EFFECT OF WEAR OF THE ATOMIC-ABSORPTIONSPECTROMETER GRAPHITE 
FURNACEON THE ANALYTICAL ZONE TEMPERATURE

A. N. Kulik, A. N. Bugai, Yu. V. Rogul'skii,M. I. Zakharets,
and L. F. Sukhodub

UDC 543.42

One mechanism of increase in the heating temperature of the analytical
zone of the graphite tube furnace of the atomic-absorption spectrometer
as a result of wear is discussed. The influence of the furnace profile
on its heating temperature is shown, and the calculated heating temperature
of the standard tube is compared to the temperature in the special case
where the cross-section area of the analytical zone of the furnace
is reduced by half. Experimental proofs of a given temperature excess, as
well as of a relation between the change in the tube profile and the
decrease in its mass, are given. The dependence of temperature
on the furnace mass and the number of measurements has been investigated.
The necessity of taking into account the increase in the heating temperature
of the furnace in the wear process has been considered.

Institute of Applied Physics, NAS of Ukraine, 58 Petropavlovskaya Str.,
Sumy, 40030. Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 80, No. 1,
pp. 149-155, January-February, 2007. Original article submitted February 14,
2005; revision submitted December 19, 2005.