The three air quality monitoring sites, analysed simultaneously PM-10 and PM-2.5, ie. Ihyeondong in industrial area, Manchondong in residential area, Pyeongnidong in streetside, among 13 air quality monitoring sites in Daegu area, were investigated the concentration distribution characteristics of PM-2.5 and PM-10 in the last 2 years (2011~2012). PM-10 concentrations exceeded annual average reference value (50 µg/m 3 ) in Ihyeondong (52.5 µg/m 3 ) and Pyeongnidong (60.9 µg/m 3 ) but satisfied in Manchondong (44.9 µg/m 3 ). All PM-2.5 concentrations exceeded EPA annual standard value of the United States (15 µg/m 3 ) in three points, but also exceeded new control annual standard value (25 µg/m 3 ) coming into effect in 2015. 요약 : 대구지역의 13개 대기오염측정소 중 PM-10과 PM-2.5를 동시에 측정하는 3개 측정소 즉, 공업지역에 위치한 이현동, 주거지역에 위치한 만촌동, 도로변에 위치한 평리동 측정소를 대상으로 최근 2년간(2011~2012)의 자료를 이용하여 PM-10과 PM-2.5의 농도분포 특성을 연구하였다. PM-10 농도는 이현동(52.5 µg/m 3 )과 평리동(60.9 µg/m 3 ) 모두 연평균 기준치인 50 µg/m 3 을 초과하였고, 만촌동(44.9 µg/m 3 )은 기준치를 만족하였다. PM-2.5 농도는 세 지점 모두 미국의 EPA 연간기준치(15 µg/m 3 )를 초과하였으며, 우리나라에서 2015년부터 시행되는 PM-2.5의 연평균기준치(25 µg/m 3 )도 초과하는 수준이었다. 계절 별 변화를 보면, PM-10은
Objectives: This study evaluated the regional and seasonal concentrations of ambient hazardous heavy metals in an industrial complex area in Daegu City.Methods: A total of 64 SPM (Suspended Particulate Matter) samples were collected in non-industrial and industrial areas during 2014 and were analyzed for hazardous heavy metals elements (As, Cd, Mn, Ni, Pb) with ICP after acid extraction.Results: SPM and hazardous heavy metals concentrations showed regional (industrial complex area>nonindustrial complex area) and seasonal (spring, winter>fall, summer) variations. All of the hazardous heavy metals were influenced by anthropogenic sources. The pollution index of hazardous heavy metals was very low, showing roughly one-quarter of the level of the air quality guidelines of WHO. The correlation analysis among SPM and hazardous heavy metals indicated that components of non-industrial complex areas were more related to each other than those of industrial complex areas, and the correlation in the winter was higher than in other seasons.
Conclusion:It is necessary to control air pollution sources and establish related policy because hazardous heavy metals from industrial areas can influence residential areas.
This study was carried out to characterize the ambient VOCs concentrations of industrial complex in Daegu city. VOCs concentrations of industrial complex area appeared to be higher than those in the non-industrial complex area as following order toluene > ethylbenzene > m,p-xylenes > o-xylene but benzene and chloroform were similar to each other sites. There was seasonal variation of VOCs concentrations in the industrial complex area, higher in summer and lower in winter. In particular the industrial complex area shows that higher on weekday than weekend and higher in the daytime than in the morning or nighttime because industrial complex area influenced by the chemicals. Correlation coefficients among VOCs were confirmed that VOCs of industrial complex area were more related to each other than those of non-industrial complex area and VOCs concentrations have shown generally negative correlation with wind speed.
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