Page 15 - Bullion World Issue 10 Volume 05 October 2025

IGC 2025: Where The World Meets India, Seminar Highlights Bullion World | Volume 5 | Issue 10 | October 2025

Technical Session-1 Workshop on XRF Spectroscopy

Dr. Mike Hinds – Workshop on XRF Spectroscopy

Dr. Mike Hinds delivered a comprehensive workshop on the
role of X-ray Fluorescence (XRF) Spectrometry in precious
metal analysis, emphasizing its importance for non-destructive
testing of gold, silver, and platinum. Using primary X-rays to
excite atoms at the surface and detect characteristic secondary
X-rays, XRF enables accurate elemental identification and
quantification. Key methodologies included Energy Dispersive
(EDXRF) and Wavelength Dispersive (WDXRF) systems. He
stressed on the importance of developing standards, meticulous
sample preparation, correcting matrix effects, and use of certified
reference materials to ensure precise results.

Key Points:
• XRF is a non-destructive method and hence preserves sample integrity. However, it is a surface
measurement technique. Hence homogeneity of the sample, and preparation of surface are critical.
• Importance of correcting matrix effects (absorption, enhancement).
• Certified reference materials enhance accuracy and traceability.
• Systems covered: EDXRF and WDXRF, each with distinct applications.
• Lab quality control practices improve reproducibility.
• Application in detecting purity, plating thickness, and authenticating jewellery.
• Advances in detectors (Silicon Drift Detectors) extend elemental analysis range.

Technical Session-2: Assaying and Quality Control

Mr Pankaj Deshmukh – ISO/IEC 17025 Accreditation Readiness

Mr Pankaj Deshmukh discussed the critical steps for precious
metal laboratories to attain ISO/IEC 17025:2017 accreditation,
underscoring the standard’s comprehensive coverage of technical
and management system requirements. He emphasized that
accreditation is not merely a compliance exercise but a robust
framework to ensure the highest levels of accuracy, reliability, and
global recognition of test results. Drawing from MMTC-PAMP’s
journey, he illustrated how meticulous documentation, proper
resource allocation, and skilled personnel form the backbone of
a successful accreditation process. Mr Pankaj also stressed the
importance of building a culture of quality within laboratories,
where continuous improvement becomes a core operational
principle.

Key Points:
• Accreditation ensures laboratory competence and reliability.
• Documentation is critical: Quality manuals, SOPs, and recordkeeping.
• Focus on personnel skill development and continuous training.
• Calibration and verification of equipment critical.
• Internal audits and management reviews foster improvement.
• Preparation for external assessments requires transparency and readiness.
• Represents an ongoing commitment to quality assurance.

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