Atomic Absorption Spectrophotometer

What is the main purpose of an Atomic Absorption Spectrophotometer?

• To measure the concentration of metal ions in a liquid sample

• To measure the concentration of molecules in a liquid sample

• To analyze the composition of gases

• To measure the concentration of organic compounds

What is the difference between atomic absorption and spectroscopy?

• Atomic absorption measures the concentration of metal ions, while spectroscopy measures the concentration of molecules

• Atomic absorption measures the concentration of molecules, while spectroscopy measures the concentration of metal ions

• Atomic absorption uses specific wavelengths of light, while spectroscopy uses a broad range of wavelengths

• Atomic absorption uses a flame as the light source, while spectroscopy uses a laser

What are the three types of signals that can be read in atomic spectroscopy?

• Emission, absorption, and fluorescence

• Absorption, reflection, and transmission

• Emission, reflection, and transmission

• Absorption, fluorescence, and transmission

What is the role of the hollow cathode lamp in atomic absorption spectrophotometer?

• To produce specific wavelengths of light for each metal ion being analyzed

• To generate heat for the atomization process

• To ionize the metal ions in the sample

• To measure the absorbance of the sample

What is the process of atomization in atomic absorption spectrophotometer?

• Converting metal ions in a liquid sample into individual metal atoms in gaseous form

• Converting metal atoms in a gaseous sample into metal ions in liquid form

• Converting metal ions in a liquid sample into metal ions in solid form

• Converting metal atoms in a solid sample into metal ions in liquid form

What is the purpose of the nebulizer in atomic absorption spectrophotometer?

• To convert the liquid sample into an aerosol for atomization

• To generate specific wavelengths of light for analysis

• To measure the absorbance of the sample

• To stabilize the temperature during the atomization process

Why is absorbance used instead of transmittance in atomic absorption spectrophotometer?

• Absorbance provides a linear relationship with concentration, while transmittance does not

• Absorbance is easier to measure than transmittance

• Absorbance provides a non-linear relationship with concentration, while transmittance provides a linear relationship

• Absorbance is more sensitive than transmittance

What is the role of the monochromator in atomic absorption spectrophotometer?

• To select specific wavelengths of light for analysis

• To convert absorbance values into concentration values

• To stabilize the temperature during the atomization process

• To generate specific wavelengths of light for analysis

What is the main source of radiation in atomic absorption spectrophotometer?

• Hollow cathode lamp

• Flame

• Monochromator

• Detector

What is the purpose of stabilizing the temperature in atomic absorption spectrophotometer?

• To ensure consistent atomization of the sample

• To prevent the sample from evaporating

• To generate specific wavelengths of light for analysis

• To measure the absorbance of the sample