ICP-AES의 광원

유도 결합 플라즈마 원자 방출 분광법

Inductively Coupled Plasma

Atomic Emission Spectroscopy

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원자 흡수 분광기(AAS)과

원자 방출 분광기(AES)에

사용되는 광원의 형태는

“불꽃 (flame)”이다.

▶ 광원. source or plasma

> 유도 결합 플라즈마 (ICP)

It is a type of emission spectroscopy

that uses the “inductively coupled plasma (ICP)”

to produce excited atoms and ions

that emit electromagnetic radiation

at wavelengths characteristic of a particular element.

The plasma is a high temperature source

of ionised source gas (often argon).

[ 그림 출처 Wikimedia ] The construction of ICP torch.

A: cooling gas tangential flow to the outer quartz tube

B: discharge gas flow (usually Ar)

C: flow of carrier gas with sample

D: induction coil which forms the strong magnetic field inside the torch

E: force vectors of the magnetic field

F: the plasma torch (the discharge).

▶ 온도 범위

> 6000 to 10,000 K

The source temperature is

in the range from 6000 to 10,000 K.

[키워드] 원자 방출 분광법 기준, 원자 분광법 기준