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장성기(Seong-Ki Jang),성민영(Min-Young Sung),신아윤(A-Youn Shin),최진수(Jin-Su Choi),손정석(Jung-Suk Son),안준영(Joon-Young Ahn),김종춘(Jong-Chun Kim),신은상(Eun-Sang Shin) 한국환경관리학회 2011 環境管理學會誌 Vol.17 No.3
This study is aimed at finding the characteristics of long-term trends in wet and dry deposition in Korea. NIER(National Institute of Environmental Research) has monitored major ion components of wet and dry deposition since 1999. The institute also has carried out researches in order to estimate the critical loads for ecosystem based on the collected data from 1999 to 2009. Sampling was conducted at 38 acid deposition monitoring sites and major ion components such as SO₄²?, Cl?, NO₃?, NH₄?, Na?, K?, Ca²? and Mg²? were analyzed by using ion chromatograph. The results helped find out changes in acid deposition for ten years(1999∼2009) in Korea. The data from 10 monitoring sites showed that average annual pH for the monitoring period was 5.1 with the maximum pH level of 6.2 in Imsil(2007) and its minimum level of 4.2 in Deajeon(2008). Of 10 monitoring sites, pH levels of Gwangju, Daejeon, Seoul, Taean and Gangwha have decreased and there was not much change of pH in rural areas. The total deposition of sulfur showed a decreasing trend of 1.44, 1.89, 2.02, 1.26, 1.33, 1.28 g/㎡ㆍyear from 2005 to 2010 while the total deposition of nitrogen was 1.29, 1.72, 2.58, 2.14, 2.49, 2.31 g/㎡ㆍyear during the same period showing an increasing trend. Sulfur concentration was lower in 2008 and 2009 compared to that of 2006 and 2007 and, in particular, the concentration monitored at Seoul was slightly higher than others. As for nitrogen, its concentration was observed to be high in some part of the Seoul Metropolitan Area(SMA) and low in 2009.
장성기(Seong Ki Jang),이석조(Seock Jo Lee),유승화(Seung Wha Yoo),정경미(Kyung Mi Jung),류정민(Jung Min Ryu) 한국실내환경학회 2004 한국실내환경학회지 Vol.1 No.1
Recently, concern about Sick House Syndrome (SHS) has been increased in Korea. And it is suspected that formaldehyde (HCHO) and volatile organic compounds (VOCs) are major factors for SHS. This study was surveyed the indoor air quality in new apartments in Korea. The HCHO and VOCs were measured at 90 sites and analysed by HPLC-UV and GC/MS, respectively. The range of HCHO concentrations at 90 sites were 9.39∼248.78㎍/㎥ and the mean value 105.41㎍/㎥ and the concentrations of HCHO at 42 sites (46.7%) exceeded the indoor air quality guideline (100㎍/㎥) in Japan. Among the 4 VOCs, toluene concentrations were the highest and the mean value 127.33㎍/㎥ and that concentrations at 12 sites (13.8%) were exceeded the indoor air quality guideline (260㎍/㎥) in Japan. There was a tendency which the longer the movement and measurement period is, the more the pollutants concentration is decreased. HCHO and VOCs concentrations of domestic results was similar to Japan"s survey results in 2000.
신축 공동주택에서 밀폐시간 증가에 따른 실내공기 오염물질의 농도변화
장성기(Seong-Ki Jang),임수길(Soo-Gil Lim),이태형(Tae-Hyung Lee),천재영(Jae-young Chun),류정민(Jung-Min Ryu),서수연(Soo-Yun Seo) 한국실내환경학회 2006 한국실내환경학회지 Vol.3 No.4
This study was carried out to evaluate the characteristics of volatile organic compounds (VOCs) and aldehydes emission as a function of airtight time in new apartment. Sampling was undertaken at 34 new apartments located in 4 different cities of Korea from February to November 2005. The measurement data were collected every one hour from 10 a.m. to 6 p.m. toward increasing airtight time in a day. The concentrations of VOCs and aldehydes were analysed by GC/MS and HPLC method, respectively. These methods showed good sensitivity, linearity, and repeatability. In this study, the most abundant compounds at new apartments appeared to be toluene, m,p-xylene, formaldehyde and acetone. Moreover, the concentration variations at a closed rooms progressively increased by airtight time of 5 hours. Airtight time of new apartment was a most important and affective factor which influenced concentration change.
거주기간 증가에 따른 신축 공동주택의 실내오염도 변화추이
장성기(Seong Ki Jang),류정민(Jung Min Ryu),서수연(Soo Yun Seo),임정연(Jung Yeon Lim),이우석(Woo Seok Lee) 한국분석과학회 2007 분석과학 Vol.20 No.6
신축공동주택의 실내공기질에 영향을 미치는 휘발성유기화합물 및 카보닐화합물의 농도와 입주후 거주기간에 따른 오염도 변화추이를 파악하고자 입주 후 신축 공동주택 120세대를 대상으로 실내공기 오염도를 조사하였다. 신축 공동주택 입주 후 TVOC (Total Volatile Organic Compounds; TVOCs)평균농도는 688.61 ㎍/㎥으로 나타났으며, 포름알데히드, 톨루엔, m, p-자일렌, 아세톤, 에틸벤젠이 158.56 ㎍/㎥, 146.58 ㎍/㎥, 69.28 ㎍/㎥, 63.80 ㎍/㎥, 29.65 ㎍/㎥의 순으로 높게 나타났다. 또한, 대부분의 실내오염물질들은 입주 후 거주기간이 증가함에 따라 평균농도가 감소하는 경향을 나타내었으나, d-리모넨의 경우 입주 후 2개월에서 10개월까지 지속적으로 증가하는 것으로 나타났다. 또한, 톨루엔, 에틸벤젠, m, p, o-자일렌 등의 주요오염물질이 전체 VOCs에서 차지하는 비율은 38.8%로 나타났으며, 거주기간에 증가함에 따라 구성비율이 감소하는 것으로 나타났다. This study is for investigation of indoor conditions with air contamination after occupation 120 households in brand-new apartments by measuring the concentration of VOCs and carbonyl compounds. It has been found that TVOC (total volatile organic compounds; TVOCs) were 688.61 ㎍/㎥ after moving in. And formaldehyde, toluene, m, p-xylene, acetone and ethylbenzene were 158.56 ㎍/㎥, 146.58 ㎍/㎥, 69.28 ㎍/㎥, 63.80 ㎍/㎥ and 29.65 ㎍/㎥, respectively. The mean concentrations of indoor air pollutants tend to decrease along an increase dwelling period. But, the mean concentration of d-limonene increased from 2 months to 10 months. Also, toluene, ethylbenzene, m, p, o-xylene amounted to 38.8 % among VOCs studied, this ratio tend to decrease along with and increased dwelling period.