Restriction of Hazardous Substances also known as RoHS is used to describe chemical elements which can be harmful to humans, especially children when they reach a certain level. The “top” four elements are lead (Pb), arsenic (As), mercury (Hg) and cadmium (Cd).
The European Union implemented the legislation and it was soon followed by China and other countries involved in global trade. The new RoHS Directive 2011/65/EU, entered into force on 21 July 2011, and from 22 July 2014 the substance restrictions gradually extended to new product categories covering all phases of manufacture, from raw materials to finished products.
Portable X-ray fluorescence (pXRF) provides users with a quick and non-destructive technique of analysis of toxic heavy metals in essentially any type of material.