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

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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

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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

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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

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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

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