CHEM 2364 : Study Study Study For Anayltcal Exam 2
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Question 2. (20 pts) provide a detailed block diagram for one of the following, and clearly. Choose only one. block diagram for an inductively-coupled plasma atomic emission spectrophotometer (icp-aes) block diagram of a flame atomic absorption spectrophotometer (aas) block diagram for a gas chromatography system (gc) block diagram for a high-performance liquid chromatography system (hplc) Flame aas monochromator flame detector readout sample wavelength selector light source hollow cathode lamp) Light source: for aas, the source of light is a hollow cathode lamp, which has a thin metal coating of the element of interest (such as copper, magnesium, iron, etc. ). The metal is ionized when a voltage is applied to the lamp, so that the ionized metal is present in the light path. photomultiplier tube computer. Sample: the sample is a liquid, which is sprayed into the gas stream that is burned as a flame. Flame: the sample is ionized in a flame, typically an acetylene burner.