간행물
大田大學校 環境問題硏究所 論文集 대전대학교 환경문제연구소 논문집 Journal of The Institute of Environmental Studies
- 발행기관 대전대학교 환경문제연구소
- 자료유형 학술지
- 간기 연간
- ISSN 2287-1527 (Print)
- 수록기간 1996 ~ 2016
- 주제분류 공학 > 환경공학 공학 분류의 다른 간행물
- 십진분류KDC 539DDC 628
권호리스트/논문검색
제15호 (2011년 2월) 6건
환경자료
1.
2011.02
구독 인증기관 무료, 개인회원 유료
4,000원
2.
2011.02
구독 인증기관 무료, 개인회원 유료
5,700원
3.
2011.02
구독 인증기관 무료, 개인회원 유료
Toluene, xylene, styrene, and ethylbenzene are main volatile organic compounds emitted from painting materials. According with the development of gas chromatography equipment, it has been possible to analyze the low level of ambient VOCs concentration. In this study, the limit of detection and the limit of quantitation were analysed for VOCs originated from painting materials in GC/FID/liquid injection analysis system. The results of %RSD for four standard solutes showed a great reproducibility in terms of detection time and detection area. The limit of detection and the limit of quantitation in SRI GC appeared to be 501.64 pg and 1.67 ppb for toluene, 572.03 pg and 1.90 ppb for ethylbenzene, 1077.22 pg and 3.59 ppb for m,p-xylene, 36563.35 pg and 121.76 ppb for styrene, respectively.
4,000원
4.
2011.02
구독 인증기관 무료, 개인회원 유료
We have accomplished a various reaction experiment for a purifying agent selection which is related with efficient site demobilization about soil contaminated with the total petroleum hydrocarbon(TPH) in link of contaminated soil purification enterprise of power train center in Y railway car places of business for an oxidizer comparison experiment, we have differed consistency and implantation quantity of the hydrogen peroxide (H2O2). The result showed the highest 98.8% removal ratio, when H2O2 is 35% consistency. In the same way, the result which implants at 1:1 ratio (hydrogen peroxide (H2O2) : the catalyst (FeSO4 ․7H2O)) showed a similar result, when only the hydrogen peroxide was implanted.
4,000원
5.
2011.02
구독 인증기관 무료, 개인회원 유료
The commission assessment and cost analysis of a measuring rate system of food waste were performed to account a total budget. The selling price of tax clearance was between about 240 wons and 270 wons, a vinyl bag was sold at from about 260 wons to 290 wons, based on a vessel size of 5L. After one year the measured rate system was enforced, the total cost for buying vessels in the Daejeon metropolitan city area was accounted about 720 million wons. Purchasing cost of bar code tax clearance and vinyl bags were decreased to 215 million wons due to the reduction rate, while the selling cost was increased to 328 million wons, compared with the existing cost. Therefore, the total saving cost was 2,639 million wons per year in the city.
5,500원
6.
2011.02
구독 인증기관 무료, 개인회원 유료
We performed water analysis at the water quality measuring points of Gap Stream and Youdenug Stream to examine the water quality impact by the Youdeung Stream inflow to Gap Stream Lake Park due to moving of movable weir. As analytical results, the SS concentration was found to be high during a rainy season, but during a dry season COD and TP concentrations were found to be high. Especially, the TP was higher after the moving of movable weir. From the measuring results of sediments of Gap Stream Lake Park, the concentration of organic matter due to the decrease of flow rate of water was higher than a non-freshwater period, and the downstream concentration of organic matter was found to be higher than the upstream of Lake Park during a fresh water period. The analytical results of water quality for the inflow of Yudeung Stream for maintaining utility water of Daejeon Stream showed no concentration difference according to the points in organic matters and nutrient salts, but the COD and SS concentrations were found to be partially high in the Okgye Bridge outfall. In case of heavy metals they were not mostly detected, so their effects were not high.
5,100원
