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Determination of Trace Mercury in Tungsten Concentrates by Hydride Generation Atomic Fluorescence Spectrometry

Xun Li

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Abstract

A method for the determination of mercury in tungsten concentrates by hydride generation atomic fluorescence spectrometry was developed.Optimum working conditions of the instrument were investigated,including flow rate of carrier gas,concentration of potassium tetra-hydroborate solution,and acidity of sample solution.The detection limit obtained for mercury was 0.03 ng/mL,while the relative standard deviation reached 1.9 % under the optimum conditions.The recovery rate was in the range of 96 %~102 %.The method can be applied in the determination of trace mercury in tungsten concentrates.

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A method for the determination of mercury in tungsten concentrates by hydride generation atomic fluorescence spectrometry was developed.Optimum working conditions of the instrument were investigated,including flow rate of carrier gas,concentration of potassium tetra-hydroborate solution,and acidity of sample solution.The detection limit obtained for mercury was 0.03 ng/mL,while the relative standard deviation reached 1.9 % under the optimum conditions.The recovery rate was in the range of 96 %~102 %.The method can be applied in the determination of trace mercury in tungsten concentrates.

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Available abstract

A method for the determination of mercury in tungsten concentrates by hydride generation atomic fluorescence spectrometry was developed.Optimum working conditions of the instrument were investigated,including flow rate of carrier gas,concentration of potassium tetra-hydroborate solution,and acidity of sample solution.The detection limit obtained for mercury was 0.03 ng/mL,while the relative standard deviation reached 1.9 % under the optimum conditions.The recovery rate was in the range of 96 %~102 %.The method can be applied in the determination of trace mercury in tungsten concentrates.

Key concepts: Mercury (programming language), Hydride, Tungsten, Detection limit, Chemistry, Analytical Chemistry (journal), Relative standard deviation, Volumetric flow rate

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