Floor dust bacteria and fungi and their coexistence with PAHs in Jordanian indoor environments

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http://hdl.handle.net/10138/307290

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Al-Hunaiti , A , Arar , S , Täubel , M , Wraith , D , Maragkidou , A , Hyvarinen , A & Hussein , T 2017 , ' Floor dust bacteria and fungi and their coexistence with PAHs in Jordanian indoor environments ' , Science of the Total Environment , vol. 601 , pp. 940-945 . https://doi.org/10.1016/j.scitotenv.2017.05.211

Title: Floor dust bacteria and fungi and their coexistence with PAHs in Jordanian indoor environments
Author: Al-Hunaiti, Afnan; Arar, Sharif; Täubel, Martin; Wraith, Darren; Maragkidou, Androniki; Hyvarinen, Anne; Hussein, Tareq
Contributor: University of Helsinki, Department of Physics
Date: 2017-12-01
Language: eng
Number of pages: 6
Belongs to series: Science of the Total Environment
ISSN: 0048-9697
URI: http://hdl.handle.net/10138/307290
Abstract: Floor dust samples were collected from Jordanian indoor environments (eight dwellings and an educational building) in Amman. Quantitative PCR (qPCR) analyses of selected fungal and bacterial groups were performed. The bacterial and fungal concentrations were also correlated with PAHs concentrations, which were previously measured in the same samples by using GC-MS. The bacterial and fungal concentrations varied significantly among and within the tested indoor environments. Based on the collected samples in the entrance area of the dwellings, the largest variation was found in Gram-negative bacteria and total fungi concentration. The lowest bacterial and fungal concentrations were found in the dwelling that was least occupied and the most recently built. At the educational building, the Gram-positive bacteria concentrations were lower than those observed in the dwellings. Unlike for bacteria, we observed significant negative correlation with some polycyclic aromatic hydrocarbons (PAHs). This calls for further studies investigating biodegradation of PAHs in house dust and presence of potentially health hazardous PAH metabolites. Since biocontamination in floor dust has been given relatively little to no attention in the MENA region we recommend that more extensive measurements be conducted in the future with chemical and biological analysis of floor dust contaminants and their exposure indoors. (C) 2017 Elsevier B.V. All rights reserved.
Subject: 116 Chemical sciences
Gram-positive
Gram-negative
Penicillium/Aspergillus spp.
Total fungi
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