PerkinElmer AVIO 500, Customer Hardware And Service Manual

Page: 53 / 355

51
Sample Preparation
Hydrofluoric Acid
Hydrofluoric acid (HF) is also used for digestions. It is toxic and extremely
corrosive. Hydrofluoric acid will readily burn skin, and if the fumes are inhaled,
lung tissue. Burns may not be immediately painful or visible. Contact with eyes
could result in blindness.
• Always wear suitable protective equipment, including goggles, a face shield,
acid-resistant gloves, and protective clothing when using hydrofluoric acid.
• Do not breathe HF vapors. Always work in a fume hood when using
hydrofluoric acid.
• Do not use a glass beaker. Hydrofluoric acid attacks glass.
• Observe the additional hazards and precautions outlined in References 1, 2, 9,
10 and 11 on page 55.
Performing Digestions
When carrying out sample digestions:
• Always work in a hood suitable for the type(s) of chemicals you are using.
• Add very small quantities of the acid dropwise, while observing the magnitude
of the reaction.
• Apply heat to a digestion solution slowly in case a further vigorous reaction is
initiated.
Before using hydrofluoric acid, you should be thoroughly familiar
with its hazards and safe handling practices.
Observe the
manufacturer's recommendations for use, storage, and disposal.
Avertissement: Avant d'utiliser l'acide fluorhydrique, vous devriez
être familier avec ses dangers et les pratiques de manipulation
sécuritaires.
Respecter les recommandations du fabricant pour
l'utilisation, le stockage et l'élimination.
!
Warning