Machine-translated by Google. Questions are authored in English.
Top

Discussion

What is a releasing agent used for?

  • A.Freeing the analyte from a refractory compound
  • B.Releasing the sample from the nebuliser
  • C.Suppressing ionisation in the hotter flame
  • D.Removing dissolved oxygen from the solution

Answer: A

Where phosphate or aluminium ties calcium into a compound the flame cannot break, adding lanthanum or strontium preferentially binds the interferent and releases the analyte to atomise. Nebulisation, ionisation and dissolved oxygen are other matters. Adding a competitor that binds the troublemaker more strongly than the analyte does is the standard answer to a chemical interference, and it costs only a reagent in every standard and sample. Checking the units of each quantity catches a wrong formula before the arithmetic begins.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.