|
KMID : 1156220110370040279
|
|
Journal of Environmental Health Sciences
2011 Volume.37 No. 4 p.279 ~ p.288
|
|
|
Chemical and Microbiological Hazard Analysis of Floor-Settled Dust in Elementary School Classrooms in Korea
|
|
Kim Ji-Young
Jung Se-Young
Kim Soo-Jung
Kim Jin-Ah
Si Ji-Yeon
Jo Yeon-Woo
Zoh Kyung-Duk
Ko Gwang-Pyo
|
|
|
Abstract
|
|
|
Objectives: This study investigated the levels and components of floor-settled dust in two elementary schools located at different sites (one near the Shihwa industrial complex and the other in a rural area) in order to evaluate the amounts of trace metal elements (As, Cd, Co, Cr, Cu, Ni, Pb and Zn) and microorganisms.
Methods: Over twenty settled-dust samples were collected from the two elementary schools. Trace metal elements were extracted from the dust using hydrochloric acid and nitric acid, and the amounts were measured by ICP-OES.
Microbiological analysis was performed by bacterial culturing using R2A medium and denaturing gradient gel electrophoresis (DGGE).
Results: The results showed that the amounts of three metal elements (Cr, Pb, and Zn) were significantly different between the schools (α=0.05, p<0.04). In addition, microbial communities in each school were highly correlated with one another. Among the identified microorganisms, a number of potentially opportunistic microorganisms, including antibiotic-resistant bacteria such as Acinetobacter baumannii, were found.
Conclusions: This study will provide preliminary data for assessing levels and types of chemical and microbiological agents in elementary schools and for further evaluating human health risks associated with the agents.
|
|
|
KEYWORD
|
|
|
Bacterial antibiotic resistance, Denaturing gradient gel electrophoresis, Dust, Heavy metals, Shihwa industrial complex
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|
|