AAS

Question 1

Atomic Absorption Spectroscopy

Answer 1

Used to measure the concentration of a particular element in the sample to be analysed

Question 2

Hollow Cathode Light

Answer 2

• Produces source of light used for absorption
• Light produced corresponds to element being measure

Question 3

Nebuliser

Answer 3

• Liquids broken down to small droplets
• Creates mist to allow for gaseous transport

Question 4

Atomiser/Flame

Answer 4

• Converts samples atoms from ground state that can absorb light to become excited state and produce absorption reading
• Goes through process that results substances to being broken down

Question 5

Slit

Answer 5

• Grate between flame source and monochromator
• Can be adjusted to mediate amount of light entering monochromator
• Contours the sensitivity of AAS reading (narrow=lower sense)

Question 6

Monochromator

Answer 6

• Separates light that passes through the gaseous sample and slit, into its individual component wavelengths using prism/grating
• Light hits the grating at different angles which can be isolated to measure certain readings (wavelengths)

Question 7

Detector

Answer 7

• Measures intensity of light passing through monochromator
• Measures amount of light from each wavelength
• Produces set of readings that can be analysed from a final absorbance readout