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Thermo Fisher Scientific

Strontium Interference on Calcium

Issue

Recovery of quality control and unknown samples could be excessively low when strontium-88 and calcium-44 are used during calibration.

Environment

  • iCAP Q
  • iCAP RQ
  • iCAP TQ

Resolution

If it is necessary to analyze calcium at a mass/charge of 44, then an interference equation can be calculated by determining the strontium overlap onto calcium using a single element strontium standard.

Cause

Isobaric overlap of double charge strontium-88 with calcium-44

 

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