토지이용실태에 따른 하남산업단지 토양오염물질 분포 특성에 관한 연구

공화진,위환,김승호,박옥현,장길식,정희윤,배석진,정숙경,조영관,Kong, Hwa-jin,Wi, Whan,Kim, Seung-ho,Park, Ok-hyun,Jang, Gil-sik,Jung, Hee-yun,Bae, Seok-jin,Jeong, Suk-kyung,Cho, Young-gwan 한국지하수토양환경학회 2018 지하수토양환경 Vol.23 No.2

Soil contamination survey was conducted during March - July, 2017 to obtain soil contamination profile of 16 organic and inorganic contaminants in Hanam industrial complex located in Gwangju, Korea. The concentrations of all surveyed contaminants except Cd showed were within 0.3~1.5 times of their natural background levels. Cd showed concentrations as high as 6.9 times of the background level, signifying the influence of the metal processing facilities in the complex. The concentrations of Zn, Pb and Hg in areas nearby industrial facilities were 1.3~5.5 times higher than those within the facility and green area. The concentration of Cu in the green area was 1.4~2.9 times higher than in other areas. The Soil Pollution Index (SPI) analysis revealed 54% of the total area belong to first-grade soil, 43% to second-grade, and 3% to third-grade. The Enrichment Factor (EF) of Zn, Pb, and Cd were 9.2, 15.6, and 88.5, respectively, indicating high accumulation and contamination of the soil with Cd.

단보 : 가정용 정수기 정수효과 실태조사

김난희 ( Nan Hee Kim ),위환 ( Whan Wi ),조광운 ( Gwang Woon Jo ),이윤국 ( Youn Goog Lee ),윤상훈 ( Sang Hoon Yoon ),강영주 ( Yeong Ju Kang ),김은선 ( Eun Sun Kim ),서광엽 ( Gwang Yeob Seo ) 한국환경분석학회 2013 환경분석과 독성보건 Vol.16 No.2

The analysis of raw water and purified water from 105 social welfare organizations in Gwangju was performed to find out the purification effect of water purifiers in use. In the study, 105 purified water samples and corresponding raw water samples (95 from tap water, 10 from groundwater) were analyzed. Forty six inspection items of drinking water standard and main minerals (Ca2+, Mg2+, K+, Na+) were analyzed for groundwater and 28 items such as heavy metals, microorganisms, disinfection by-products, aesthetic materials were analyzed for tap water. When the concentration of each item in purified water showed lower than that of raw water, we expressed the results as the positive(+) effect and vice verse, negative(-) effect. The results of the purification effect of water purifier using tap water and groundwater were presented (+) effect 39.6% and (-) effect 28.0%, (+) effect 39.1% and (-) effect 30.1%, respectively.

물놀이형 수경시설의 수질과 항생제 내성 대장균 분포에 관한 연구

윤상훈,김선경,김난희,위환,이세행,조광운,김동수,조영관,Yoon, Sang-Hoon,Kim, Seon-Gyeong,Kim, Nan-Hee,Wi, Whan,Lee, Se-Hang,Jo, Gwang-Woon,Kim, Dong-Su,Cho, Young-Gwan 한국환경보건학회 2014 한국환경보건학회지 Vol.40 No.3

Objective: This study was performed in order to investigate the distribution of antibiotic resistant E. coli and water quality in waterscape facilities. Methods: Nine waterscape facilities were selected and classified into three types: ground, wall and general fountain. The items analyzed in this study were pH, turbidity, $KMnO_4$ consumption, total colony, total coliforms, fecal coliforms and E. coli. Additionally, an antibiotic resistance test on E. coli was performed. Results: There were no sampling sites that exceeded the permitted limits of water quality, but the concentration of pollutants was high at the beginning operation in June. Moreover, concentration of turbidity, $KMnO_4$ consumption and total colony were higher in ground fountains than in wall and general fountains. Five species of antibiotic resistant E. coli were detected from three sampling sites. Conclusions: The waterscape facilities were significantly contaminated with water microorganisms, especially total colony, total coliforms and fecal coliforms. Disinfection and filtration systems to remove pollutants should be installed for safe waterscape facilities.

광주지역 빗물이용시설의 수질특성에 관한 연구

안상수 ( Sang-su An ),위환 ( Whan Wi ),윤상훈 ( Sang-hoon Yoon ),장서은 ( Seo-eun Jang ),정숙경 ( Suk-kyoung Jeong ),조영관 ( Young-gwan Cho ),김은선 ( Eun-sun Kim ) 한국환경분석학회 2016 환경분석과 독성보건 Vol.19 No.2

To investigate the characteristics of rainwater quality as pH, color, turbidity, EC (electronic conductivity) and heavy metals in Gwangju area, 43 samples were collected at initial rainfall amounts over 3 mm/day during March to October in 2015. For 32 samples over 5 mm/day rainfall amount, pH was 4.8~6.5, and turbidity, color and NH3-N were 0.77~97.88 NTU, 4~16 degree, 0.6~12.0 mg/L, respectively, which are exceeding the drinking water standard. Heavy metals (except for Fe, Zn and Cu), volatile organic compounds and pesticides were not detected. Concentrations of color and turbidity in rainwater were decreased contrarily to the lapsed time at the storage, whereas the concentration of Zn was not so much changed compare to the initial state. Particulate matter (PM10) in air has the negative correlation with pH and positive correlations with turbidity, color and EC in rainwater. Seasonal variation showed that pH, DO, turbidity, color and EC in spring was lower than in summer with the influence of rainfall frequency and amount. Rainwater quality of pH, color and turbidity was lowered depending on the lapsed time for 10 days. pH was a little higher at concrete storage tank than at FRP storage tank because alkaline compound as CaCO3 flow out of the concrete surface, whereas turbidity was a little higher at FRP storage tank than at concrete storage tank.

광주천 저서성 대형무척추동물 분포특성을 이용한 수생태 건강성 평가

윤상훈 ( Sang Hoon Yoon ),정숙경 ( Suk Kyeong Jeong ),위환 ( Whan Wi ),안상수 ( Sang Su An ),장서은 ( Seo Eun Jang ),조영관 ( Young Gwan Cho ) 한국환경생태학회 2015 한국환경생태학회 학술대회지 Vol.2015 No.2

광주천은 무등산에서 발원하여 광주광역시를 통과한 후 영산강과 만나는 길이 약 20km의 지방하천이다. 생태하천 복원사업 등을 통해 부족한 수량을 확보하기 위해 하천유지용수 명목으로 주암호 호소수, 영산강 하천수, 그리고 하수처리장 방류수 재처리수 등이 다량 방류되고 있다. 그러나이에 대한 생태학적 영향 조사는 거의 이루어지지 않았다. 환경부 주관의 전국자연환경조사나 수생태계 건강성 평가에 따른 대규모 생태조사시 광주천은 2~3지점 포함되어 조사되고 있으며, 과거 광주천의 저서성 대형무척추동물에 대한 분포조사는 거의 전무한 실정이다. 더욱이 세계적인 물관리 패러다임이 생물·생태학적으로 변화함에 따라 광주천에 대한 수생태계 건강성 평가 연구를 시작하게 되었고그 일환으로 저서성 대형무척추동물 분포조사를 실시하였다. 본 조사는 2014년 10월부터 2015년 4월까지 총 3회에걸쳐 현장조사 및 저서성 대형무척추동물 분포조사를 수행하였다. 1차 조사는 2014년 10월 30일, 2차 조사는 2015년2월 4일, 3차 조사는 2015년 4월 22일 실시하였고 조사대상지점은 교란지점을 중심으로 상류부터 5개 지점을 선정하였다. 지점 1~3은 상류지역으로 하수처리장 방류수 재처리수 방류구 , 주암호 호소수 방류구, 영산강 하천수 방류구가 설치되어 있다. 지점 4는 중류지역으로 다른 하천이 유입되는 지점이다. 지점 5는 하류지점으로 영산강과 합류되는 지점이다. 대조군으로는 광주천이 발원하는 무등산 제2수원지 상류 계곡 한 지점을 선정하여 조사하였다. 조사결과 총 4문 7강 16목 31과 50종이 확인되었다. 곤충류가 39종 (88.1%), 비곤충류가 11종 (11.9%)으로 나타났다. 곤충류는 하루살이목(Ephemeroptera)이 48.1%, 날도래목(Tricoptera)이 28.3%를 차지하였고 파리목(Dipteria), 딱정벌레목(Coleoptera) 순이었다. 평균 개체수는 지점 1에서 586개체, 지점 2에서 348개체, 지점 3은 187개체, 지점 4는 184개체, 지점 5에서는 58개체였다. 분류된 종과 개체수에대한 군집분석 결과, 각 지점별 우점종은 지점 1과 2에서는 부채하루살이(Epeorus pellusidus Brodsky), 지점 3에서는 꼬마줄날도래(Cheumatopsyche brevilineata Iwata), 지점 4와 5에서는 개똥하루살이(Baetis fuscatus Linnaeus)로 나타났다. 우점도지수(DI)는 평균 0.62로 5개 지점에서 모두비슷한 결과를 나타내었다. 종다양도지수(H``)는 평균 2.18로 4, 5지점에서 다소 낮게 분석되었다. 종풍부도지수(RI)는 평균 2.33으로 지점 1에서 평균 3.35, 지점 5에서 1.14로 상류에서 하류로 내려갈수록 낮아지는 경향을 보였다. 균등도지수(J``)는 평균 0.62를 나타내었고 상류에서 하류로 갈수록 낮아지기는 하나 그 차가 크지 않았다. 하천 수질상태를 직접적으로 판단할 수는 없지만 간접적으로 유추해 볼 수있는 비내성 범주 지수(EPT)를 조사한 결과 지점 1에서 86.0%, 지점 2는 85.4%, 지점 3은 61.5%, 지점 4는 54.0%그리고 지점 5에서 46.9%를 나타내었다. 본 조사는 광주천에 대한 향후 지속적인 수생태 건강성 평가연구의 일환으로 지방하천에 대한 체계적인 생물조사를 바탕으로 생태학적 관점에서 하천에 대한 수질관리를목표로 하고 있다. 또한 기후변화와 저서성 대형무척추동물의 분포와의 관계를 파악할 수 있을 것이다. 특히 유하거리가 짧고 도시의 불투수층의 증가로 인해 하천 수량이 줄어들며 다양한 인위적인 교란요인이 상존하는 광주천에서는 이화학적 수질조사는 그 한계가 있어 저서성 대형무척추동물을 포함한 다양한 수서생물 이용한 생태학적 수질조사가 필요할 것으로 생각된다.

소독방법에 따른 실내수영장 수질 특성 -브롬산염, 클로레이트, 염소이온을 중심으로-

조광운 ( Gwang Un Jo ),이세행 ( Se Haeng Lee ),위환 ( Whan Wi ),윤상훈 ( Sang Hoon Yoon ),김난희 ( Nan Hee Kim ),안상수 ( Sang Soo An ),정숙경 ( Suk Kyeong Jung ),김동수 ( Dong Su Kim ),조영관 ( Young Gwan Cho ) 한국환경분석학회 2015 환경분석과 독성보건 Vol.18 No.2

This study was carried out to investigate the characteristics of water quality parameters in the indoor swimming pool water according to the type of disinfection. The method of disinfection has a on-site oxidant generation, sodium hypochlorite and artificial seawater electrolysis that the salt was put in the pool directly. The on-site oxidant generation and sodium hypochlorite in the disinfectant contain high concentrations of bromate and chlorate. The bromate and chlorate containing the disinfectant is the cause of detection in a swimming pool. Maximum concentration of bromate in swimming pool waters was 1.365 mg/L at on-site oxidant generation and maximum concentration of chlorate was 36.00 mg/L at sodium hypochlorite. Therefore, to reduce the concentration of bromate and chlorate in swimming pool water, it is necessary to use the disinfectant containing the less quantity of bromate and chlorate and to exchange of swimming pool water frequently.

단보 : 광주광역시 비지정약수터 수질특성

이윤국 ( Youn Goog Lee ),윤상훈 ( Sang Hoon Yoon ),조광운 ( Gwang Woon Jo ),위환 ( Whan Wi ),김난희 ( Nan Hee Kim ),강영주 ( Yeong Ju Kang ),김은선 ( Eun Sun Kim ),서광엽 ( Gwang Yeob Seo ) 한국환경분석학회 2013 환경분석과 독성보건 Vol.16 No.2

This study was performed to investigate the water quality of non-designated spring in Gwangju. Samples were collected at 9 sites from April 2012 to March 2013. The average concentrations of physicochemical items at each sites satisfied with drinking water guideline except microorganisms. The concentrations of main minerals including Ca2+, Mg2+, K+ and Na+ showed generally similar and higher than those of bottled minerals water in some sites. Total coliforms and fecal coliforms were detected in some sample collected except S1 and S4 site. The microorganisms isolated in the natural mineral water found out E. coli (62%), Raoultella planticola (10%), Citrobacter freundii (9%) and so on. Detection of these microorganisms showed that the environment around the spring had been exposed to fecal contamination. For the efficient control, the government office needs to designate the S1 and S4 site found out the acceptance for drinking water standard as the management spring water.