مقاله Mercury characterisation in urban particulate matter : تی پی بین

خلاصه مقاله

A five-step sequential extraction procedure was proposed in order to assess the distribution of mercury (Hg) forms in urban particulate matter (PM): exchangeable, HCl-soluble, organic-bound, elemental and other slightly soluble Hg species, mercury(II) sulphide (HgS), and residual Hg. This process was applied to the analysis of urban dust samples collected at locations in Prague (Czech Republic) with high traffic density. In addition to sequential extractions, thermal desorption analysis was performed. The differences in Hg concentrations between untreated and thermally treated samples were indicated as the thermally releasable amount of Hg. For the study of PM-adsorbing capacity, Hg vapours were passed through the samples as long as the enrichment of materials was observed. The retained elemental Hg was readily released by thermal desorption. All Hg analyses were based on the highly sensitive pyrolysis technique of atomic absorption spectrometry using the mercury analyser AMA-254.

نویسندگان

Ondřej Zvěřina [ Department of Chemistry, Faculty of Science, Masaryk University, Kotlářská 2, 611 37, Brno, Czech Republic ]

Rostislav Červenka [ Department of Chemistry, Faculty of Science, Masaryk University, Kotlářská 2, 611 37, Brno, Czech Republic ]

Josef Komárek [ Department of Chemistry, Faculty of Science, Masaryk University, Kotlářská 2, 611 37, Brno, Czech Republic ]

Jiřina Sysalová [ Institute of Chemical Technology, AAS Laboratory, Technická 5, 166 28, Prague 6, Czech Republic ]

کلمات کلیدی

mercury particulate matter sequential extraction thermal desorption

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Chemical Papers 2013

Chemical Papers is devoted to research in pure and applied chemistry and chemical engineering. At its founding in 1947, the journal presented the achievements of Slovak chemical science. Today, it is a peer-reviewed international journal published in English by the Institute of Chemistry of the Slovak Academy of Sciences, with the support of several other academic institutions. Its interdisciplinary coverage brings chemistry research together with related disciplines, including analytical chemistry; (bio)catalysis; biochemistry; chemical (bio)technology; (bio)chemical engineering; chemical physics; drug chemistry; food chemistry; environmental chemistry; inorganic chemistry; macromolecular chemistry; materials chemistry; mathematical chemistry; medical and pharmaceutical chemistry; nanochemistry; organic chemistry; physical chemistry and more.

حوزه های تحت پوشش : Chemistry/Food Science, general, Industrial Chemistry/Chemical Engineering, Biochemistry, generalBiotechnology