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Characterization of Bioaerosols and their Relation with OC, EC and Carbonyl VOCs at a Busy Roadside Restaurants-Cluster in New Delhi

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Title Characterization of Bioaerosols and their Relation with OC, EC and Carbonyl VOCs at a Busy Roadside Restaurants-Cluster in New Delhi
 
Creator Agarwal, Smita
Mandal, Papiya
Majumdar, Dipanjali
Aggarwal, Shankar G
Srivastava, Anjali
 
Subject Air Pollution
 
Description Measurement of biological particles (bioaerosols) in ambient air is of great importance as it is directly linked with the
health issues. However, data on the bioaerosols characterization are scarce. Here we report on the concentration and
characterization of bioaerosols (including bacterial and fungal aerosols) as well as determination of organic and elemental
carbon (OC and EC) in total suspended particulate matter (TSPM) at a busy roadside restaurants-cluster site in New Delhi.
In addition, 14 carbonyl volatile organic compounds (carbonyl VOCs) were also measured and their relationship with
bioaerosols and OC/EC is assessed. The culturable airborne bacterial and fungal concentrations (CAB and CAF) at
restaurant area varied significantly in different seasons ranging from 1.7 × 104–9.8 × 104 (averaged 6.3 × 104 ± 2.6 × 104
cfu m–3) and 3.5 × 102–9.5 × 103 (3.9 × 103 ± 3.1 × 103 cfu m–3) cfu m–3, respectively. Major concentration peaks of TSPM,
OC, EC as well as bacterial and fungal aerosols were found in winter and spring seasons. These peaks can be attributed to
the low atmospheric boundary layer (ABL) height and favourable meteorological conditions for microbial growth in
winter and spring seasons in New Delhi. Good correlations (R2 > 0.5) were observed between CAB, CAF, TSPM and OC.
On the other hand, CAB and CAF were not found to be correlated with carbonyl compounds (R2 < 0.2) indicative of their
diverse sources. The bacterial identification was done by 16s rDNA sequencing and the identified strains were Bacillus sp.,
Bacillus firmus, Bacillus licheniformis, Bacillus cereus, Bacillus pumilus, Acinetobacter sp. and Acinetobactor radioresistens
gene. Predominant fungal genera identified were Aspergillus, Cladosporium, Alternaria and Fusarium, which are known
for adverse health effects causing numerous allergic and pathogenic inflammations.
 
Publisher Taiwan Association for Aerosol Research
 
Date 2016-12
 
Type Article
PeerReviewed
 
Format application/pdf
 
Identifier http://neeri.csircentral.net/666/1/Bioaerosol_AAQR-2016.pdf
Agarwal, Smita and Mandal, Papiya and Majumdar, Dipanjali and Aggarwal, Shankar G and Srivastava, Anjali (2016) Characterization of Bioaerosols and their Relation with OC, EC and Carbonyl VOCs at a Busy Roadside Restaurants-Cluster in New Delhi. Aerosol and Air Quality Research, 16 (12). pp. 3198-3211. ISSN 1680-8584 Print 2071-1409 Online
 
Relation http://aaqr.org/
http://neeri.csircentral.net/666/