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Microanalysis of the Floor Dust Particles in the Classrooms of Tropical Urban Environment

Microanalysis of the Floor Dust Particles in the Classrooms of Tropical Urban Environment Floor dust particles collected from schools located in tropical urban India were analyzed for morphological characteristics, heavy metals and for assessing the associated health risks. The floor dust particles were collected twice each day (before and after teaching hours) for 12 days from each microenvironment for the analysis. The morphological characteristics of dust particles were found to differ from schools to schools due to their contrasting locations. The total average concentrations of heavy metals such as Ba, Cd, Co, Cr, Cu, Mn, Ni, Pb, V, and Zn were found to be higher in KV IIT (school in urban background) (414 ± 182 mg kg−1), followed by KV CLRI (school in urban roadside) (319.8 ± 162.3 mg kg−1) and MGHS (school in industrial area) (96.45 ± 27.93 mg kg−1). Chalk dust, crustal sources, and vehicular exhaust emissions were the significant contributor to floor dust in schools. Health risks of toxic heavy metals due to ingestion, inhalation and dermal contact exposure to school children were assessed. Health risk assessment results indicated that dermal contact exposure to Ba, Cu, Pb, and V could develop non-cancer risks among school children. The inhalation cancer risks of Co, Cr, and Ni were found to be within safe limits. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of The Institution of Engineers (India): Series A Springer Journals

Microanalysis of the Floor Dust Particles in the Classrooms of Tropical Urban Environment

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Publisher
Springer Journals
Copyright
Copyright © 2019 by The Institution of Engineers (India)
Subject
Engineering; Civil Engineering
ISSN
2250-2149
eISSN
2250-2157
DOI
10.1007/s40030-019-00362-2
Publisher site
See Article on Publisher Site

Abstract

Floor dust particles collected from schools located in tropical urban India were analyzed for morphological characteristics, heavy metals and for assessing the associated health risks. The floor dust particles were collected twice each day (before and after teaching hours) for 12 days from each microenvironment for the analysis. The morphological characteristics of dust particles were found to differ from schools to schools due to their contrasting locations. The total average concentrations of heavy metals such as Ba, Cd, Co, Cr, Cu, Mn, Ni, Pb, V, and Zn were found to be higher in KV IIT (school in urban background) (414 ± 182 mg kg−1), followed by KV CLRI (school in urban roadside) (319.8 ± 162.3 mg kg−1) and MGHS (school in industrial area) (96.45 ± 27.93 mg kg−1). Chalk dust, crustal sources, and vehicular exhaust emissions were the significant contributor to floor dust in schools. Health risks of toxic heavy metals due to ingestion, inhalation and dermal contact exposure to school children were assessed. Health risk assessment results indicated that dermal contact exposure to Ba, Cu, Pb, and V could develop non-cancer risks among school children. The inhalation cancer risks of Co, Cr, and Ni were found to be within safe limits.

Journal

Journal of The Institution of Engineers (India): Series ASpringer Journals

Published: Mar 14, 2019

References