MSF Procedure Sample

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Creating the MSF Model
1. Set up Method
2. Calibrate and analyze samples
3. Evaluate the results
4. Identify blank, analyte and interference(s) in
Examine/MSF window
Example: the effect of Cu on the determination of P
Creating the MSF Model
Set up a Method for the determination of P
Choose 3 wavelengths for P and 1 wavelength for Cu
• P: 178.221, 213.617, and 214.914
Calibrate with single element solution of P at 20 mg/L
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Solutions to prepare
Blank
Creating the MSF Model
20 mg/L P
100 mg/L Cu (the interference)
10 mg/L P + 200 mg/L Cu
NOTE: All solutions in 1-2% HNO
3
Defining the Analytes
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Spectrometer Settings
Plasma Parameters
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Defining the Standards
Standard Concentration
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Sample Information Editor
Automated Analysis: Set Up
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Automated Analysis: Analyze
Manual Analysis
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Review the Results
Check sample data at all wavelengths
Sample P178 P213 P214 Cu 224
Chk. Blk.
<0.1 <0.1 <0.1 <0.1
Chk. P Std.
20.1 19.9 19.8 <0.1
Interferent
0.0 -339 -70.1 193
10 mg/L P in
Cu
9.4 -328 -59.9 193
All results in mg/L
Creating the MSF Model: Examine/MSF
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Select the Data Set
Select the Data Set
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Select the Samples
Select the Analytes
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Creating the MSF Model: Identify the Blank
Creating the MSF Model: Identify the Analyte
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Creating the MSF Model: Identify the Interference
Creating the MSF Model
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Testing and Using the MSF Model
1. Update Method
2. Reprocess the data or reanalayze the samples
3. Evaluate the results
Update the Method
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Update the Method
Reprocess the Data
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Review the Reprocessed Data
Check sample data using MSF Model
Sample P178 P213 P214 Cu 224 Sample P178 P213 P214 Cu 224
Chk. Blk.
<0.1 <0.1 <0.1 <0.1
Chk. P Std.
20.1 19.9 19.8 <0.1
Interferent
<0.1 <0.1 <0.1 193
10 mg/L P with Cu
9.9 10.0 9.4 193
All results in mg/L