경북지역 폐금속광산이 환경에 미치는 영향

이재영,김종근,이인호,이진국,Lee, Jae Yeong,Kim, Jong Gun,Lee, In Ho,Lee, Jin Kook 대한자원환경지질학회 1993 자원환경지질 Vol.26 No.4

The heavy metal contents are more abundant in stream waters, paddy soils and rice plants in the vicinity of abandoned mines compared to the surrounding areas in the Kyungpook province. However, these contents tend to decrease with distance from mines, and show some variation under different geological and geochemical environments. The Sin-stream waters have high contents of Cu=4.9 ppm, Pb=0.1 ppm, Zn=3.5 ppm and other heavy metals (Ni, Co, Cd) at Dalsung abandoned mine and low contents of Cu=0.4 ppm, Pb=0.1 ppm, Zn=0.1 ppm and other metals= 0.002 ppm in the surrounding area. The high contents decrease in the downstream in the area of calcareous sedimentary rocks. The paddy soils have high contents of approximately Cu=51 ppm, Pb=83 ppm, Zn=211 ppm, and Cd=11.3 ppm in the vicinity of Gunwi abandoned mine but low contents of Cu=4.5 ppm, Pb=2.9 ppm, Zn=60 ppm and Cd=0.4 ppm in the surrounding area. The Dadeog abandoned mine also shows similar trends to Gunwi mine. The contents of heavy metals of rice plants are high in the roots but trends to decrease through stem+leaf and become low in brown rices.

금속폐광산주변의 토양, 식물 및 하천의 중금속오염에 대한 지화학적 연구 -달성 및 경산광산-

이재영,이인호,이순영,Lee, Jae Yeong,Lee, In Ho,Lee, Sun Yeong 대한자원환경지질학회 1996 자원환경지질 Vol.29 No.5

The tonnage of copper and tungsten produced at Dalseong mine by Taehan Tungsten Mining Company from 1961 to 1971 was 48,704 tons (M/T) of 4 wt.% Cu and 1,620 tons (S/T) of 70wt.% WO, but the mine was closed in 1974. Kyeongsan mine is a small abandoned cobalt mine with no data of production. To investigate the pollution level of the mine areas, soils, plants (Ohwi and Pampanini), stream waters and stream sediments were taken and Fe, Mn, Cu, Pb, Zn, Ni, Co, Cd and Cr were analysed by ICP. Soils are considerably contaminated by the heavy metals related to ore deposits, The heavy metal contents in plants vary with the species and parts of plants. Stream waters are anomalously high in heavy metals in the vicinity of the mines but the contents decrease downstream in the process of dilution and precipiation. However, heavy metal contents increase very high in stream sediments due to precipiation. To protect environmental damages caused by acid mine drainages wetlands must be constructed outside pits, and it is necessary to fill pits with waters, limestone chips and organic materials, which give reducing and alkaline condition to ores. Under the condition pyrite is protected from oxidation and aqueous iron sulphates precipitate to form stable secondary pyrite.

천연 벤토나이트로부터 합성된 제올라이트 A의 특성

이재영,조승래,이홍기,심미자,이주성,김상욱,Lee, Jae-Yeong,Jo, Seung-Rae,Lee, Hong-Gi,Sim, Mi-Ja,Lee, Ju-Seong,Kim, Sang-Uk 한국재료학회 1995 한국재료학회지 Vol.5 No.8

경북 감포지역에서 산출되는 천연 벤토나이트를 이용하여 제올라이트를 합성하였으며 세제용 builder로서 가능성을 연구하였다. 최적의 합성조건은 기질의 몰비가 SiO$_2$/Al$_2$O$_3$=2, $Na_2$O$_3$/Al$_2$O$_3$=1, $H_2O$/A1$_2$O$_3$=30이고 9$0^{\circ}C$에서 3시간 반응시킬 경우였고, 이 조건에서는 A형 제올라이트가 합성되는 것을 XRD를 통하여 확인하였다. 최적 조건에서 합성된 제올라이트의 이온교환능을 측정하기 위하여 경도 40$^{\circ}$Dh의 CaCl$_2$용액과 3$0^{\circ}C$에서 IS분 접촉시킨 결과 264.9mg CaO/g-zeolite 정도로 우수한 값을 나타내었다. 이 시료의 백색도는 89%이었고, 평균 입자크기는 9.95$\mu\textrm{m}$이었다. Synthetic zeolite was prepared by using of natural bentonite from Kampo area and the application of detergent builder was investigated. The optimum synthetic condition was SiO$_2$/Al$_2$O$_3$= 2, Na$_2$O/A1$_2$O$_3$=1, H$_2$O/A1$_2$O$_3$=30 at 90$^{\circ}C$ for 3hr and it was found by XRD analysis that the zeolite synthesized under this condition was type A. When the zeolite A synthesized under the optimum condition was contacted with 40$^{\circ}$Dh CaCl$_2$solution at 30$^{\circ}C$ for 15min, the cation exchange capacity was 264.9mg CaO/g-zeolite. And the whiteness of the sample was 89% and the mean particle size was 9.95$\mu\textrm{m}$.

경상분지내 동광상 관련 진동화강암류에 대한 지화학적 연구

이재영,이진국,박법정,이인호,김상욱,Lee, Jae Yeong,Lee, Jin Kook,Park, Beob Jeong,Lee, In Ho,Kim, Sang Wook 대한자원환경지질학회 1994 자원환경지질 Vol.27 No.2

Jindong Granites are plotted mainly in the region of granodiorite~diorite of the Streckeisen's diagram, while Yucheon-Eonyang Granites and Onjonri Granites in the region of monzo-granite and monzo-granite~granodiorite, respectively. Jindong Granites show a differenciation trend of calc-alkaline magma, and its magmatic evolution from intermediate to acidic rocks, which might form mineralizing solution, is consistant with the general path of the Cretaceous granitic rocks including Yucheon-Eonyang Granites and Onjongri Granites. The differenciation index (D.I.) is 35~80 for Jindong Granites, which is lower than 85~95 of Yucheon-Eonyang Granites and is partly overlapped by 67~84 of Onjongri Granites. There is clear difference in content of some major and trace elements between Jindong Granites of Cu province and the other granitic rocks of Pb-Zn and Mo provinces. Between these metallogenic provicnes, Cu content is high in Jindong Granites near Haman-Gunbuk mineralized zone, while Pb and Zn are relatively abundant in Yucheon-Eonyang Granites and Mo in Onjongri Granites. Therefore, Jindong Granites of the Cu province are distinguishable by chemical compositions and their related geochemical characteristics from the other Cretaceous granitic rocks of Pb-Zn and Mo provinces. However, the content of Cu and Cl in biotite is applicable to distinguish a productive phase from a barren phase of Jindong Granites, because Cu and Cl show a trend to be concentrated in biotite of Jindong Gratites in the Haman-Gunbuk mineralized zone.

경상분지내 열수광상의 광화작용과 백악기 화강암류의 화학성분 변화와의 관계

이재영,이진국,이인호,김상욱,Lee, Jae Yeong,Lee, Jin Kook,Lee, In Ho,Kim, Sang Wook 대한자원환경지질학회 1994 자원환경지질 Vol.27 No.4

The Cretaceous granitic rocks show differences in rock types and chemical compositions according to metallogenic provinces of copper, lead zinc and molybdenum in the Gyeongsang basin. Jindong granites are of granodiorite~quartz diorite~diorite in Cu-province; Makeunsan/Yucheon-Eonyang granites, granodiorite~granite in Pb Zn-province; Onjeongri-Yeonghae granites, granodiorite~quartz diorite in Mo-province, and there is a trend that productive masses are less differenciated than barren masses in Cu and Pb-Zn provinces whereas productive masses are more differenciated than barren masses in Mo province. Metallogenic provinces are distinguishable by variations of major and trace elements. The Cretaceous granitic rocks are highest in the content of Ca, Mg and other basic major elements and lowest in the content of K and Na in Cu provicne; the variation trends are vice versa in Pb-Zn province. Trace elements such as Rb and Sr show variations related to K and Ca, and metallogenic provinces are also distinguishable by their ratios. The granitic rocks of Mo province have intermediate content of major and trace elements, but are clearly distinguishable from Jindong granites and partly overlapped by Yucheon-Eonyang granites. Chlorine content in biotites is higher in a productive mass than in a barren mass in Cu province. Therefore, the mineralogical and chemical compositions are applicable as geochemical index to distinguish the types of mineralizaion, and productive and barren masses of the Cretaceous granitic rocks in the Gyeongsang basin.

Kissinger Equation 과 Fractional Life 법에 의한 DGEBA / MDA / MN 계와 DGEBA / MDA / MN / HQ 계의 경화반응 속도론

이재영,심미자,김상욱 ( Jae Young Lee,Mi Ja Shim,Sang Wook Kim ) 한국공업화학회 1994 공업화학 Vol.5 No.4

DGEBA/MDA/MN계와 이 계에 촉매로서 hydroquinone(HQ)를 첨가한 계의 경화반응 속도론을 Fractional life법 및 Kissinger equation에 의해 연구함으로써 HQ가 경화반응 속도에 미치는 영향을 연구하였다. 경화반응 온도가 증가함에 따라 반응속도는 증가하였고, 반응차수는 약간의 변화가 있을 뿐 경화온도에 따른 경향성은 없었다. 촉매로 HQ를 첨가한 계가 첨가하지 않은 계보다 반응속도는 크게 증가하였고, 활성화 에너지는 13% 감소하였다. 이는 HQ의 히드록 시기가 에폭사이드기, 아민기와 반응하여 전이상태를 형성함으로써 에폭사이드 고리를 쉽고 빠르게 개환시켜 주기 때문이다. Cure kinetics of DGEBA/MDA/MN system with and without HQ were studied by Fractional life method and Kissinger equation. And the effect of HQ as a catalyst was studied As cure temperature increased, the reaction rate increased and reaction order was almost constant. The activation energy of the system with HQ was lower about 13% and the reaction rate was higher than that of the system without HQ. It was because hydroxyl group of HQ formed a transition state with epoxide group and amine group and opened the epoxide ring easily and rapidly.

DGEBA - MDA - SN - Hydroxyl Group System 의 합성 및 복합재료 제조 : 2 . 섬유강화 복합재료의 파괴에너지

이재영,심미자,김상욱 ( Jae Young Lee,Mi Ja Shim,Sang Wook Kim ) 한국공업화학회 1994 공업화학 Vol.5 No.4

유리섬유/탄소섬유/에폭시 수지 hybrid 복합재료의 파괴에너지를 파괴메카니즘 측면에서 연구하였다. 에폭시 수지 매트릭스는 DGEBA(diglycidyl ether of bisphenol A)-MDA(4,4`-methylene dianiline)-SN(succinonitrile)-HQ(hydroquinone)를 사용하였다. 섬유강화 복합재료의 파괴에너지를 연구한 결과, 유리섬유와 매트릭스의 계면에서는 post debond friction energy가 가장 크게 나타났으며, debonding energy와 pull-out energy는 비슷한 값을 나타내었다. 탄소섬유와 매트릭스의 계면에서 파괴가 일어나는 경우에는 pull-out energy가 가장 큰 영향을 나타내었다. The fracture energy of glass fiber/carbon fiber/epoxy resin hybrid composite system was investigated in the aspect of fracture mechanism. Epoxy resin matrix was DGEBA-MDA-SN-HQ system. On the interface of glass fiber and matrix, post debond friction energy provided a major contribution to the fracture energy, and debonding energy and pull-out energy were of the similar value. In the case of fracture on the interface of carbon fiber and matrix, pull-out energy was the major contributor.

유천분지내 화강암류와 광상구의 관계에 대한 지화학적 연구

이재영,김상욱,김영기,고인석,장태우,Lee, Jae Yeong,Kim, Sang Wook,Kim, Young Ki,Koh, In Seok,Chang, Tae Woo 대한자원환경지질학회 1990 자원환경지질 Vol.23 No.2

There is clear difference in content of the major and trace elements between Masan granites of Cu province and Yucheon-Eonyang granites of Pb-Zn province in the Yucheon Basin: the former has low content in K(2.08%), Na(2.42%) and Rb (127ppm), and high content in Ca(3.75%), Mg(1.42%) and Sr(304ppm) whereas the latter has high content in K(3.56-3.60%), Na(3.05-3.06%) and Rb(144-161ppm), and low content in Ca(0.62-0.96), Mg(0.21-0.26%) and Sr(136-157ppm). Ore metals in granites also show slight difference between two areas: Masan granites have slightly higher Cu content(18ppm) than Yucheon-Eonyang granites(13, 14ppm), whereas Yucheon granite(29ppm) has slightly higher Pb content than Masan granites(25ppm). Thus, it may be possible to apply geochemical difference of the granites to distinguish whether a Cretaceous granite mass is related to copper or lead-zinc mineralization, and whether it belongs Cu-province or Pb-Zn province in the Yucheon Basin.

Electrodeposition of a Single Phase Cu2O Film by Current Pulsed Methods

이재영,남종우,탁용석,엄성현,강진욱 ( Jae Young Lee,Sung Hyun Um,Jin Wook Kang,Chong Woo Nam,Yong Sug Tak ) 한국공업화학회 1997 한국공업화학회 연구논문 초록집 Vol.1990 No.3

동일본 대지진 당시 일본의 비상 발령 및 주민대피에 관한 실태 조사와 시사점 도출: 문헌조사연구

이재영,김윤희,엄영호,Lee, Jaeyoung,Kim, Younhee,Eom, Young ho 한국재난정보학회 2021 한국재난정보학회 논문집 Vol.17 No.3

연구목적: 후쿠시마 원자력 발전소 폭발사고 발생 당시의 재난상황, 주민보호를 위한 비상발령 상황, 주민 피난 상황에 대한 조사와 더불어 당시 주민보호 시스템에 있어서 제기된 문제점 및 조치사항에 대한 조사를 수행함으로서, 국내 원자력 재해를 대비한 주민 피난 대책 수립 과정에서 검토해야만 하는 시사점을 도출하고자 한다. 연구방법: 동일본 대지진 직후부터 현재까지 일본의 국가, 국회, 지자체 및 관련기관으로부터 발행된 보고서를 중심으로 문헌조사를 수행하였다. 연구결과: 후쿠시마 원자력발전소 폭발사고 발생 당시의 주민의 피난과정에서 도출된 문제점과 대응방안에 대한 조사 결과를 통하여 국내의 방사능 재해 대책 수립과정에 있어서 검토해야만 하는 사항을 도출하였다. 결론: 검토 사항을 크게 4가지로 분류하였으며 각 분류에 따른 상세 검토사항을 제시하였다. Purpose: This study seeks to draw out implications that must be considered in the process of establishing measures to evacuate residents in preparation for domestic nuclear disasters by conducting an investigation about the disaster situation at the time of the Fukushima nuclear power plant explosion, emergency warning situation for residents protection, evacuation situation and In addition to investigating problems and measures raised in the resident protection system at that time. Method: A literature survey was conducted focusing on reports published by Japan's national, parliament, local governments and related agencies from right after the Great East Japan Earthquake to the present. Result: Found out what needs to be considered in the process of establishing domestic radiation disaster measures through the results of the survey on the problems and countermeasures derived from the process of evacuation of residents at the time of the Fukushima nuclear power plant explosion. Conclusion: The reviews were classified into four categories and detailed reviews were presented.