icp ms

Discussions about GC-MS, LC-MS, LC-FTIR, and other "coupled" analytical techniques.

2 posts Page 1 of 1
Dear All,
I just started to work with icp ms for my projects. I work with silicon wafers and I interested in metal impurity concentration. I have some questions regarding the data analysis. I have mass of my sample before digestions and the raw data from icp ms instrument expressed in ppb concentration. What should I do know with my data? I assumed I have to recalculate the concentration. Thank you a lot for your help.
Elli wrote:
Dear All,
I just started to work with icp ms for my projects. I work with silicon wafers and I interested in metal impurity concentration. I have some questions regarding the data analysis. I have mass of my sample before digestions and the raw data from icp ms instrument expressed in ppb concentration. What should I do know with my data? I assumed I have to recalculate the concentration. Thank you a lot for your help.



ppb would be ug/l or ng/ml

If final solution volume after extraction of the solid material is 100ml then,

ng/ml for element from instrument = ng/ml x 100ml = ng of element in initial sample

ng element in initial sample / sample weight (g) would = ng/g of element in sample or ppb in sample.

so,

(Instrument value (ppb) x extraction volume (ml))/ sample weight (g) = concentration in sample (ppb or ng/g)
The past is there to guide us into the future, not to dwell in.
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