Wireless Spectrometer Spencer R. Adelberg Chemistry Teacher Plainview-Old Bethpage JFK High School
THEN
NOW
Pasco Wireless Spectrometer • Wireless spectrometer at an affordable price • Chemistry • Biology • Physics • How it works? • Light from the LED-boosted tungsten light source passes through the solution and a high quality diffraction grating. • The CCD array detects the light for collection and analysis
Advantages • Bluetooth and USB connectivity enables use with tablets and computers • Can measure: • Intensity • Absorbance • Transmittance • Fluorescence
Free Software • Available for Windows and Mac computers • Free Apps for IOS devices and Android tablets • Free software walks you through the process of calibration, performing a full spectrum scan, determining optimum wavelength for study, and concentration and kinetics experiments
Software Applications • Analyze a solution in terms of: • Intensity vs. Wavelength • Absorbance, Transmittance, and/or Fluorescence vs. Wavelength • Analyze a solution’s concentration • Analyze a solution’s reaction over time
Instructional Videos • https://www.youtube.com/watch?v=i5BexMng2WY • https://www.youtube.com/watch?v=in1peV-lp1g • https://www.youtube.com/watch?v=49F3yj_3GVY
3 Sample Lab Activities • Beer’s Law • Kinetics • Percent Copper
Chemistry Labs • Emission Spectra of Light • Absorbance and Transmittance Spectra • Beer’s Law: Concentration and Absorbance • Kinetics of a Chemical Reaction • Fluorescence
Biology Labs • Photosynthesis • Absorbance Spectra of Plant Pigments • Concentration of Proteins in Solution • Rate of Enzyme-Catalyzed Reactions • Growth of Cell Cultures
Physics Labs • Light Intensity Across Visible Spectrum • Emission Spectra of Light Sources • Match Known Spectra with References
Fiber Optic Cable • Allows you to perform emissions spectroscopy experiments • Software includes some known emissions spectra
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