An intercomparison study of analytical methods used for quantification of levoglucosan in ambient aerosol filter samples
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Tartalom: http://dx.doi.org/10.5194/amt-8-125-2015
Archívum: MTA Könyvtár
Gyűjtemény: Status = Published


Type = Article
Cím:
An intercomparison study of analytical methods used for quantification of levoglucosan in ambient aerosol filter samples
Létrehozó:
Yttri, K. E.
Schnelle-Kreis, J.
Maenhaut, W.
Abbaszade, G.
Alves, C.
Bjerke, A.
Bonnier, N.
Bossi, R.
Claeys, M.
Dye, C.
Evtyugina, M.
García-Gacio, D.
Hillamo, R.
Hoffer, András
Hyder, M.
Iinuma, Y.
Jaffrezo, J.-L.
Kasper-Giebl, A.
Kiss, Gyula
López-Mahia, P. L.
Pio, C.
Piot, C.
Ramirez-Santa-Cruz, C.
Sciare, J.
Teinilä, K.
Vermeylen, R.
Vicente, A.
Zimmermann, R.
Dátum:
2015-01-09
Téma:
QE Geology / földtudományok
QE04 Meteorology / meteorológia
Tartalmi leírás:
The monosaccharide anhydrides (MAs) levoglucosan,
galactosan and mannosan are products of incomplete
combustion and pyrolysis of cellulose and hemicelluloses,
and are found to be major constituents of biomass burning
(BB) aerosol particles. Hence, ambient aerosol particle
concentrations of levoglucosan are commonly used to study
the influence of residential wood burning, agricultural waste burning and wildfire emissions on ambient air quality. A European-wide intercomparison on the analysis of the three
monosaccharide anhydrides was conducted based on ambient
aerosol quartz fiber filter samples collected at a Norwegian
urban background site during winter. Thus, the samples?
content of MAs is representative for BB particles originating from residential wood burning. The purpose of the intercomparison was to examine the comparability of the
great diversity of analytical methods used for analysis of
levoglucosan, mannosan and galactosan in ambient aerosol
filter samples. Thirteen laboratories participated, of which
three applied high-performance anion-exchange chromatography
(HPAEC), four used high-performance liquid chromatography
(HPLC) or ultra-performance liquid chromatography
(UPLC) and six resorted to gas chromatography (GC).
The analytical methods used were of such diversity that they
should be considered as thirteen different analytical meth
ods. All of the thirteen laboratories reported levels of levoglucosan, whereas nine reported data for mannosan and/or
galactosan. Eight of the thirteen laboratories reported levels for all three isomers.
The accuracy for levoglucosan, presented as the mean percentage error (PE) for each participating laboratory, varied from ?63 to 20 %; however, for 62 % of the laboratories the mean PE was within ±10 %, and for 85 % the mean PE was within ±20 %. For mannosan, the corresponding range was ?60 to 69 %, but as for levoglucosan, the range was substantially smaller for a subselection of the laboratories; i.e. for 33 % of the laboratories the mean PE was within ±10 %. For galactosan, the mean PE for the participating laboratories ranged from ?84 to 593 %, and as for mannosan 33 % of the laboratories reported a mean PE within ±10 %.
The variability of the various analytical methods, as de-
fined by their minimum and maximum PE value, was typically
better for levoglucosan than for mannosan and galactosan,
ranging from 3.2 to 41 % for levoglucosan, from 10 to
67 % for mannosan and from 6 to 364 % for galactosan. For
the levoglucosan to mannosan ratio, which may be used to
assess the relative importance of softwood versus hardwood
burning, the variability only ranged from 3.5 to 24 %.
To our knowledge, this is the first major intercomparison
on analytical methods used to quantify monosaccharide anhydrides in ambient aerosol filter samples conducted and reported in the scientific literature. The results show that for levoglucosan the accuracy is only slightly lower than that reported for analysis of SO2?4 (sulfate) on filter samples, a constituent that has been analysed by numerous laboratories for several decades, typically by ion chromatography and which is considered a fairly easy constituent to measure. Hence, the results obtained for levoglucosan with respect to accuracy are encouraging and suggest that levels of levoglucosan, and to a lesser extent mannosan and galactosan, obtained by most of the analytical methods currently used to quantify monosaccharide anhydrides in ambient aerosol filter samples, are comparable.
Finally, the various analytical methods used in the current
study should be tested for other aerosol matrices and concentrations as well, the most obvious being summertime aerosol samples affected by wildfires and/or agricultural fires.
Típus:
Article
PeerReviewed
Formátum:
text
Azonosító:
Yttri, K. E. and Schnelle-Kreis, J. and Maenhaut, W. and Abbaszade, G. and Alves, C. and Bjerke, A. and Bonnier, N. and Bossi, R. and Claeys, M. and Dye, C. and Evtyugina, M. and García-Gacio, D. and Hillamo, R. and Hoffer, András and Hyder, M. and Iinuma, Y. and Jaffrezo, J.-L. and Kasper-Giebl, A. and Kiss, Gyula and López-Mahia, P. L. and Pio, C. and Piot, C. and Ramirez-Santa-Cruz, C. and Sciare, J. and Teinilä, K. and Vermeylen, R. and Vicente, A. and Zimmermann, R. (2015) An intercomparison study of analytical methods used for quantification of levoglucosan in ambient aerosol filter samples. Atmospheric Measurement Techniques, 8. pp. 125-147. ISSN 1867-1381
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