Automated System for Measuring Sodium, Potassium, Calcium, and Magnesium in Solutions
Author Information
Author(s): Mariela Pistón, Isabel Dol, Moisés Knochen
Primary Institution: Facultad de Química, Universidad de la República
Hypothesis
Can a multiparametric flow system effectively automate the determination of sodium, potassium, calcium, and magnesium in large-volume parenteral and hemodialysis solutions?
Conclusion
The automated multiparametric system can accurately determine sodium, potassium, calcium, and magnesium in large-volume parenteral and hemodialysis solutions.
Supporting Evidence
- The system achieved high accuracy with recoveries between 97.1% and 102.5% for the four metals.
- Precision was better than 2.1% for all analytes.
- Linearity was satisfactory with r2 values greater than 0.996 for all metals.
- Sampling frequencies were 70-75 samples per hour for the different analytes.
Takeaway
This study created a machine that can quickly and accurately measure important minerals in medical solutions, making it easier for hospitals to ensure quality.
Methodology
The study used a multiparametric flow system with solenoid valves and atomic spectrometry to analyze samples.
Limitations
The system requires manual dilution for hemodialysis concentrate solutions and may have issues with memory effects from high sodium concentrations.
Digital Object Identifier (DOI)
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