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Extraction-flotation spectrophotometric determination of trace amounts of palladium (II) with bromide and safranine

Tongwen Xu

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Abstract

This paper reports the extraction-flotation spectrophotometric determination of trace amounts of Pd(Ⅱ) in the form of ion associate of Pd(Ⅱ)-Br~--safranine T(ST). The maximum absorbance of the ion associate is at 520 nm. Its molar absorptivity e_(620nm) is 2.2×10~5l·mol~(-1)·cm~(-1) and the ratio of Pd(Ⅱ) to ST is 1:3. The composition of the ion associate is(PdBr_4~(2-)·2 ST~+)· (Br~-·ST~+). Some minerals have been analysed by this method with satisfactory results.

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What this paper is about

This paper reports the extraction-flotation spectrophotometric determination of trace amounts of Pd(Ⅱ) in the form of ion associate of Pd(Ⅱ)-Br~--safranine T(ST). The maximum absorbance of the ion associate is at 520 nm. Its molar absorptivity e_(620nm) is 2.2×10~5l·mol~(-1)·cm~(-1) and the ratio of Pd(Ⅱ) to ST is 1:3. The composition of the ion associate is(PdBr_4~(2-)·2 ST~+)· (Br~-·ST~+). Some minerals have been analysed by this method with satisfactory results.

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Available abstract

This paper reports the extraction-flotation spectrophotometric determination of trace amounts of Pd(Ⅱ) in the form of ion associate of Pd(Ⅱ)-Br~--safranine T(ST). The maximum absorbance of the ion associate is at 520 nm. Its molar absorptivity e_(620nm) is 2.2×10~5l·mol~(-1)·cm~(-1) and the ratio of Pd(Ⅱ) to ST is 1:3. The composition of the ion associate is(PdBr_4~(2-)·2 ST~+)· (Br~-·ST~+). Some minerals have been analysed by this method with satisfactory results.

Key concepts: Chemistry, Molar absorptivity, Absorbance, Palladium, Bromide, Trace Amounts, Extraction (chemistry), Ion

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