Creating and Using Report Tables
Calculating the Peak Variable "Amount"
If you wish to check the indicated Amount values, have a look at the respective coefficients of the calibration function first. Then, add the columns offset (c0), slope (c1), and curve (c2), which are all part of the Peak Calibration category.
For the amount calculation of an unknown sample, the inverse function f(y) of the calibration function F(x) must be calculated. Calibration functions are calculated as follows:
Linear: |
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Linear with offset: |
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Quadratic: |
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Quadratic with offset: |
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Exponential (power function): |
Note:
For ambiguous inverse functions (two possible values for quadratic with or without offset) always use the value which comes "closest" to the X values of the respective calibration.
If it is not possible to calculate the expression (c1=0 for linear with or without offset, the radiant < 0 for quadratic with or without offset, or c0=0, or c2=0 for exponential), "n.a." is returned as amount.
If the response factor, dilution factor, weight, and a factor for the Internal Standard are available, that is, if they do not equal 1, they have to be considered for the calculation as well (see Formula for Amount Calculation).