TRM - Al, As, Ba, Cd, Co, Cr, Cu, K, Mn, Mo, Ni, Pb, Se, Sr, Zn - Aqueous calibration solution ASTASOL® TUNE28

Significance of the topic

The accurate calibration of analytical instruments for trace element determination is essential in environmental monitoring, food safety, pharmaceuticals, and industrial quality control. Certified calibration solutions like ASTASOL® TUNE28 ensure reliable measurements, comparability of results, and compliance with international standards.

Objectives and Overview

This identification sheet presents ASTASOL® TUNE28, a multielement aqueous calibration solution designed according to ISO Guide 31. The document outlines its composition, assigned values, uncertainty, traceability, stability, and intended analytical applications.

Methodology and Instrumentation

The solution is prepared gravimetrically from high-purity elemental sources and diluted with 2% (v/v) sub-boiled distilled HNO₃ and ultrapure water (resistivity ≥18 MΩ·cm). Assigned concentrations and uncertainties are established at 20 °C with an expanded uncertainty (k=2). Traceability is achieved through an unbroken chain of calibrations and comparisons to NIST SRMs using AAS, AES, and ICP-OES.

Used Instrumentation

• Atomic Absorption Spectrometry (AAS)
• Atomic Emission Spectrometry (AES)
• Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES)
• Inductively Coupled Plasma Mass Spectrometry (ICP-MS)

Main Results and Discussion

ASTASOL® TUNE28 contains 14 trace elements (Al, As, Ba, Cd, Co, Cr, Cu, Mn, Mo, Ni, Pb, Se, Sr, Zn) at 5.00 ± 0.05 mg/L and potassium at 50.00 ± 0.25 mg/L (k=2). Total impurities remain below 0.05 mg/L. Homogeneity and stability studies confirm consistent performance over the two-year shelf life under recommended storage conditions (5–30 °C) and usage protocols.

Benefits and Practical Applications

• Provides multi-element calibration in a single solution, reducing preparation time and error.
• High purity and certified traceability support method validation and quality assurance.
• Compatible with diverse analytical platforms (AAS, AES, ICP-OES, ICP-MS, molecular absorption, electroanalysis).

Future Trends and Possibilities

Emerging developments may include custom matrix-matched calibrators for complex sample types, extension to additional element isotopes, and digital certification with blockchain traceability. Automated calibration systems and enhanced uncertainty modeling will further advance analytical reliability.

Conclusion

ASTASOL® TUNE28 is a rigorously characterized, stable, and traceable multielement calibration solution suited for a wide range of spectrometric and electroanalytical methods. Its comprehensive documentation and quality management ensure dependable analytical results.

References

No external publications listed. Product characterization relies on internal certified reference materials (CRMs) traceable to NIST standard reference materials (SRMs).