Atomic Absorption Spectroscopy Worksheet !free! Jun 2026

a) Increase the intensity of the lamp b) Distinguish atomic absorption from flame emission c) Reduce the bandwidth of the monochromator d) Allow the use of a continuum source

Instructions: Solve each problem step-by-step. Use the Beer-Lambert law and standard calibration methods. atomic absorption spectroscopy worksheet

= Molar absorptivity (how strongly the element absorbs light) a) Increase the intensity of the lamp b)

To correct for background absorption due to molecular species or particulates, an AAS instrument may use a lamp or the Smith-Hieftje method. | Component | Function | |-----------|----------| | 9

| Component | Function | |-----------|----------| | 9. Hollow cathode lamp | A. Separates the analytical wavelength from other emission lines | | 10. Nebulizer | B. Converts the sample into a fine aerosol for introduction into flame | | 11. Monochromator (grating) | C. Emits sharp atomic lines specific to the element of interest | | 12. Photomultiplier tube (PMT) | D. Converts light signal into an electrical current | | 13. Burner head | E. Supports the flame and maintains a stable optical path length |

In AAS, a sample is first atomized, and then a beam of light is passed through the atomic vapor. The atoms in the vapor absorb light at specific wavelengths, which correspond to the energy levels of the atoms. The amount of light absorbed is measured, and the concentration of the analyte is calculated based on the absorption.

State the mathematical relationship used in AAS to relate absorbance ( ) to concentration ( ). What does each variable represent? Selectivity: