Instrumental Analysis

Which of the following is the atomic emission spectroscopy methods?

• Graphite Furnace Atomic Emission Spectroscopy

• Inductively Couple Plasma- Optical Emission Spectroscopy

• Flame Atomic Emission Spectroscopy

• Hydride Generation Atomic Emission Spectroscopy

Flame photometer is quite similar to UV-Visible but what is the major difference between these 2 methods?

• Detector

• Source of light

• Monochomator

• Data processor

Tags

NGSS.HS-PS4-3

What is plasma?

Plasma is made up of stream of highly ionised gas that contain the ____ and _____

In the ICP-OES, why plasma with highly temperature system is used?

• to desolvate the sample solution

• to condense the sample molecule

• to vaporize the sample

• to atomize the sample molecule

• to ionize the atoms

What is the disadvantage of ICP-OES over flame photometer?

• Require large volume of sample

• Has lower detection limit

• Require high degree operator skill

• The analysis is long

Which components are consisting in the ICP-OES sample introduction system?

• Nebulizer

• Spectrometer

• Photomulti tube PMT

• Spray chamber

What is the main component int the ICP-MS that cannot be found in ICP-OES?

ICP-MS can detect the sample concentration up to PPB while ICP-OES can detect a concentration of sample up to PPT. Determine whether this statement is RIGHT or WRONG.

• Right

• Wrong

What is the function of Dynode Detector in ICP-MS?

• to detect the atoms leaving the quadrupole

• to count the number of ions separated based on the mass

• to measure the signal electronic from the cascade of electrons produced

• to measure the signal of emission from the excited atoms to the lower state

One of the advantages of ICP-MS over the other atomic spectroscopies is can detect precisely the presence of _______ of each element, which have same number of proton but different number of neutron.

Tags

NGSS.HS-PS1-8