Agilent Technologies 7500 ICP-MS Operator's Manual page 488

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4 Click the arrow under Element in the Internal Standard Elements box.
5 Select the internal standard element from the list.
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6 Select up to 4 elements for internal standards repeating steps 4 and 5.
7 Fill in the text boxes under "IS Conc" with the concentration of ISTD in the
8 Click OK.
Agilent 7500 ICP-MS ChemStation Operator's Manual
Performing a Semiquantitative Analysis
To set the Background File and Interference Correction, select Method >> Data
Correction in the ICP-MS Data Analysis window.
All elements are in the list.
The mass to be analyzed will automatically be selected according to the element,
and will be displayed under Mass.
The SemiQuant Factor of the each ISTD will be displayed under SemiQuant Factor.
The mass defined in the Internal Standard Correction and the SemiQuant parameters
must be the same.
You can specify up to four elements to be used as internal standards. If only one
element is selected, all reported elements will be corrected using the single internal
standard element specified. If more than one internal standard element is selected,
the internal standard correction factor used for each element between any two
adjacent internal standard elements is derived by interpolation of the linear response
between those two internal standard elements.
Mass displays the mass of the specified element as set in the semiquant parameters
panel.
sample.
Enter the concentration of the internal standard element(s) in the sample. The units
of concentration must be the same both for the sample and for the standard.
The internal standard correction will now be set and ChemStation returns to the
ICP-MS Data Analysis window.
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