Safety Practices For Electrothermal Atomization; Inert Gas; Safety Checks - PerkinElmer AAnalyst 700 User Manual

Safety/Regulatory Information

Safety practices for electrothermal atomization

Safety interlocks
PerkinElmer provides a number of safety interlocks on the graphite furnace
(electrothermal atomization) system that monitor the gas pressure and the
temperature of certain system components.

Do not attempt to defeat these interlocks; you may compromise your own, or
someone else's, safety.

Inert gas

The graphite furnace requires a supply of inert gas. PerkinElmer recommends
argon .
Although nitrogen can be used, it is not recommended for the inert gas supply. At
furnace temperatures above 2300 °C, nitrogen reacts with graphite to form toxic
cyanogen gas (CN)

Safety checks


Before you start an analysis, make sure that:
1-22
.
2
The laboratory fume ventilation system is operating;
–
The inert gas supply is connected and set to the correct pressure;
–
The cooling water supply is turned on;
–
The autosampler waste bottle is empty.
–
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