EI8551-AI-Unit 1-1.8-Flame Emission Photometry

The function of pressure regulators in the emission system of a flame photometer is to have a steady flame which is free from flickers.

• True

• False

In the Total consumption burner, only samples of particular droplet size will enter the burner.

• True

• False

Which of the following is the principle of Flame emission photometers?

• a) Radiation is absorbed by non-excited atoms in vapour state and are excited to higher states

• b) Medium absorbs radiation and transmitted radiation is measured

• c) Colour and wavelength of the flame is measured

• d) Only wavelength of the flame is measured

In Flame emission photometers, the measurement of _____________ is used for qualitative analysis

• a) Colour

• b) Intensity

• c) Velocity

• d) Frequency

In Flame emission photometers, the measurement of _____________ is used for quantitative analysis

• a) Colour

• b) Intensity

• c) Velocity

• d) Frequency

Which of the following is not an advantage of Laminar flow burner used in Flame photometry?

• a) Noiseless

• b) Stable flame for analysis

• c) Efficient atomization of sample

• d) Sample containing two or more solvents can be burned efficiently

Laminar flow burner used in Flame photometers is also known as ____________

• a) Turbulent burner

• b) Premix burner

• c) Total consumption burner

• d) Nozzle mix burner

Which of the following is the advantage of prism monochromators?

• a) Dispersion is non-overlapping

• b) Dispersion occurs in non-linear manner

• c) Dispersion is overlapping

• d) Dispersion occurs in a linear manner

Which of the following is not a detector used in Flame emission photometers?

• a) Photronic cell

• b) Photovoltaic cell

• c) Photoemissive tube

• d) Chromatogram

Phototubes are more sensitive than photovoltaic cells

• True

• False