CRM Yttrium (Y) - Aqueous calibration solution ASTASOL® AN8067N

Importance of the Topic

Aqueous calibration solutions containing certified concentrations of trace elements are essential for accurate quantification in analytical chemistry. Yttrium calibration standards support method validation and instrument performance checks in techniques such as atomic spectrometry (AAS, AES, ICP‐OES, ICP‐MS) and electroanalytical procedures. Reliable reference materials ensure traceability to SI units, facilitate interlaboratory comparability, and underpin quality control in research and industrial laboratories.

Study Objectives and Overview

This certificate describes the preparation, characterization, and intended use of ASTASOL® AN8067N, a yttrium‐based certified reference material (CRM). The primary goals are to:

• Provide a stable aqueous solution with a well‐defined yttrium concentration (100.0 mg/L at 20 °C).
• Ensure direct traceability to the kilogram through gravimetric preparation.
• Demonstrate homogeneity and stability over a five‐year shelf life.

Methods and Instrumentation

Preparation and certification of ASTASOL® AN8067N involved:

• Gravimetric weighing of high‐purity Y₂O₃ (99.99%) to achieve the target concentration.
• Use of sub‐boiled distilled nitric acid (ANALPURE®) and ultrapure water (≥ 18 MΩ·cm, 0.22 μm filtered) as matrix components.
• Verification of yttrium concentration by complexometric titration against NIST SRM 928 and comparison with NIST SRM 3167a reference solution.
• Determination of trace impurities by atomic absorption spectrometry (AAS), inductively coupled plasma optical emission spectrometry (ICP‐OES) and mass spectrometry (ICP‐MS) for user information.

Main Results and Discussion

The certified yttrium concentration is 100.0 ± 0.2 mg/L (k = 2) at 20 °C, corresponding to 98.5 ± 0.3 mg/kg when adjusted by density (1.0150 ± 0.0005 g/cm³). Impurity analysis confirmed that common metal contaminants remain below detection limits or at trace levels, ensuring negligible interference in calibrations. Homogeneity tests demonstrated consistent concentration across bottles, and accelerated stability studies indicated no significant drift over the defined shelf life when stored between 5 °C and 30 °C.

Benefits and Practical Applications

ASTASOL® AN8067N offers laboratories a turnkey solution for:

• Calibration of spectrometric and electroanalytical instruments measuring yttrium.
• Validation of analytical methods in environmental, materials, and industrial testing.
• Establishing traceability chains and complying with regulatory and accreditation requirements (ISO 17034, ISO/IEC 17025).

Future Trends and Potential Applications

Emerging analytical demands include multi‐element speciation and ultra‐low detection limit measurements in complex matrices. Custom CRMs with combined rare earth element cocktails, extended trace impurity profiles, or compatibility with microfluidic and inline sensing platforms may address next‐generation method requirements. Digital certification and blockchain‐based tracking of CRM performance are also gaining interest for enhanced transparency.

Conclusion

ASTASOL® AN8067N represents a rigorously characterized yttrium aqueous calibration solution with full SI traceability, robust homogeneity, and documented stability. Its certified concentration and low impurity levels support high‐confidence quantitative analyses across a range of instrumental techniques. Proper storage and handling as specified guarantee performance throughout the five‐year shelf life and twelve‐month post‐opening period.

Reference

ISO Guide 31: Reference Materials – Contents of Certificates and Labels