Agilent Technologies 7500 ICP-MS User Manual

A-24
Agilent 7500 ICP-MS ChemStation Operator’s Manual
Appendix
where
Mi: Mass number of internal standards
n: Number of internal standards (two in the case of “Point to Point”)
Ri: Modification rate of the internal-standard CPS between the
standard data and sample data
Ma:Mass number of the element to be quantitatively analyzed
Ra: Virtual-internal-standard correction coefficient for
correcting the CPS of the element to be quantitatively
analyzed
Quadratic (Y = aX
2
+ bX + c; All internal standards are used.)
where
Mi: Mass number of internal standards
n: Number of internal standards
Ri: Modification rate of the internal-standard CPS between the
standard data and sample data
Ma:Mass number of the element to be quantitatively analyzed
Ra: Virtual-internal-standard correction coefficient for correcting
the CPS of the element to be quantitatively analyzed
2
)()(
)(
)(
)()(
)(
}{
222
22
MMMM
MM
MM
MRMM
RM
SSS
SSSS
a
−
−
=
2
)()(
)(
)()()(
)(
}{
222
2222
MMMM
MM
MMRMMM
MR
SSS
SSSS
b
−
−
=
n
Mi
a
n
Mi
b
n
Ri
c
ii
∑
∑∑
−−=
2
cbMaaMaMaRa ++=

Agilent Technologies 7500 ICP-MS Specifications

General

Brand	Agilent Technologies
Model	7500 ICP-MS
Category	Laboratory Equipment
Language	English