what is the differences that result in ICP atomic emission and ICP-MS when plasma is viewed axially rather than radially.

Jie White, 13 years ago

Grade:Upto college level

1 Answers

SAGAR SINGH - IIT DELHI

878 Points

13 years ago

Dear student,

The ICP-AES is composed of two parts: the ICP and the optical spectrometer. The ICP torch consists of 3 concentric quartz glass tubes. The output or "work" coil of the radio frequency (RF) generator surrounds part of this quartz torch. Argon gas is typically used to create the plasma.

When the torch is turned on, an intense electromagnetic field is created within the coil by the high power RF signal flowing in the coil. This RF signal is created by the RF generator which is, effectively, a high power radio transmitter driving the "work coil" the same way a typical radio transmitter drives a transmitting antenna. The argon gas flowing through the torch is ignited with a Tesla unit that creates a brief discharge arc through the argon flow to initiate the ionization process. Once the plasma is "ignited", the Tesla unit is turned off.

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Sagar Singh

B.Tech, IIT Delhi