Speciation of antimony in airborne particulate matter using ultrasound probe fast extraction and analysis by HPLC-HG-AFS

• Published in: Analytica chimica acta Vol. 649; no. 2; pp. 191 - 195
• Main Authors: Bellido-Martín, A., Gómez-Ariza, J.L., Smichowsky, P., Sánchez-Rodas, D.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 07.09.2009; Elsevier
• Subjects: Air Pollutants - analysis; Air Pollutants - isolation & purification; Airborne; Analytical chemistry; Antimony; Antimony - analysis; Antimony - isolation & purification; Chemistry; Chromatographic methods and physical methods associated with chromatography; Chromatography, High Pressure Liquid - methods; Exact sciences and technology; High Performance Liquid Chromatography-Hydride Generation-Atomic Fluorescence Spectrometry; Other chromatographic methods; Particulate matter; Particulate Matter - analysis; Particulate Matter - chemistry; Solvents - chemistry; Speciation; Spectrometric and optical methods; Spectrometry, Fluorescence - methods; Spectrophotometry, Atomic - methods; Ultrasonics; Ultrasound probe; Antimony; Particulate matter; Speciation; Airborne; Ultrasound probe; High Performance Liquid Chromatography-Hydride Generation-Atomic Fluorescence Spectrometry; Sonication; Ascorbic acid; HPLC chromatography; Citrate; Chromatography-Hydride; Hydrides; Mobile phase; Tartrate; Atomic fluorescence spectrometry; Spectrometry; Sample preparation; Ultrasound; Phosphoric acid; High performance; Antimony III; Phthalic acid; Generation-Atomic Fluorescence; Isocratic condition; Citric acid; Antimony V; Hydridation; Suspended particle; High Performance Liquid; Aerosols; Aqueous solution
• ISSN: 0003-2670; 1873-4324
• DOI: 10.1016/j.aca.2009.07.036

A fast extraction procedure has been developed for Sb(III) and Sb(V) oxoanions speciation in airborne particulate matter samples. Different extraction media (diammonium tartrate, hidroxilammonium clorhidrate, citric acid + ascorbic acid, phosphoric acid and citrate solutions) were tried, with assistance of an ultrasonic probe. The operation power and time of extraction were also optimized. The higher extraction recoveries were obtained with a 100 mmol L −1 hidroxilammonium clorhidrate aqueous solution assisted by the ultrasound probe operated at 50 W during 3 min. The extracts were analyzed by HPLC-HG-AFS. The chromatographic separation of Sb(III) and Sb(V) was also optimized using diammonium tartrate and phthalic acid as mobile phases. The separation of both Sb species was performed in less than 3 min under isocratic conditions, using a 200 mmol L −1 diammonium tartrate solution. The proposed extraction procedure and the HPLC-HG-AFS instrumental coupling have been successfully applied to airborne particulate matter samples, with high Sb content, collected in heavy traffic streets from Buenos Aires (Argentina). The results showed the presence of both Sb species at similar concentrations in the ng m −3 level. The extraction yield was higher than 90% for all the analyzed samples.