석탄회 재활용 및 콘크리트 화학혼화제 기술을 선도하는 기업

정권수(Kweon-Soo Jung) 한국콘크리트학회 2007 콘크리트학회지 Vol.19 No.4

어린이용 화장품에 사용되는 보존제 및 함유량 조사

정삼주 ( Sam Ju Jung ),황영숙 ( Young Sook Hwang ),최채만 ( Chae Man Choi ),박애숙 ( Ae Suk Park ),김수언 ( Su Un Kim ),김현정 ( Hyun Jung Kim ),김정헌 ( Jung Hun Kim ),정권 ( Kweon Jung ) 대한화장품학회 2015 대한화장품학회지 Vol.41 No.3

This study was conducted to determine 10 preservatives (benzyl alcohol (BAl), phenoxyethanol (PE), benzoic acid (BA), sorbic acid (SA), methyl paraben (MP), ethyl paraben (EP), propyl paraben (PP), isopropyl paraben (IPP), butyl paraben (BP), isobutyl paraben (IBP)) levels in 125 cosmetics (n = 125) for children by the simultaneous analysis of HPLC. The detection ranges were as follows; 0.01 ~ 0.91% (n = 35) for PE, 0.01 ~ 0.48% (n = 28) for BA, 0.01 ~ 0.78% (n = 9) for BAl, 0.01 ~ 0.11% (n = 3) for SA, 0.04 ~ 0.21% (n = 8) for MP, 0.02 ~ 0.09% (n = 8) for PP, and 0.04% (n = 1) for EP. The order of detection rates was cleanser (63%) > cream (48%) > sunscreen (46%) > lotion (38%) > oil (13%). At least one of target preservatives was contained in 50% (63/125) of samples and the content of the detected preservatives was within maximum allowed amount established by KFDA. Phenoxyethanol and benzoic acid were used more frequently than paraoxybenzoate esters (parabens) in cosmetics for children and the detected parabens was mainly the mixture of methyl paraben and propyl paraben.

Hood Method를 이용한 직화구이 음식점의 미세먼지 배출 특성

이준복,김흥주,정권,김신도,Lee, Jun-Bok,Kim, Heung-Joo,Jung, Kweon,Kim, Shin-Do 한국환경보건학회 2009 한국환경보건학회지 Vol.35 No.4

Under-fired charbroiling cooking processes are known as important contributors of particulate matter (PM). In this study, we characterized the emission of particulate matters from under-fired charbroiling cooking processes using the hood method. Accumulated mass concentration of $PM_{10}$ was 92.2~99.5% and particle size of 2.0~2.5 ${\mu}m$ was highest. The concentration of PM increased very sharply at the beginning of charbroiling meats and then gradually decreased as the charbroiling continued. PM concentration also increased very sharply when gravy from meat spilled onto the frame of fire. However, mass concentration during charbroiling using only charcoals was very low compared to that of meats. We estimated the emission factors of charcoal, pork belly and pork shoulder respectively; 0.01~0.02 g/kg, 5.02~6.26 g/kg, 2.86~4.15 g/kg of $PM_{2.5}$, 0.01~0.03 g/kg, 7.44~7.91 g/kg, 4.54~5.56 g/kg of $PM_{10}$, and 0.02~0.05 g/kg, 7.59~7.95 g/kg, 4.93~5.68 g/kg of TSP. The emission factors of charcoal were negligible and the emission factors of pork belly were higher than that of pork shoulder. Emission rates of particulate matters from under-fired charbroiling cooking process were estimated as 578,009~1,265,152 kg/yr of $PM_{2.5}$, 917,539~1,598,619 kg/yr of $PM_{10}$ and 996.358~1,606,703 kg/yr of TSP. But emission factors should be verified with an in-stack cascade impactor because the reported method involves some assumptions.

서울시내 어린이 놀이터 토양오염도 평가

이준복,김교붕,정권,김민영,Lee, Jun-Bok,Kim, Gyeo-Bung,Jung, Kweon,Kim, Min-Young 한국환경보건학회 2006 한국환경보건학회지 Vol.32 No.4

This survey study was performed to evaluate the pollution level of playgrounds for children at 49 different sampling sites in Seoul metropolitan. Results were as follows. 1. Soil pH ranged from 6.0 to 9.2. 2. Average concentrations of heavy metals were 0.101 mg/kg of Cd, 4.470 mg/kg of Cu, 0.10 mg/kg of As, 5.35 mg/kg of Pb, 0.017 mg/kg of $Cr^{6+}$ 0.0051 mg/kg of Hg, which were lower than Korean soil precaution level. 3. The SPCs of all areas were below 100, which is 1st grade. In conclusion, the pollution level of playgrounds for children was safe.

하수슬러지를 이용한 음식물쓰레기 소멸화 가능성 평가

배일상 ( Il-sang Bae ),정권 ( Kweon Jung ),유병태 ( Byung-tae Yu ),엄석원,이동훈 ( Dong-hoon Lee ),( Eun-mi Jun ) 유기성자원학회 2002 학술대회 발표자료집 Vol.2002 No.1

토양미생물제제에 의한 음식폐기물의 퇴비화 검토

배일상(Il-sang Bae),정권(Kweon Jung),전은미,김광진,이동훈(Dong-Hoon Lee) 유기성자원학회 2000 유기물자원화 Vol.8 No.4

음식물 퇴비화를 위한 토양미생물제 재의 퇴비화 효율을 평가하며 토양미생물제재의 미생물수와 퇴비화과정에서 식종의 효과를 조사하였다. 분석대상 음식물은 본 연구원 구내식당에서 수거한 후 물리화학적특성을 분석하였다. 대상시료는 Bulking Agent로서 톱밥을 사용하여 함수율을 65%로 조정 후 반응기 B에 10%의 토양미생물제를 식종하였다 토양미생물제제의 미생물은 호기성세균수가 2.98 x 1Q9!g이상, 방선균이 3.93 x lQ'!g이상, 효모가 1. 21X 1Q5jg, 균류가 5,79 x lQ' jg 이상이었다. 퇴비화 기간동안 최고온도는 Reactor A가 반응 10 일후에 응 개시후 바로 급격한 변화를 보였으며, 반응이 종료된 후 두 Reactor 공히 pH8.9를 나타내었다. Reactor B의 경우 최대옹도인 4 일후에 C02농도도 역시 최대인 10.8%를 나타냈으며, Reactor A 는 최대온도인 10 일후에 6.1%를 나타내었다. 한편 Reactor A는 rd(유기물질의 분해율)치가 0.35 에서 0.41로 17.1%상승하였으며, Reactor B의 경우 0.31에서 0.51로 64.5%상승하였다. This study was performed to evaluaκ efficiency of soil microbial inoculator for active composting of food waste. In addition, rhe number of microorganisms in soil microbial inocularor and the effect of seeding in the procεss of composting were invesrigared. Food wasre samples collected from a refecrory were analyzed for physical-chemical properties, The samples were adjusted to moisture content of 65% by saw dust and seeded with soil microbial inoculator of 10% by the weight in case of reactor B. The number of microorganisms, aerobic bacteria, actinomyces, yeasr, and fungi in soil microbial inoculator were over 2,98 x109/g, 3.93 x107/g, 1.21 x105/g, and 5.79 x 1Q7/g, respevely. During the process of composting, 야le highest temperatur were 63.40C at reactor A(unseeded control) after 10 days and 66.80C at reacror B(seeded compost) after 4 days. The pH values of reactor A and B rapidly increased after 3 days and after fìrst few days during composting period, respectively. The highest CO, concemrations were 6.1 % (after 10 days) and 10.8%(after 4 days) in reactor A and B, respeively. The degradation rates of organic matter(rd) between reactor A and B increased by 17.1 % and 64.5%, respectively. Consεquently, the effects of inoculation on compostÏng paneter such as temperature increasing, pH change, chemical properties, and the degradation rates of organic matter(rd) were higher in seeded compost than in unseeded control.

서울시 고농도 PMnullnull과 PM2.5 발생시 levoglucosan과의 상관관계

서영화(Young-Hwa Seo),정권(Jung Kweon) 한국환경관리학회 2013 環境管理學會誌 Vol.19 No.1

Levoglucosan은 농업 잔재물 소각이나 산불과 같은 바이오매스 연소 특성을 강하게 나타내는 유기화합물이다. 서울 광진구와 구로구의 미세먼지 농도가 높은 날 채취된 PM10과 PM2.5 에서 levoglucosan을 분석하여 그 인과관계를 알아보았다. 동시에 유기 탄소성 물질(OC)과 원소 탄소성물질(EC)도 측정하였다. 미세먼지 채취 기간 중인 1월에 PM10 농도가 120.5 ㎍/㎥, 그리고 PM2.5 농도가 79.2 ㎍/㎥ 까지 높게 관측되었는데 OC 농도도 PM10의 17.5%~44.5%, PM2.5의 25.7~64.6% 까지 동시에 높게 나타나서 OC의 증가가 미세먼지 농도증가에 큰 영향을 미치는 것으로 나타났다. OC/EC 비율도 PM10의 경우 5.13, PM2.5의 경우 5.54로 상당히 높아서 매우 많은 양의 OC가 유입된 것을 확인하였다. PM10농도가 평상인 날의 PM10 levoglucosan의 농도는 24 ~ 65 ng/㎥ 이었으며, PM10 농도가 높은 날 PM10 levoglucosan의 농도는 225~146 ng/㎥으로 평균 5배 이상 높았다. 그러므로 PM10 농도가 높은 원인은 levoglucosan 농도의 증가 결과로서 바이오매스 연소로 인한 스모그의 유입이 큰 원인인 것으로 확인할 수 있었다. PM2.5 농도가 평상인 날의 PM2.5 levoglucosan의 농도는 19.3 ~ 35.4ng/㎥ 이었는데 PM2.5 농도가 높은 날의 PM2.5 levoglucosan의 농도는 114 ~ 146 ng/㎥으로 4~ 5배 이상 높게 관측되어 PM2.5 농도가 높은 원인도 바이오매스 연소로 인한 스모그의 유입이 큰 원인인 것으로 확인할 수 있었다. 측정 결과로부터 levoglucosan의 농도는 미세먼지 농도가 급속하게 오르기 전 하루 전부터 높아지는 것으로 확인되었는데 바이오매스 연소 스모그가 유입되면서 미세먼지의 농도는 추후로 높아지는 것으로 예측할 수 있다. This study was carried out to figure out the relationship of levoglucosan and the high concentration of fine particulate. Levoglucosan is an organic compound found in air particulates, presenting a strong biomass burning characteristics such as combustion of agricultural residues and forest fires. It was measured from fine particulates sampled at the dates when the high concentration of PM10 and PM2.5 outbreaks occurred in January and February, 2012. When PM10 concentration was raised to 120.5 ㎍/㎥, and PM2.5 concentration was to 79.2 ㎍/㎥, OC concentration were also raised upto 44.5% of the PM10 and 64.6% of the PM2.5, indicated that increase of OC impacted on the increase of the concentration PM10 and PM2.5 High ratio of OC/EC also indicated that a large amount of OC was introduced. Levoglucosan concentrations of PM10 at the dates with high PM10 concentration were 225~146 ng/㎥ which were 5 times higher than those of the normal PM10 concentration. Levoglucosan concentrations of PM2.5 at the dates with high PM2.5 concentration were 114 ~ 146 ng/㎥ which were 4~5 times higher than those of the normal PM2.5 concentration. These results clearly showed that the cause of the high PM10 concentrations could be a levoglucosan concentration increased as a result of the influx of smog caused by the burning of biomass. And the measurement results were also confirmed that the concentration of levoglucosan was increased from the day before when the fine particulate concentration is rapidly increased. It can be predicted that the biomass burning smog influxes earlier and the higher concentration of fine dust occurs later.

서울시 터널의 유해대기오염물질 농도변화 특성 분석

박진아,이원영,김진아,김익수,김현수,정종흡,윤중섭,정권,엄석원,Park, Jin-A,Lee, Won-Young,Kim, Jin-A,Kim, Ik-Su,Kim, Hyun-Su,Jeong, Jong-Heup,Yun, Jung-Seop,Jung, Kweon,Eom, Seog-Won 한국환경보건학회 2013 한국환경보건학회지 Vol.39 No.6

Objectives: We analyzed the characteristics of hazardous air pollutants (HAPs) in road tunnels in Seoul. Methods: Particle matter ($PM_{10}$), elemental carbon (EC), organic carbon (OC), and 16 species of polycyclic aromatic hydrocarbons (PAHs) in two road tunnels (NS tunnel and HJ tunnel) were sampled and analyzed from 2007 to 2011. Results: Levels of $PM_{10}$ and carbon ingredients which were mainly emitted from diesel-fueled vehicles showed a declining tendency in both road tunnels. PAHs levels in HJ were declining slightly while PAHs levels in the NS tunnel fluctuated considerably and showed an increasing tendency. Conclusions: These results suggested that the abatement project of diesel vehicle emissions by the Seoul metropolitan government from 2007 has had an impact on the reduction of DVE into the air, though there exist many things to consider for analyses.

서울시의 2005~2006년 도시배경 및 상층측정망의 대기질 특성 분석

유승성 ( Seung Sung Yoo ),전재식 ( Jae Sik Jeon ),정권 ( Kweon Jung ),신은상 ( Eun Sang Shin ),정부전 ( Bu Jeon Jung ),류리나 ( Ri Na Ryu ),우정헌 ( Jung Hun Woo ),선우영 ( Woo Young Sun ) 한국환경영향평가학회 2011 환경영향평가 Vol.20 No.1

The results of comparing PM10 concentration between ``Namsan`` and ``Yongsan-gu`` air quality monitoring stations show similar values with averaged concentration in the whole Seoul. The correlation factors in both sites were 0.865, 0.828 in 2005, 2006, respectively. For ``Bukhansan`` and ``Gangbuk-gu`` air quality monitoring stations, different from the results mentioned above, they showed clear differences as altitude changes. PM10 concentration in ``Bukhansan`` monitoring stations was 10 μg/m3 lower than ``Gangbuk-gu`` monitoring station which is located near the ground. Also, averaged PM10 concentration in ``Bukhansan`` and ``Gangbuk-gu`` monitoring stations was lower than that in the whole Seoul. When comparing NO2 concentration between ``Namsan`` and ``Yongsan-gu`` monitoring stations, NO2 concentration in ``Namsan`` monitoring station was lower than ``Yongsan-gu`` monitoring station. For NO2 concentration in ``Bukhansan``, ``Gangbuk-gu`` and ``the whole Seoul``, there were the same pattern in ``Gangbuk-gu`` and the ``the whole Seoul`` and low values in ``Bukhansan`` monitoring station. The correlation factors of NO2 concentration in ``Bukhansan`` and ``Gangbukgu`` was 0.525, 0.549 in 2005, 2006, respectively, which stands for low correlationship.

서울시 대기 중 PM<SUB>2.5</SUB> 농도 개선과 조기사망 감소 효과

배현주(Hyun Joo Bae),신지영(JI Young Shin),박찬구(Chan Koo Park),정권(Kweon Jung),이상열(Sang Yol Lee),김민영(Min-Young Kim),박정임(Jeongim Park) 한국대기환경학회 2010 한국대기환경학회지 Vol.26 No.1