What does GFAA mean?
GFAA
| Acronym | Definition |
|---|---|
| GFAA | Graphite Furnace Atomic Absorption Spectrophotometry (metal analysis) |
| GFAA | Gainesville Fine Art Association (Florida) |
| GFAA | Global Forum Against Anti-Semitism (est. 2003) |
| GFAA | Graduate Financial Assistance Application (University of Cincinnati; Ohio) |
What are Gfaas for?
Electrothermal or graphite furnace atomic absorption spectrometry (GFAAS) has found wide application for the determination of trace elements in water, soil, and biological samples. The detection limits are excellent and, under favorable conditions, may reach picogram levels, corresponding to ppb concentrations.
What is graphite furnace atomic absorption spectrometry?
Graphite furnace atomic absorption spectrometry (GFAAS) is also known as electrothermal atomic absorption spectrometry (ETAAS). GFAAS is an established technology for quantifying elements at trace and ultra-trace levels (down to low μg/L) while using only small sample volumes (usually less than 100 μL).
Is AAS qualitative or quantitative?
Atomic absorption spectroscopy (AAS) is a quantitative spectro-analytical procedure for the determination of chemical elements using the absorption of optical radiation by free atoms in the gaseous state (Welz and Sperling, 2008).
What is CV AAS?
Cold Vapor Atomic Absorption Spectroscopy or CVAAS is one of the primary techniques for mercury analysis. Introduced in 1968 by Hatch and Ott, CVAAS is now the reference method for drinking water monitoring under the Safe Drinking Water Act passed in 1974, and amended in 1986 and 1996.
What are AAS principles?
AAS is an analytical technique used to determine how much of certain elements are in a sample. It uses the principle that atoms (and ions) can absorb light at a specific, unique wavelength. When this specific wavelength of light is provided, the energy (light) is absorbed by the atom.
Why is ICP better than AAS?
The ICP-MS is 1000 times better then AAS as the sensitivity is 1000 times more. It also has more throughput then AAS and can perform multiple element in a single run. The application of AAS is limited to few elements but ICP-MS can analyze maximum elements in the periodic table.
Why is ICP preferred over AAS?
ICP-MS is more accurate, favourable, less time-consuming, and not cost-effective for measuring multiple atoms. In comparison, AAS is less accurate, less favourable, more time-consuming and more cost-effective.
Why is ICP-OES better than AAS?
ICPOES does have the advantage of better automation and true unattended operation. Most labs are not comfortable leaving open flames burning on AAS in an unattended fashion. Chemical and ionization interferences are relatively non-existent by ICPOES and can be minimized or eliminated by AAS with chemical modifiers.