymptotic embedding modeling correlation as converging to zero at speed p T:It is the same as modeling being constant. So, assume that ˇ= C= p T. Then ( + ^ z. TSLS 0) v) 0. z. u; ( + z. v) 0

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