Determination of antimony in ores and related materials by continuous hydride-generation atomic-absorption spectrometry after separation by xanthate extraction

Donaldson, Elsie M.

doi:10.1016/0039-9140(90)80134-2

Cited by 9 publications

(4 citation statements)

References 20 publications

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“…Solvent extraction and selective adsorption can successfully remove many problematic elements prior to analysis allowing improved quality of analytical data. 18,20 In one particular study, a selective adsorption procedure was utilised for the analysis of river water samples and analyte concentrations were determined at around 0.1 ng mL 21 , however, the detection limit was not quoted. 20 Whilst the advantages of aqueous sample preparation are evident, their application to environmental samples requires careful consideration.…”

Section: Total Antimony Determinationsmentioning

confidence: 99%

“…Matrix digestion, liquid sample introduction and subsequent detection with AAS, ICP-AES and ICP-MS is often used for the determination of total antimony in rocks, soils and sediments. 18,30,34,86,99,100,104,106 The use of hydride generation in conjunction with ICP-AES is the most commonly used detection system and improved sensitivity resulting from the production of volatile SbH 3 30,34,99,106 allows detection limits for digested solids in the region of 0.4±0.8 ng mL 21 . Slurry sampling techniques are also used for total antimony determinations in solid matrices and the analyses of airborne particulate material, soils and sediments are reported using AAS detection systems.…”

Section: Detection Systemsmentioning

confidence: 99%

“…The presence of high As content in solid samples is reported to interfere with Sb determination using HG-AAS as a result of depressive gas phase reactions during the atomisation. 18 However, other interferences are reported to result from elements such as Al, Ge, Ni, Sn and Si. 86,107 The removal of matrix ions prior to analysis can alleviate interference effects resulting from solid sample analysis and this is achieved by the application of selective extraction or co-precipitation procedures.…”

Section: Detection Systemsmentioning

confidence: 99%

“…86,107 The removal of matrix ions prior to analysis can alleviate interference effects resulting from solid sample analysis and this is achieved by the application of selective extraction or co-precipitation procedures. 18 Spectral interferences from Si during slurry sample analysis can also be removed by use of HF at concentrations of 40±60% in the suspension medium. This facilitates the removal of Si from the sample during the heating phase with no detrimental effects to analytical instrumentation.…”

Section: Detection Systemsmentioning

confidence: 99%

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Methodologies for determination of antimony in terrestrial environmental samples

Nash

Maskall

Hill

2000

J. Environ. Monitor.

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Methodologies for the environmental analysis of total antimony and aqueous chemical speciation are critically reviewed, including preparation techniques for aqueous and solid matrices and the determination of solid state partitioning and recommendations are given for future research directions. Concentrations of total antimony commonly present in aqueous and solid environmental samples are readily determined using present day analytical techniques. This has resulted primarily from technological advances in microwave digestion for solid matrices and the development of plasma based analyte detection systems. ICP-AES and ICP-MS techniques are both utilised for the environmental analysis of total antimony concentrations. However, ICP-MS is increasingly favoured as a result of reduced spectral interferences and the potential for analyte detection in the pg mL(-1) range. Determination of aqueous antimony speciation presents a number of complex analytical challenges and highly selective separation and identification techniques are required prior to detection. The majority of published techniques including common applications of hydride generation are insufficiently selective for the determination of intrinsic chemical speciation and often only oxidation state data are obtained. The recent in-line applications of HPLC-ICP-MS offer the potential for highly selective separations of aqueous antimony species and determination of detailed chemical speciation data. However, considerable development work is required to optimise chromatographic separations and identify uncharacterised species resident in environmental systems. Analytical techniques to aid the determination of antimony's associations with solid environmental matrices include the application of chemical extraction procedures and leaching experiments. To date, this area of analytical research has received little attention and further studies are required to elucidate this aspect of antimony's environmental chemistry.

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