Automatic Flow System for Measuring Iron and Chromium in Steel Alloys
Author Information
Author(s): Ridvan N. Fernandes, Boaventura F. Reis, Luis Fernando P. Campos
Primary Institution: Universidade Federal do Maranhao, Brazil
Hypothesis
Can a multicommutated flow system effectively determine iron and chromium in steel alloys using photometry?
Conclusion
The developed flow system accurately measures iron and chromium in steel alloys with low reagent consumption and high throughput.
Supporting Evidence
- The system achieved an analytical throughput of 160 determinations per hour.
- Relative standard deviations were 0.4% for iron and 1.2% for chromium.
- No significant difference was observed when comparing results with ICP-AES.
- Low reagent consumption was noted, with 0.33 mg for iron and 0.03 mg for chromium per determination.
Takeaway
This study created a machine that can quickly and accurately measure two metals in steel without wasting much material.
Methodology
The study used a microcomputer-controlled flow system with LEDs and photodiodes to measure iron and chromium concentrations in steel alloys.
Limitations
The study may be limited by the specific conditions under which the flow system was tested.
Statistical Information
Confidence Interval
95%
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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