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Comparative study of Heavy Metals contamination in different Commercial Shilajit Variants: An analytical approach

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Author Affiliations

  • 1Department of Forensic Science, JAIN (Deemed-to-be University), Bengaluru, Karnataka, India
  • 2Department of Forensic Science, JAIN (Deemed-to-be University), Bengaluru, Karnataka, India

Res. J. Forensic Sci., Volume 14, Issue (2), Pages 22-26, July,29 (2026)

Abstract

Shilajit is a widely used phyto-mineral substance in traditional medicine; however, concerns regarding heavy metal contamination have raised questions about its safety. The present study aimed to evaluate the presence of cadmium (Cd) and nickel (Ni) in commercially available Shilajit samples using qualitative and quantitative analytical techniques. Four different Shilajit samples were subjected to dry ashing followed by extraction using 4N hydrochloric acid. Qualitative analysis was performed using standard chemical tests, while quantitative determination was carried out using Inductively Coupled Plasma–Mass Spectrometry (ICP-MS). The results indicated that cadmium was below the detectable limit (<0.1 ppm) in all analysed samples. In contrast, nickel was detected in all samples, with concentrations ranging from 0.63 ppm to 1.07 ppm. Although the detected levels were generally within permissible limits, slight variation among samples was observed. The presence of nickel across all samples and variability in its concentration suggest possible influence of environmental factors, geographical origin, and processing techniques. While the immediate risk may be low, the potential for bioaccumulation and long-term exposure cannot be overlooked. The findings highlight the need for strict quality control, standardisation, and regular monitoring of Shilajit products to ensure consumer safety.

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