CRM Nickel (Ni) -

Analytical Summary of ASTASOL® AN8038N Nickel Calibration Solution

Significance of the Topic

Reliable calibration standards are essential for accurate quantification in trace metal analysis. Certified reference materials (CRMs) like ASTASOL® AN8038N provide traceability to SI units and ensure comparability across laboratories. The high purity and well‐characterized uncertainty of this nickel solution make it a cornerstone for quality assurance in atomic spectrometry and other analytical techniques.

Objectives and Study Overview

This certificate documents the production, characterization, and recommended use of a 100 mg/L nickel aqueous calibration solution. The primary goals are:

• To certify the nickel concentration with expanded uncertainty (k=2).
• To demonstrate homogeneity, stability, and traceability to SI units.
• To provide guidance on storage, handling, and application in various spectrometric methods.

Methodology and Instrumentation

The solution was prepared gravimetrically from 99.995% pure Ni metal, ensuring direct traceability to the kilogram. Verification methods included complexometric titration against NIST SRM 928 and independent determination using NIST SRM 3136. Trace impurities were quantified by AAS, ICP-OES, and ICP-MS for user information.

Used Instrumentation

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

Main Results and Discussion

• Certified nickel concentration: 100.0 mg/L with expanded uncertainty ±0.5 mg/L (k=2).
• Solution density at 20 °C: 1.0110 g/cm³ ± 0.0005 g/cm³.
• Trace element concentrations are below detection limits or present at sub‐µg/L levels, unsuitable for calibration but informative for screening.
• Homogeneity and stability tests confirm consistent performance over a five‐year shelf life under recommended conditions.

Benefits and Practical Applications

The CRM supports method calibration and validation in a wide range of techniques, including AAS, AES, ICP-OES, ICP-MS, molecular absorption spectrometry, and electroanalytical methods. Its certified value and traceability facilitate regulatory compliance, interlaboratory comparisons, and quality control in environmental, industrial, and research laboratories.

Future Trends and Potential Uses

• Expansion of multi‐element certified solutions for simultaneous calibration across multiple analytes.
• Development of matrices tailored to emerging analytical challenges, such as biofluids or complex environmental samples.
• Integration with digital tracking and blockchain for enhanced CRM provenance and user notifications on expiry.

Conclusion

ASTASOL® AN8038N is a rigorously characterized nickel CRM offering high purity, reliable traceability, and clear handling instructions. It underpins accurate analytical results and robust quality assurance frameworks in trace metal determinations.

Reference

No bibliographic references were provided in the original certificate.