Agilent Technologies 7500 ICP-MS - Page 445

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Agilent 7500 ICP-MS ChemStation Operator’s Manual
Performing a Quantitative Analysis
4 If the concentration value entered for a level is used to calculate the
concentration values for other levels using multipliers, set multipliers using the
following method.
1) Select the field of the level to which a concentration value has been entered and
click the right mouse button and select Conc Multiply.
The Conc Multiply dialog box will appear.
Conc Multiply Dialog Box
The multiplier for the level input with a concentration value will show 1.00, and the
indication will be grayed out (the value cannot be changed).
When a multiplier is entered in the text box for each level, the value calculated by
multiplying the concentration value by the entered multiplier will be set for that
level.
2) Enter a multiplier in the text box for each level and click Multiply.
The Edit Calibration dialog box will appear again and indicate the calculated
concentration values for the levels set with multipliers.
5 Click the Curve Fit field and select a calibration equation to be used for drawing
the calibration curve.
For External Calibration:
• Y=aX
• Y=aX+[blank]
• Y=aX+b . Normally, select this equation.
• Y=aXX+bX
• Y=aXX+bX+c
• logY=a(logX)+b
• Excluded