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Tag Archives: atomic spectroscopy
Hollow Cathode Lamp
The photo below shows a typical multielemental hollow cathode lamp. The cathode in this lamp is fashioned from an alloy containing Co, Cr, Cu, Fe, Mn, and Ni, and is surrounded by a glass shield to isolate it from the … Continue reading
Posted in Photo
Tagged atomic spectroscopy, hollow cathode lamp, line source, spectroscopy
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Graphite Furnace
A typical electrothermal atomizer, also known as a graphite furnace, consists of a cylindrical graphite tube approximately 1–3 cm in length and 3–8 mm in diameter. As shown here, the graphite tube is housed in an sealed assembly with optically … Continue reading
Posted in Illustration
Tagged atomic spectroscopy, electrothermal atomization, graphite furnace, spectroscopy
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Cross-Sectional Profile of Flame in FAAS
The illustration below shows a cross-section through a typical flame looking down the burner’s slot along the source radiation’s optical path. The primary combustion zone is usually rich in gas combustion products that emit radiation, limiting is usefulness for atomic absorption. … Continue reading
Posted in Illustration
Tagged atomic spectroscopy, burner head, FAAS, flame, spectroscopy
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Absorbance vs. Height Profiles in FAAS
Where within the flame one measures absorbance is critical as two competing processes affect the concentration of free atoms in the flame. The more time the analyte spends in the flame the greater the atomization efficiency; thus, the production of … Continue reading
Posted in Illustration
Tagged atomic spectroscopy, atomization efficiency, FAAS, spectroscopy
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Atomizer for Flame Atomic Absorption Spectroscopy
The photos below shows a typical assembly for flame atomization with close-up views of several key components. In the unit shown here, the sample is drawn into the assembly by passing a high-pressure stream of compressed air past the end … Continue reading
Posted in Photo
Tagged atomic spectroscopy, atomizer, burner head, FAAS, impact bead, spectroscopy, spray chamber
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