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Question 4 (a) State TWO advantages and TWO disadvantages of electron impact ionisation (EI) as an ionisation technique in mass spectrometry. (2 marks) (b) Outline

Question 4

(a) State TWO advantages and TWO disadvantages of electron impact ionisation (EI) as an

ionisation technique in mass spectrometry.

(2 marks)

(b) Outline one strategy, which could be used to control the degree of fragmentation in an electron ionisation experiment. Your answer should address any relevant disadvantages of your suggestions.

(2 marks)

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