CHEM 1101 Lecture Notes - Lecture 3: Mass Spectrometry, Chart Recorder, Zirconium

• School: Carleton University
• Department: Chemistry
• Course: CHEM 1101
• Professor: Pam Wolff

Document Summary

Firstly, the atom must be turned into an ion. Electrically charged particles are affected by magnetic field and neutral ones aren"t. The ions are deflected depending on two things: a) b) These two factors are actually combined into the mass/charge ratio (symbol m/z) The output from the chart recorder is usually simplified into a stick diagram . As you will see from the diagram, the most common ion has a mass/charge ratio of 98. Other ions have mass/charge ratios of 92, 94, 95, 96, 97, 100. That means that molybdenum consists of 7 different isotopes. Assuming that the ions all have a charge of +1 which means that the masses of the 7 isotopes on the carbon-12 scale are 92, 94, Note: if there were also +2 ions present. You would know because every one of the lines in the stick diagram would have another line at exactly half its m/z value (i. e 98/2 = 49).