Analysis with separation of As and Pb in Iron and Steel is possible.
Analysis of As and trace Pb in Iron and Steel by Sum Peak Removal Software
Introduction
Iron and Steel are general-purpose materials. However, with existing RoHS analysis, it has not been possible to differentiate between Pb or As contained in the material.
With Element Eye, quantitative analysis is possible with highly-precise separation of As and Pb by using secondary filter + sum peak removal software + smart FP method.
Conventional Result
With the presence of the Fe sum peak, it is not possible to confirm the presence of the PbLβ peak.
Therefore, it is not possible to determine whether the 10.5 keV peak comes from As or Pb.
Result with Secondary Filter
The Fe sum peak is reduced.
This makes it clear that there is almost no PbLβ, and that the 10.5 keV peak is due to the presence of As.
The small sum peak around the 11 to12.5 keV band also disappeared, and confirmation of AsKβ is possible.
Result with Sum Peak Removal Software
In addition, using sum peak removal software (option), the Fe sum peak is compensated for even further, and the original spectrum without the sum peak is obtained.
This spectrum shows that PbLβ does exists, although only a trace level.
Analysis result using the smart FP method
| Element | Standard Value (ppm) |
Analysis Result (ppm) |
Calibration Curve (ppm) |
|---|---|---|---|
| Pb | 38 | 44 | 1630 |
| As | 920 | 884 |
With the smart FP method, every peak such as the Pb Lα line and Lβ line, and the As Kα line and Kβ line are utilized for quantitative analysis.
Therefore, as quantification is conducted by separating the 10.5 keV peak, according to the intensity ratios of the Pb Lα and Lβ, and the As Kα and Kβ, precise quantitative analysis is possible.
* The analysis values are the values using the filter FP method (option). With the RoHS solution, the equivalent value is shown only for the Pb result.
Solutions by field
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