Effect of electrical heating of a L'vov platform on atom formation within a graphite electrothermal atomiser

Abstract

The relative degrees of electrical and conductive heating of a L'vov platform in either grooved or non-grooved pyrolytic graphite coated tubes have been assessed by using semi-conducting silicon supports to eliminate the former mode of heating. The degree of electrical heating of a L'vov platform in a grooved tube is approximately 12 times greater than that in a non-grooved tube and can lead to variable atomic signals and analytical error.