Agilent 7500 ICP-MS ChemStation Operator's Manual
Appendix
Standard Deviation of the Concentration
When a linear regression is used, the standard deviation is calculated as follows.
⎛
∑
1
−
⎜
2
x
⎝
i
n
=
i
SD
−
n
where
n
: number of sample repeats
x
: concentration
i
A-22
⎞
2
∑
⎟
x
⎠
i
i
1