1979
DOI: 10.1021/ac50044a023
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Flame photometry of phosphorus vaporized from a silica-treated graphite furnace

Abstract: Phosphorus is determined by llame photometry in a fuel-rich H2-air flame using a graphite furnace to vaporize samples prior to introduction into the flame. When untreated graphite tubes are used, calcium and other metals depress phosphorus emission. However, impregnating tubes with SiCI4 followed by hydrolysis to Si02 leads to a substantial reduction in the interference for the lifetime of the furnace. The resulting analytical system has a detection limit of 1 ng phosphorus.

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Cited by 6 publications
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