Bioaccessibility of selected trace metals in urban PM(2.5) and PM (10) samples: a model study.

Bioaccessibility of selected trace metals in urban PM(2.5) and PM (10) samples: a model study. Research Abstract Details 

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Bioaccessibility of selected trace metals in urban PM(2.5) and PM (10) samples: a model study. Abstract Text:

Thomas Falta,Andreas Limbeck,Gunda Koellensperger,Stephan Hann,Thomas Falta,Andreas Limbeck,Gunda Koellensperger,Stephan Hann,Thomas Falta,Andreas Limbeck,Gunda Koellensperger,Stephan Hann,

Bioaccessibility of trace metals originating from urban particulate matter was assessed in a worst case scenario to evaluate the uptake and thus the hazardous potential of these metals via gastric juice. Sampling was performed over a period of about two months at the Getreidemarkt in downtown Vienna. Concentrations of the assayed trace metals (Ti, Cr, Mn, Co, Ni, Cu, Zn, Mo, Ag, Cd, Sn, Sb, Tl and Pb) were determined in PM(2.5) and PM(10) samples by ICP-MS. The metal concentrations in sampled air were in the low picogram to high nanogram per cubic metre range. The concentrations in PM(2.5) samples were generally lower than those in PM(10) samples. The average daily intake of these metals by inhalation for a healthy adult was estimated to be in the range of <1 ng (Tl) to >1,000 ng (Zn). To estimate the accessibility of the inhaled and subsequently ingested metals (i.e. after lung clearance had taken place) in the size range from 2.5- to 10-mum aerodynamic equivalent diameter, a batch-extraction with synthetic gastric juice was performed. The data were used to calculate the bioaccessibility of the investigated trace metals. Extractable fractions ranged from 2.10% (Ti in PM(2.5)) to 91.0% (Cd in PM(2.5)), thus yielding bioaccessible fractions (PM(2.5-10)) from 0.16 ng (Ag) to 178 ng (Cu).

Bioaccessibility of selected trace metals in urban PM(2.5) and PM (10) samples: a model study. Publishing Authors By Initials

T Falta,A Limbeck,G Koellensperger,S Hann,T Falta,A Limbeck,G Koellensperger,S Hann,T Falta,A Limbeck,G Koellensperger,S Hann,

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Bioaccessibility of selected trace metals in urban PM(2.5) and PM (10) samples: a model study. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Analytical and bioanalytical chemistry

VOLUME: 390

Page Numbers: 1149-57

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ISSN: 1618-2650

DAY: 4

MONTH: 01

YEAR: 2008

Bioaccessibility of selected trace metals in urban PM(2.5) and PM (10) samples: a model study. Information

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LANGUAGE: eng

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Grant and Affiliation Information for Bioaccessibility of selected trace metals in urban PM(2.5) and PM (10) samples: a model study.

AFFILIATION: Division of Analytical Chemistry, University of Natural Resources and Applied Life Sciences - Vienna, Muthgasse 18, 1190, Vienna, Austria.

Country: Germany

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MEDLINETA: Anal Bioanal Chem

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