Determination of Heavy Metals in Henna using Inductively Coupled Plasma Optical Emission Spectroscopy

Abstract

This research addresses concerns about heavy metal contamination in henna products, widely used for tattoos and hair colouring. A study in Zliten, Libya, highlighted variable heavy metal content, emphasizing the need for manufacturing oversight. Heavy metals like lead and mercury pose health risks, especially in black henna, prompting the investigation into potential dangers and intentional additions. The study recommends using inductively coupled plasma optical emission spectrometry (ICP-OES) for accurate heavy metal analysis, ensuring consumer safety and compliance with regulatory limits.