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Atomisation or ionisation occurs at which of the following conditions?

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in Analytical Instrumentation by (131k points)
Atomisation or ionisation occurs at which of the following conditions?

(a) Vacuum pressure

(b) Atmospheric pressure

(c) Low pressure

(d) High pressure

I had been asked this question in an international level competition.

The origin of the question is Inductively Coupled Plasma Mass Spectrometer topic in chapter Mass Spectrometer of Analytical Instrumentation

1 Answer

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Correct choice is (d) High pressure

For explanation I would say: Atomization or ionisation occurs at atmospheric pressure. The interface between the ICP and MS components are crucial in creating a vacuum.

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