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제주시 도심지역에서 PM10과 PM2.5의 조성 특성

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Alternative Title
Chemical Composition of PM10 and PM2.5 at the Downtown of Jeju City, Korea
Abstract
Ambient PM10 and PM2.5 in this research was taken at 48-h or 72-h
intervals at the downtown of Jeju City from October 2013 through February
2015. In this research, 23 elements and 8 soluble ionic species were determined
using inductively coupled plasma-mass spectrometer (ICP-MS) and ion
chromatographic system (IC). The objective of this research was to assess the
composition and contents of soluble ions and metal elements in PM10 and PM2.5
and to identify the possible sources of ambient particulate matter using principal
component analysis (PCA).
The average concentrations of PM10 and PM2.5 in the downtown of Jeju City
were 26.45 and 18.35 ㎍/m3, respectively. The ratio of PM2.5/PM10 was
approximately 0.69. This result indicates that most of the PM10 is composed of
PM2.5 and these particles may have similar sources.
SO4
2-, NH4
+ and NO3
- were the most abundant species in both of PM10 and
PM2.5. These three species accounted for 80.3% and 92.4% of total ionic
concentrations in PM10 and PM2.5, respectively. On the other hand, the
contribution of other species (i.e., Na+, Mg2+, Ca2+, K+, Cl-) to total ionic
concentration was very low in both of PM10 and PM2.5. From the ratio of
PM2.5/PM10 for each ion species, SO4
2- and NH4
+ was over 0.5, NO3
- show the
value of 0.45, and Na+ and Cl- from sea salts and Mg2+ and Ca2+ from Soil
exhibited values lower than 0.3. Based on total ionic concentration, the
contribution of SO4
2-, NH4
+ and NO3
- was 58.9% in the coarse fraction and
92.4% in the fine fraction, while that of the other ionic species such as Na+,
Mg2+, Ca2+, Cl- was 38.8% in the coarse fraction and only 5.9% in the fine
fraction.
It was found that the concentration of elements such as Na, Ca, Al, Fe, K,
Mg, Zn, Pb, and Mn contained in PM10 and PM2.5 were much higher than that
of any other trace elements. Based on a simple comparison of the metal
concentrations by their magnitude, the data sets can be arbitrarily grouped intotwo categories on the basis of the concentration of 10 ng/m3. The ratio of
PM2.5/PM10 for Al, Ca, Fe, Mg and Na was lower than 0.35, while that for the
other elements was higher than 0.5. By setting the arbitrary enrichment
factor(EF) value of 10, several elements such as Sr, K, Ba, Ca, Mg, Mn
contained in PM10 and PM2.5 had relatively lower EF values, while the
anthropogenically-derived elements, including Se, As, Cu, Zn, V, Ni, Cd, and Cr,
exhibited high EF values above 10.
The results of the principal components analysis of the 18 metal elements
and 4 ionic species were not readily interpreted. Nevertheless, five source
categories of PM2.5 and PM10 provided the explanation for the data. About 71%
of average PM10 was attributed to crustal material, fuel combustion such as
coal, sea salts and resuspension dust, road dust and traffic-related particles, and
secondary particles. Five principal components provided the explanation with
about 72% of average PM2.5. These results indicated that secondary particles/fuel
combustion processes, soil dust, sea salts/resuspension dust, and oil
combustion/road traffic might be the sources of PM2.5.
Author(s)
고태웅
Issued Date
2015
Awarded Date
2015. 8
Type
Dissertation
URI
http://dcoll.jejunu.ac.kr/jsp/common/DcLoOrgPer.jsp?sItemId=000000007307
Alternative Author(s)
Ko, Tae-Woong
Department
대학원 환경공학과
Table Of Contents
Ⅰ. 서론 1
Ⅱ. 문헌 연구 3
2.1. 미세먼지의 물리적 특성 3
2.2. 미세먼지의 화학적 특성 8
2.2.1. 이온성분의 조성 8
2.2.2. 원소성분의 조성 12
2.3. 주성분분석법을 이용한 오염기원 추정 16
Ⅲ. 연구내용 및 방법 19
3.1. 시료채취 19
3.1.1. 시료채취 지점 20
3.1.2. 시료채취 기간 21
3.1.3. 시료채취 기기 21
3.2. 측정 및 분석 23
3.2.1. 질량농도 측정 23
3.2.2. 이온성분 분석 24
3.2.3. 원소성분 분석 26
Ⅳ. 결과 및 고찰 29
4.1. PM10과 PM2.5의 질량농도 29
4.2. PM10과 PM2.5의 조성특성 33
4.2.1. 이온성분의 조성 33
4.2.2. 원소성분의 조성 47
4.3. 오염기원 추정 55
4.3.1. 상관성 분석 55
4.3.2. 주성분분석을 이용한 오염기원 추정 58
Ⅴ. 결론 62
Ⅵ. 참고문헌 64
Degree
Master
Publisher
제주대학교 대학원
Citation
고태웅. (2015). 제주시 도심지역에서 PM10과 PM2.5의 조성 특성
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General Graduate School > Environmental Engineering
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