EFFECT OF VARIOUS SHEATH GASES ON ABSORPTION VS. TIME PROFILES IN FLAMELESS ATOMIC ABSORPTION

概要

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This experiment explains the absorption vs. time profile and effects of the kinds and flow rates of various sheath gases in graphite furnace atomic absorption spectrometry. The sheath gases in this experiment were helium, nitrogen and argon, as well as each of them mixed with hydrogen. Aluminum, calcium and copper were selected as the elements of measurement. The atomizing time is determined by the absorption vs. time profile. The atomizing time of aluminum, calcium and copper each is the constant value of flow rates of sheath gases at 2,500 ℃ of graphite tube temperature. The increasing order of the atomizing time (T) is as given below. Al (T=1.4 sec) <Cu (T=1.9 sec) <Ca (T=3.0 sec) The atomizing time of calcium under nitrogen sheath gas is similar to that of copper.
社団法人日本分析化学会の論文
1982-04-05