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1.What are the essential features of electron impact, chemical ionization, electro spray ionization, atmospheric pressure chemical...

1.What are the essential features of electron impact, chemical ionization, electro spray ionization, atmospheric pressure chemical ionization and ramped ionization mode used in mass spectrometry include whether each is hard or soft process and what are the main benefits or limitations of each. 2. What is an ion reflectance mirror and why is it used in time of flight mass spectrometry

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