TRM - Ba, Bi, Ce, Co, Ho, In, Li, Mg, Ti, U, Y - Aqueous calibration solution ASTASOL® TUNE11E

Importance of the Topic

Certified multi-element calibration solutions play a crucial role in modern analytical chemistry, where accurate quantification of trace metals is essential for environmental monitoring, pharmaceutical quality control, and industrial process management. By providing reliable concentration values and documented uncertainties, these reference materials ensure consistency and traceability across laboratories and methods.

Objectives and Overview of the Article

This document summarizes the key features of the ASTASOL® TUNE11E aqueous calibration solution produced by ANALYTIKA®. The primary objective is to present the product’s composition, preparation methodology, traceability, and performance characteristics, highlighting its intended application as a multi-element calibrator for various spectrometric and electroanalytical techniques.

Methodology and Instrumentation Used

The calibration solution is prepared gravimetrically from high-purity primary compounds (99.95 %–99.999 %) of eleven elements (Ba, Bi, Ce, Co, Ho, In, Li, Mg, Ti, U, Y). The acidic matrix consists of 2 % sub-boiled distilled HNO₃, 0.5 % sub-boiled distilled HCl, and ultrapure water (≥ 18 MΩ·cm, 0.22 µm filtered). Assignment of concentrations (1.00 ± 0.05 µg/L per analyte) and expanded uncertainties (k = 2) relies on gravimetry and comparisons with certified reference materials (CRM AN series) traceable to NIST SRMs via 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)
• Molecular Absorption Spectrometry
• Electroanalytical Methods

Main Results and Discussion

The product delivers a uniform concentration of 1.00 µg/L for each target analyte, with maximal trace impurities below 0.02 µg/L. Homogeneity tests confirm no significant variation between bottles. Stability studies demonstrate that proper storage (5 °C–30 °C, unopened) and controlled temperature (20 ± 0.5 °C) during use maintain integrity throughout the one-year shelf life. Detailed handling instructions prevent contamination and concentration drift.

Benefits and Practical Applications

The ASTASOL® TUNE11E solution offers:

• Comprehensive multi-element calibration in a single solution
• High traceability and low uncertainty for regulatory compliance
• Compatibility with a broad range of analytical platforms (AAS, ICP-OES, ICP-MS, etc.)
• Enhanced laboratory efficiency by reducing the need for multiple single-element standards

It is particularly suited for environmental testing, metallurgical analysis, pharmaceutical quality control, and industrial monitoring.

Future Trends and Opportunities for Use

Emerging needs in ultra-trace analysis and automated workflows drive demand for reference materials with even lower uncertainties and digital certification. Future developments may include:

• Customized multi-element blends for specific matrices
• Integration of QR-coded digital certificates
• Enhanced stability formulations to extend shelf life
• Expansion into near-infrared and laser-based spectroscopic calibration

Conclusion

The ASTASOL® TUNE11E calibration solution provides a robust, traceable, and user-friendly standard for multi-element quantification at the µg/L level. Its comprehensive characterization, rigorous quality management, and clear handling protocols make it a valuable tool for analytical laboratories striving for high accuracy and reproducibility.

Reference

• ANALYTIKA®, ASTASOL® TUNE11E Aqueous Calibration Solution Identification Sheet, Version 01, March 2023.
• ISO Guide 31: Reference Materials – Contents of Certificates and Labels.