62.5k views
3 votes
a mass spectrometer is being used to monitor air pollutants. it is difficult, however, to separate molecules with nearly equal mass such as co (28.0106 u ) and n2 (28.0134 u ).

1 Answer

3 votes
Answer:

It can be difficult to separate molecules with nearly equal mass, such as CO (28.0106 u) and N2 (28.0134 u), using a mass spectrometer. One way to improve the separation of these molecules is to use a technique called isotope-ratio mass spectrometry (IRMS).

IRMS works by measuring the ratios of isotopes in a sample, which can help to distinguish between molecules with similar masses. For example, CO and N2 have different isotopic compositions, which means that they have different ratios of carbon-12 to carbon-13 and nitrogen-14 to nitrogen-15.

By measuring these isotopic ratios, IRMS can help to separate CO and N2 in a sample, even though they have nearly equal masses. This makes it a useful tool for monitoring air pollutants and other environmental samples.
User CRGreen
by
8.9k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.