Key facts
- Brand
- The
- Model
- AA-975
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-06-12
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Agilent Graphite Furnace AAS Platform Application Note
Graphite furnace techniques offer high sensitivity for trace element analysis but are often plagued by chemical and spectral interferences, particularly with volatile elements in complex matrices. This document introduces the graphite platform technique proposed by L'vov, where sample atomization occurs from a platform rather than the tube wall. The temperature lag of the platform delays vaporization, which reduces background absorption and minimizes the formation of volatile compounds that cause interference.
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How to use the product for one specific task, with worked examples.
Questions answered in these manuals
What are the main benefits of using a graphite platform in AAS?
The technique reduces chemical and background interferences by delaying sample vaporization, which discourages volatile compound formation and increases dissociation of molecular species.
From: Agilent Graphite Furnace AAS Platform Application Note
How does the graphite platform affect MgO analysis?
It minimizes the build-up of refractory MgO flakes on the tube ends, allowing for long-term stability without frequent cleaning compared to wall atomization.
From: Agilent Graphite Furnace AAS Platform Application Note
Why is direct aspiration of chlorinated hydrocarbons into the flame discouraged?
Chlorinated hydrocarbons break down into toxic organic compounds, such as phosgene, with flame combustion.
From: Agilent AA-975 Determination of Metals in Chlorinated Hydrocarbons Application Note
Which solvents were investigated for dissolving metal residues?
The study initially investigated 2% hydrochloric acid (2% HCl) and methyl isobutyl ketone (MIBK).
From: Agilent AA-975 Determination of Metals in Chlorinated Hydrocarbons Application Note