What is the best way to do trace metal sampling?
1. All samplers contaminate or distort in some way. • Plastics may leach metals from ultraviolet inhibitors, metal-organic plasticizers, (rarely) metal catalysts. • Teflon has a rough porous surface into which ions, fine charged particles, and very fine particles may become attached. Errors may occur in your first sample due to these trapped trace elements. […]