Rotating disc nebulizer for inductively coupled plasma optical emission spectrometry

Abstract

A rotating disc nebulizer, of apparently unique design, has been developed for use in inductively coupled plasma optical emission spectrometry. The fundamental component is a rotating disc onto which the liquid or slurry sample is introduced. It is easy to construct, requires no additional spray chamber, is easy to operate effectively and is blockage free. Aerosols with mean droplet diameters of approximately 0.50 µm are produced. Furthermore, the aerosols are homogeneous, with up to 80% of the droplets having diameters no larger than 0.6 µm. Unfortunately, the aerosol transport efficiency is poor, this has a determental effect on the detection limits, sensitivity and stability. Principles of operation are described, aerosol production and analytical performance are evaluated.