Safety Practices For Flame Atomization - PerkinElmer aanalyst 200 User Manual

Safety Practices

Safety Practices for Flame Atomization

Safe operation of the flame
Before you ignite the flame make sure that:
•
The laboratory exhaust venting system is operating;
•
The burner head is installed correctly;
•
The burner end cap is secured firmly;
•
The burner unit contains the necessary solvent-resistant components if you intend to
analyze samples containing organic solvents;
•
The atomizer compartment door is closed;
•
The pH of the liquid in the drain vessel is greater than pH 10 if you intend to aspirate
cyanide solutions.
•
Do not leave the flame unattended. Always make sure that there is a fire extinguisher near
the instrument.
•
Never change the gas pressure or shut a gas valve while the flame is burning.
•
Do not allow the burner head slot to become blocked. This can cause a flashback of the
flame.
•
Do not place open containers of flammable liquids and solvents near to the flame. Be
especially careful with samples that contain highly volatile solvents.
•
When you have analyzed samples containing organic solvents, flush all traces of solvent
from the burner system.
The drain system:
•
Always place the drain vessel in a well ventilated place underneath the spectrometer, in
full view while you are working with the spectrometer. This prevents the build-up of
potentially hazardous gases and allows you to see the liquid level.
•
Empty the drain vessel frequently; especially do not allow the drain vessel to fill with
organic solvent.
•
Thoroughly flush the drain system, as described in the guide, when you shut down the
system.
•
Check the condition of the drain tube regularly, especially if you use organic solvents.
Replace the drain tube when it first shows signs of cracking or discoloration.
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