Transcription of Basic Principles of Atomic Absorption and Atomic Emission ...
{{id}} {{{paragraph}}}
Example: biology
Basic Principles of Atomic Absorption and Atomic Emission ...
1 Basic Principles of Atomic Absorption and Atomic Emission Spectroscopy 2 Source Wavelength Selector Sample Detector Signal Processor Readout P Flame Atomic Emission Spectrometer 3 Flame Atomic Emission Spectrometer 4 Emission Techniques Type Method of Atomization Radiation Source Arc sample heated in an sample electric arc (4000-5000oC) Spark sample excited in a sample high voltage spark Flame sample solution sample aspirated into a flame (1700 3200 oC) Argon sample heated in an sample plasma argon plasma (4000-6000oC) 5 Flame and Plasma Emission Spectroscopy are based upon those particles that are electronically excited in the medium.
• Hollow cathode lamps normally operate at currents of 3-15 mA. • If the applied power is raised to several hundred mA, they exhibit a phenomenon called self-reversal. • This giant pulse of current changes the nature of the analyte absorption line so it will only measure the background absorbance. • A total
Loading..
Tags:
Information
Domain:
Source:
Link to this page:
Please notify us if you found a problem with this document: