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DETERMINATION OF TRACE BISMUTH IN WATER BY ION EXCHANGE RESIN PHASE SPECTROPHOTOMETRY

Feng Gui-he

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Abstract

A new analytical method with the ion exchange resin-phase spectorphotometry for determination of traces bismuth was developed. A colored complexes was obtained from Bi(III)ion and pyrocatechol violet and the enriched on ation exchange resin. The concentration of trace bismuth was direct determined by the thin layer of ation exchange resin. the method possessed a better sensitive, selective and rapid characterize and precision (n=5, RSD=3.8% at a level of 5μg Bi). The regression equation is A=0.010+0.0075C (μg/50ml), when the Bi concentration is in the range of 0~10μg/50ml, the correlative coefficient is 0.9997, the recovery is 98%~99% and the detection limit is 3.2μg/L. The method has been used to determine bismuth in water with satisfactory results.

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What this paper is about

A new analytical method with the ion exchange resin-phase spectorphotometry for determination of traces bismuth was developed. A colored complexes was obtained from Bi(III)ion and pyrocatechol violet and the enriched on ation exchange resin. The concentration of trace bismuth was direct determined by the thin layer of ation exchange resin. the method possessed a better sensitive, selective and rapid characterize and precision (n=5, RSD=3.8% at a level of 5μg Bi). The regression equation is A=0.010+0.0075C (μg/50ml), when the Bi concentration is in the range of 0~10μg/50ml, the correlative coefficient is 0.9997, the recovery is 98%~99% and the detection limit is 3.2μg/L. The method has been used to determine bismuth in water with satisfactory results.

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Available abstract

A new analytical method with the ion exchange resin-phase spectorphotometry for determination of traces bismuth was developed. A colored complexes was obtained from Bi(III)ion and pyrocatechol violet and the enriched on ation exchange resin. The concentration of trace bismuth was direct determined by the thin layer of ation exchange resin. the method possessed a better sensitive, selective and rapid characterize and precision (n=5, RSD=3.8% at a level of 5μg Bi). The regression equation is A=0.010+0.0075C (μg/50ml), when the Bi concentration is in the range of 0~10μg/50ml, the correlative coefficient is 0.9997, the recovery is 98%~99% and the detection limit is 3.2μg/L. The method has been used to determine bismuth in water with satisfactory results.

Key concepts: Bismuth, Chemistry, Detection limit, Ion-exchange resin, Ion exchange, Spectrophotometry, Trace Amounts, Analytical Chemistry (journal)

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