Large volatility range airborne polycyclic aromatic hydrocarbons (PAHs) determination by isotope dilution gas chromatography-mass spectrometry
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Open Access
Type
Report
Language
en
Date
1995-08-31
Research Projects
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Journal Issue
Title
Large volatility range airborne polycyclic aromatic
hydrocarbons (PAHs) determination by isotope dilution gas
chromatography-mass spectrometry
Translated Title
Groot vluchtigheidstraject bepaling van
polycyclische aromatische koolwaterstoffen (PAK�s) in de buitenlucht m.b.v.
gaschromatografie - isotoopverdunning massa
spectrometrie
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Abstract
Een methode is ontwikkeld voor de meting van poly
aromatische koolwaterstoffen (PAK) in de buitenlucht m.b.v.
gaschromatografie - isotoopverdunning massa spectrometrie. De methode was
ontworpen voor de meting van de grootst mogelijke vluchtigheidstraject
binnen de groep inclusief de meestvoorkomende en vluchtige naftalenen. Het
monstervolume bedroeg circa 500 m3 bij een bemonsteringssnelheid van ca. 18
m3/h. Het monstername apparaat bevatte drie sorptie trappen voor de
simultane bemonstering van resp. de deeltjes gebonden fractie, de weinig
vluchtige en de vluchtige PAK�s. De recoverie van de methode bedroeg
gemiddeld ca. 90 %. De detectiegrens was circa 5 pg/m3 voor de
niet-vluchtig en deeltjes gebonden fractie. Resultaten van toepassing van
de methode in een woongebied (Bilthoven) toonden een vrij stabiel profiel
van voorkomen van de belangrijkste PAK congeneren in achtergrondlucht.
Vergelijking van specifieke verhoudingen van bepaalde PAK congeneren met
literatuur gegevens duidde op een belangrijke bijdrage van verkeer aan PAK�s
in lucht.
A method was developed for the measurement for polycyclic aromatic hydrocarbons in ambient air by gas chromatography isotope dilution mass spectrometry. The method was designed to measure the largest possible volatility range of PAHs including the abundant naphthalenes. Samples volumes were approx. 500 m3 in size at a sampling rate of approx. 18 m3/h. The sampler contained three sorption stages for the simultaneous capturing of particle bound and low and high volatile gaseous PAHs, respectively. Recoveries of sampling spikes were on average 90 %. The detection limit was approx. 5 pg/m3 for the high boiling range PAHs. Results obtained showed a quite steady profile for most PAHs in background air in the Netherlands. Comparison of abundance ratios with data in the literature indicate that traffic exhausts were the major source for the PAHs in the area.
A method was developed for the measurement for polycyclic aromatic hydrocarbons in ambient air by gas chromatography isotope dilution mass spectrometry. The method was designed to measure the largest possible volatility range of PAHs including the abundant naphthalenes. Samples volumes were approx. 500 m3 in size at a sampling rate of approx. 18 m3/h. The sampler contained three sorption stages for the simultaneous capturing of particle bound and low and high volatile gaseous PAHs, respectively. Recoveries of sampling spikes were on average 90 %. The detection limit was approx. 5 pg/m3 for the high boiling range PAHs. Results obtained showed a quite steady profile for most PAHs in background air in the Netherlands. Comparison of abundance ratios with data in the literature indicate that traffic exhausts were the major source for the PAHs in the area.
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