[Bitty]

Hey everybody,

           Does anyone have any experience determining interference equations for ICP-MS? I'm running a 6000C Argon torch for Phosphorus, Sulpher, Arsenic, Selenium, Calcium, magnesium, Beryillium, Boron, Barium and a bunch of transition metals.  Can't find interference equations on the net. is there somewhere I can find them? If not how do I determine them?

Any suggestions would be appreciated.

Bitty

[mercury]

check the manual, its usually in there or check with yr supplier as they have to provide support on this.Please take note that not all elements can be interferant corrected.

[realkhemist]

Check out EPA method 6020. They have some examples of designing an interference equation.  You basically correct by measuring the signal from another isotope of the interfering element and subtract the appropriate signal ratio from the isotope of interest.