Coprecipitation of Trace Amounts of Silicon With Aluminum Hydroxide and the Determination by Flame Atomic Absorption Spectrometry

Shokrollahi, Ardeshir; Gohari, Masoud

doi:10.5935/0100-4042.20140253

Cited by 1 publication

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“…Aluminium hydroxide has been widely used as a collector for the coprecipitation of various analytes [39][40][41][42], and in this research, the objective was to use aluminium hydroxide for the collection of zirconium. Because the Al 3+ ion enhances the zirconium signal in atomic absorption spectrometry [43], it can be an excellent collector as well as an absorption modifier.…”

Section: Introductionmentioning

confidence: 99%

Flame atomic absorption determination of zirconium in glass and refractory bricks after coprecipitation with aluminium hydroxide

Shokrollahi

Gohari

2017

Journal of Taibah University for Science

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A simple preconcentration method for zirconium based on coprecipitation with aluminium hydroxide prior to flame atomic absorption (FAAS) determination was established. The recovery values of the analyte ions were higher than 95%. Such parameters as the type of hydroxide ion source for precipitation, type of acid for the dissolution step, amount of Al 3+ ion as the collector, pH, temperature, standing time and centrifuge time were optimized using 50 mL of a solution containing 150 g of zirconium. The effect of the solution volume and influences of matrix ions on the extraction of the analyte were also examined. Under the optimum conditions, the calibration curve was linear up to 10 mg L −1. The relative standard deviation for solutions containing 150 g of zirconium was found to be 3.9%. The limit of detection (LOD) and limit of quantitation (LOQ) were calculated as 0.17 and 0.57 mg L −1 , respectively. The method is capable of extracting the analyte in different samples with volumes of up to 250 mL. The preconcentration factor for 250 mL and enhancement factor for 50 mL of analyte solution were calculated to be 250 and 40, respectively. The proposed method was successfully applied for the determination of zirconium in glass and refractory brick samples.

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Section: Introductionmentioning

confidence: 99%