CRM Al, As, B, Ba, Be, Bi, Ca, Cd, Co, Cr, Cu, Fe, K, Li, Mg, Mn, Mo, Na, Ni, Pb, Se, Sr, Ti, Tl, V, Zn - Aqueous calibration solution ASTASOL® AN9090MN

Importance of Aqueous Calibration Standards

Calibrating analytical instruments with high-purity reference materials ensures accurate quantification of trace elements in complex matrices. The ASTASOL® AN9090MN solution provides a broad spectrum of essential and trace metals at certified levels, supporting critical quality control in laboratories using atomic and molecular spectrometric methods.

Objectives and Overview

This certificate describes the preparation, certification, and characterization of an aqueous calibration solution containing 25 elements at 100 mg/L. It outlines production details, uncertainty evaluation, homogeneity, stability data, and intended use for method calibration and validation.

Methodology and Certification

The solution was prepared gravimetrically using primary compounds of known purity, ensuring direct traceability to the SI unit kilogram. Verification employed:

• Gravimetric and titrimetric methods for primary characterization
• Atomic absorption spectrometry (AAS), atomic emission spectrometry (AES), inductively coupled plasma optical emission spectrometry (ICP-OES), and ICP mass spectrometry (ICP-MS) calibrated with independent CRMs (e.g., NIST SRMs)

Each analyte is certified at 100.0 ± 0.2 mg/L (expanded uncertainty k=2). Density and uncertainty were determined as 1.0345 ± 0.0005 g/cm3 at 20 °C.

Main Results and Discussion

All analytes demonstrated satisfactory homogeneity and stability over the 5-year shelf life under specified storage conditions. Trace impurities were quantified for informational purposes and remained below critical thresholds. The consistent performance across verification methods confirms reliability for calibration tasks in diverse analytical workflows.

Benefits and Practical Applications

Providing multi-element calibration in a single matrix accelerates routine analysis while minimizing preparation errors. It supports the calibration of AAS, AES, ICP-OES, ICP-MS, molecular absorption, and selected electroanalytical assays in environmental, pharmaceutical, and industrial laboratories.

Future Trends and Possibilities

Development of more element-rich multi-analyte CRMs and extended stability formulations may further streamline calibration. Integration with automation and high-throughput platforms will enhance quality control processes in regulatory and research settings.

Conclusion

The ASTASOL® AN9090MN certified reference material offers a robust, SI-traceable calibration solution for a wide array of spectrometric techniques, ensuring high accuracy and reproducibility in trace element analysis.

Used Instrumentation

• Flame and graphite furnace AAS
• Atomic emission spectrometry (AES)
• ICP-OES
• ICP-MS
• Complexometric and gravimetric titrations

Reference

• SRM NIST 928
• NIST SRM 3101a, 3103a, 3104a, 3105a, 3106, 3109a, 3108, 3112a, 3113, 3114, 3129a, 3131a, 3132, 3134, 3152a, 3136, 3128, 3149, 3153a, 3158, 3165, 3168a