M. Ozturk*1, K. Kahremanoglu1

1 Turkish Energy, Nuclear and Mineral Research Agency, 06510, Ankara, Turkey

*merve.ozturk@tenmak.gov.tr

The chemical analyses of boron products and boron compounds were validated. These studies were carried out for the analysis of 20 elements such as boron (B), aluminum (Al), cadmium (Cd), calcium (Ca), iron (Fe), and zinc (Zn). To ensure the accuracy and verification of the analysis results obtained using the Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES) method, critical performance parameters such as the limit of detection (LOD), limit of quantification (LOQ), accuracy, precision, trueness, and robustness were thoroughly evaluate. Samples were prepared using a closed-vessel microwave digestion system, enabling lower detection limits and shorter analysis times. Recovery studies conducted at low, medium, and high concentrations validated the method's accuracy. Precision was assessed by analyzing the standard deviations of repeated measurements under identical conditions, and repeatability was calculated according to recognized international criteria. In the study, tests carried out in accordance with international standards such as EPA 3051A, EPA 3052 and EPA 6010 proved the linear range and methodological robustness of the analysis method. Method performance was visualized with linearity graphs and selectivity parameter was examined in detail to evaluate the effect of interferences that may be present in boron products and compounds on the measurement results.

Metrology plays a critical role in the accreditation process for laboratories, particularly when performing complex analyses such as boron analysis using the ICP-OES technique (Inductively Coupled Plasma Optical Emission Spectroscopy). In this context, the accuracy, precision, and trueness of the measurements were tested to ensure compliance with established standards in such laboratories. These experiments not only validate the analytical methods but also support the laboratory's accreditation process by demonstrating that its measurements are traceable, reproducible, and compliant with quality assurance standards [1].