Agilent Technologies 7500 ICP-MS Operator's Manual page 643

Agilent 7500 ICP-MS ChemStation Operator's Manual
Appendix
Start
cps < min. peak
No
(count / bkg count) < 3%
No
Isotope abundance error <= 10%
No
Oxide Check:
(count of target / count of (target - 16 amu)) <= 1%
Hydride Check:
(count of target / count of (target - 1 amu)) <= 1%
Argide Check:
(count of target / count of (target - 40 amu)) <= 0.1%
Doubly Charged Check:
(count of target / count of (target x 2 amu)) <= 1%
Dimer Check:
(count of target / count of (target / 2 amu)) <= 0.1%
No
Calculate concentration
(count x dilution factor x *ISTD factor)
/ SemiQuant factor
Next element
where
Auto Add Mode
*ISTD factor = (cps of ISTD in the STD) / (cps of ISTD in the sample)
Normal Mode
*ISTD factor = (concentration of ISTD in the sample) x (SemiQuant factor)
Yes
Output is ON?
Output is ON?
No
Yes
Yes
Yes
Yes
Output is ON?
No
Yes
/ (cps of ISTD in the sample)
No
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