Reduction of Argon Consumption to Less than 2 L min(-1) by Gas Recycling in Inductively Coupled Plasma Optical Emission Spectrometry.

An innovative interface between the torch and the entrance optics for inductively coupled plasma optical emission spectrometry (ICP-OES) is proposed. This system is capable of collecting all argon which was initially supplied to the torch, cooling and cleaning it and feeding most of the argon back to the outer gas port of the torch. Thereby, the total argon consumption could be reduced from 14 to 1.