Key facts
- Brand
- The
- Model
- SpectrAA-40
- Industry
- Industrial
- Documents
- 3
- Languages
- EN
- Last added
- 2012-06-12
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The Measurement of Lead in Food Products by Graphite Furnace AA SpectraAA-40 Application Note
The document details an analytical study measuring trace levels of lead in food products, specifically infant milk powder formula and digested fish tissue. It utilizes Graphite Furnace Atomic Absorption (GFAA) spectroscopy to detect these elements at very low concentrations.
The text compares two sample introduction methods: wall atomization using partitioned pyrolytic coated graphite tubes and platform atomization using a pyrolytic platform. Results indicate that while infant milk powder can be measured directly in solution with minimal background interference, fish digests benefit significantly from the use of a pyrolytic platform to reduce excessive background absorption.
The SpectrAA-40 specifications
| Spectrometer Model | Agilent SpectrAA-40 |
|---|---|
| Silicon Flame Wavelength | 251.6 nm |
| Tin Furnace Wavelength | 251.6 nm |
| Titanium Furnace Wavelength | 364.3 nm |
Source: Agilent GTA-96 Silicon Tin Titanium Jet-Engine Oil Analysis Application Note
All The SpectrAA-40 documents by type
How to use the product for one specific task, with worked examples.
Questions answered in these manuals
What instrument was used for the lead measurement study?
A SpectrAA 40 was used together with the Agilent GTA-96 graphite furnace atomizer and automatic sample dispenser.
From: The Measurement of Lead in Food Products by Graphite Furnace AA SpectraAA-40 Application Note
What wavelength was used for the lead lamp?
A hollow cathode lead lamp was used at a wavelength of 283.3 nm.
From: The Measurement of Lead in Food Products by Graphite Furnace AA SpectraAA-40 Application Note
Which elements are analyzed in this application note?
The document focuses on the determination of silicon, tin, and titanium in jet-engine oils.
From: Agilent GTA-96 Silicon Tin Titanium Jet-Engine Oil Analysis Application Note
What is the recommended sample volume for organic solvents?
Small sample volumes between 10 and 20 microlitres are recommended to prevent solvent creep errors.
From: Agilent GTA-96 Silicon Tin Titanium Jet-Engine Oil Analysis Application Note
Can these methods extract arsenic from silica matrices?
No, neither digestion method can extract arsenic from within a silica matrix; hydrofluoric acid is required for that.
From: Agilent SpectrAA-40P Arsenic Determination Application Note
What stabilizer is recommended for final solutions?
Solid potassium iodide should be added to stabilize solutions, reducing As(V) to As(III).
From: Agilent SpectrAA-40P Arsenic Determination Application Note