Mercury characterisation in urban particulate matter
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Ondřej Zvěřina
,
Rostislav Červenka
Abstract
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.
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© 2012 Institute of Chemistry, Slovak Academy of Sciences
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Articles in the same Issue
- Characterisation of VOC composition of Slovak monofloral honeys by GC×GC-TOF-MS
- Combustion-derived CdO nanopowder as a heterogeneous basic catalyst for efficient synthesis of sulfonamides from aromatic amines using p-toluenesulfonyl chloride
- Molybdate sulfonic acid: preparation, characterization, and application as an effective and reusable catalyst for octahydroxanthene-1,8-dione synthesis
- Enantioselective extraction of hydrophilic 2-chloromandelic acid enantiomers by hydroxypropyl-β-cyclodextrin: experiments and modeling
- Attrition of dolomitic lime in a fluidized-bed reactor at high temperatures
- Improvement of aquatic pollutant partition coefficient correlations using 1D molecular descriptors — chlorobenzene case study
- Mercury characterisation in urban particulate matter
- Thermal decomposition of lanthanide(III) complexes of bis-(salicylaldehyde)-1,3-propylenediimine Schiff base ligand
- Effect of hyamine on electrochemical behaviour of brass alloy in HNO3 solution
- Calorimetric determination of the effect of additives on cement hydration process
- Entrapment of ethyl vanillin in calcium alginate and calcium alginate/poly(vinyl alcohol) beads
- Facile synthesis of 3-substituted quinazoline-2,4-dione and 2,3-di-substituted quinazolinone derivatives
- Virtual screening of imidazole analogs as potential hepatitis C virus NS5B polymerase inhibitors
- A new phenanthroindolizidine alkaloid from Tylophora indica
