An integrated approach for the chemical characterization and oxidative potential assessment of indoor PM2.5

V. Mihucz, Tamás Szigeti, Christina Dunster, Martina Giannoni, Yvonne de Kluizenaar, Andrea Cattaneo, Corinne Mandin, John G. Bartzis, Franco Lucarelli, Frank J. Kelly, G. Záray

Research output: Contribution to journalArticle

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Abstract

An integrated approach has been developed for the multi-component analysis of indoor PM2.5 collected onto the same quartz fiber filter (QFF) by using an innovative combination of techniques such as inductively coupled sector field plasma mass spectrometry (ICP-SF-MS) with vapor-phase microwave-assisted aqua regia or sonication-assisted water extraction, ion chromatography, thermal-optical transmittance as well as high performance liquid chromatography and enzyme-linked 5,5'-dithio-bis(2-nitrobenzoic acid) assay for the determination of elemental composition, major inorganic ions, elemental/organic carbon (EC/OC) as well as oxidative potential (OP) through ascorbate (AA) and reduced glutathione (GSH) depletion, respectively. The low mass of PM2.5 collectable indoors, the elemental blank values of the QFFs and the sample volume/acidity requirements of the ICP-SF-MS represented a challenge for elemental determination. Finally, this approach was successfully applied for determination of 15 elements (Al, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Rb, Sr, Mo, Cd, Sn and Pb) at the ngm-3 level in more than two-thirds of indoor PM2.5 (n=25) collected in mechanically ventilated offices within the European Union project OFFICAIR at increased sampling flow rates (0.6m3h-1-2.3m3h-1) and sampling time (cca. 100h) in the acidic/aqueous extracts. The concentration of Cl-, NO3 -, SO4 2-, Na+, NH4 +, K+, Ca2+, Mg2+, OC and EC was at the μgm-3 level in the aqueous extracts. This new approach aiming at the comprehensive characterization of low mass indoor PM2.5 samples allowed assessment of OPAA and OPGSH in all samples. The PM2.5 critical sample mass to achieve elemental determination was approximately 400μg.

Original languageEnglish
Pages (from-to)22-29
Number of pages8
JournalMicrochemical Journal
Volume119
DOIs
Publication statusPublished - Mar 1 2015

Fingerprint

Mass spectrometry
Nitrobenzoates
Sampling
Plasmas
Ion chromatography
Quartz
Sonication
Opacity
High performance liquid chromatography
Organic carbon
Acidity
Glutathione
Assays
Vapors
Microwaves
Flow rate
Ions
Water
Fibers
Enzymes

Keywords

  • Antioxidant depletion
  • Elemental/organic carbon
  • Inorganic ions
  • Occupational exposure
  • Particulate matter
  • Trace elements

ASJC Scopus subject areas

  • Analytical Chemistry
  • Spectroscopy

Cite this

An integrated approach for the chemical characterization and oxidative potential assessment of indoor PM2.5 . / Mihucz, V.; Szigeti, Tamás; Dunster, Christina; Giannoni, Martina; de Kluizenaar, Yvonne; Cattaneo, Andrea; Mandin, Corinne; Bartzis, John G.; Lucarelli, Franco; Kelly, Frank J.; Záray, G.

In: Microchemical Journal, Vol. 119, 01.03.2015, p. 22-29.

Research output: Contribution to journalArticle

Mihucz, V, Szigeti, T, Dunster, C, Giannoni, M, de Kluizenaar, Y, Cattaneo, A, Mandin, C, Bartzis, JG, Lucarelli, F, Kelly, FJ & Záray, G 2015, 'An integrated approach for the chemical characterization and oxidative potential assessment of indoor PM2.5 ', Microchemical Journal, vol. 119, pp. 22-29. https://doi.org/10.1016/j.microc.2014.10.006
Mihucz, V. ; Szigeti, Tamás ; Dunster, Christina ; Giannoni, Martina ; de Kluizenaar, Yvonne ; Cattaneo, Andrea ; Mandin, Corinne ; Bartzis, John G. ; Lucarelli, Franco ; Kelly, Frank J. ; Záray, G. / An integrated approach for the chemical characterization and oxidative potential assessment of indoor PM2.5 In: Microchemical Journal. 2015 ; Vol. 119. pp. 22-29.
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