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- W2024536471 abstract "Abstract The dependence of the analytical signal on the furnace length is studied through Monte Carlo simulations for Cu and Ag. The impact of the dosing hole, heating rate, final temperature and readsorption of analyte on the furnace wall have been considered. The results are compared with available experimental and theoretical results from the literature and the disagreements are shown to be apparent and are related to differences in conditions and limitations in the assumptions employed by earlier studies. Two approaches approximate the signal behavior: a linear dependence (∫ Atdt = ml+b) and a proportionality to the length raised to a power Ω(∫ Atdt ∝ lΩ). The latter provides the more accurate fit to the data. The Ω values vary with changes in the dosing hole, heating program and readsorption barrier (i.e. sample/graphite interactions). This factor also seems to be altered by using a platform, but not by changes in the furnace diameter. Deviations between experimental and theoretical Ω values can arise from differences in the heating conditions between furnaces with different lengths. Otherwise, the apparent linear behavior is justified by changes in the loss function only when the tube length is modified, giving an additive behavior for the signal. The signal dependence on furnace length varies with changes in the atomization conditions or the analyte, and this behavior should be taken into account for theoretical considerations when a length dependency has to be assumed." @default.
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- W2024536471 date "1989-01-01" @default.
- W2024536471 modified "2023-09-27" @default.
- W2024536471 title "A Monte Carlo study of GFAA signal dependence on furnace length" @default.
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- W2024536471 doi "https://doi.org/10.1016/0584-8547(89)80020-5" @default.
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