PerkinElmer aanalyst 200 User Manual page 25

Acetylides
WARNING
1. Aspirate dilute acid (1% (v/v) HCl solution) for 5 minutes then aspirate with deionized water
for another five minutes before turning off the flame.
2. Extinguish the flame and allow the burner head to cool.
3. Remove the burner head.
4. Pour about 500 mL of deionized water slowly through the neck of the burner chamber to
thoroughly flush the chamber and the drain system.
5. Empty the drain vessel.
NOTE: Dispose of hazardous or corrosive solutions properly and refer to your local safety regulations
for proper disposal procedures
Cyanide solutions
If you intend to aspirate cyanide solutions, make sure that the pH of the liquid in the drain vessel
is greater than pH 10; toxic hydrogen cyanide gas is formed when cyanides contact acidic
solutions.
•
Never allow solutions containing cyanides to mix with acidic solutions.
If you have aspirated high concentrations of copper, silver, or mercury
solutions into an acetylene flame, unstable acetylides may have formed in the
burner chamber. If permitted to dry, these compounds may explode
AAnalyst 200 User's Guide
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