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RISS 인기검색어
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- 저자 : 정숙경 ( Suk Kyeong Jung ) (검색결과 4 건)
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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.
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최형일,강영주,채희정,김연풍,조도호,설동화,정숙경 조선대학교 환경공해연구소 2007 環境公害硏究 Vol.20 No.1
After the vehicle has become a large formation with high-speed, loud noise from an express highway is increasing, and the number of large-scale apartment complexes, which are recently being constructed in the metropolitan area nearby the express highway and IC, is increasing gradually. Compared with a main road, the traffic volume and the speed of a vehicle between IC and the ramp way [turn-off] are smaller. If the ramp way is rightly connected with the downtown area, however, the traffic-noise that comes about in surrounding areas will be in conjunction with the traffic-noise from the main road of express highway and that of the ramp way. This research has selected a place that hasn't had a road or a commercial quarter nearby the main-road of IC and ramp way. Then we have studied the traffic-noise status under minimizing influence of its outer-noise, which occurs in IC. 1. The traffic volume change of a small and full-sized car with time has been kept on regularity in 2004 and 2005. As the traffic volume of a full-sized car has diminished remarkably, it has been maintaining through 6:00a.m.-10:00 a.m. As it has decreased since lO:OO a.m.. we have also observed the traffic proportion going up. 2. Monthly traffic volume of small cars was higher in May, August and October than other months. We have observed that the high traffic volume during these months is due to the following: May-The Damyang festival, August-a high-demand season, October-viewing scarlet maple leaves. Monthly traffic volume of full-sized cars was generally higher in August, but it has decreased during 2006. This was due to the many construction trucks that were working on the extension of the 88 Olympic expressway. Therefore, there was more traffic volume in 2006 compared to 2004 and 2005. 3. In this study, the noise figures have been less than 55 dB(A) in 18 spots. There were 14 spots from 55dB(A) to 58dB(A). 58-61dB(A) : 20, 61-64dB(A) : 17, 64-67dB(A) : 18. There were 8 spots we observed at the highest level from 67dB(A) to 70dB(A). Those were the nearby spots separating the main road and Damyang IC. 4. Traffic-noise at the boundary between IC and the main road of an expressway was higher than that of the same distance in other places. 5. We have observed that traffic-noise is low in places with mountains that serve the role of soundproofing walls. Thus, the fundamental sound hadn't affected it.
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최형일,채희정,김연풍,조도호,설동화,정숙경,김정애 조선대학교 생산기술연구소 2007 生産技術硏究 Vol.29 No.1
This study has been conducted to achieve the following objectives: First, in order to understand the horizontal propagation and attenuation characteristics for the road traffic noise, we selected actively developed areas within 100 meters away from the road to measure the level of traffic noise near a road. To measure the noise near a railroad, we selected areas within 100 meters away from the road. In this way, we analyzed the horizontal propagation and attenuation characteristics for the traffic noise occurring in diversified areas. Second, in order to understand the vertical propagation and attenuation characteristics for the road traffic noise, we measured and analyzed the distributional characteristics of vertical sound pressure levels on each floor of multi-storied apartment buildings according to changes of traffic load and types, and the existence or nonexistence of soundproof walls. For the case of the road traffic noise, we also selected we measured and analyzed the different noise levels on each floor of multi-storied apartment buildings from the soundproof wall. The results of Horizontal propagation and attenuation characteristics for the road traffic noise are as follows: In cases of the soundproof wall + raising ground, raising ground, cutting land, and flat land as distance increases, the sound pressure level steadily decreases. The soundproof wall + raising ground has an especially high distance decrease compared to the other areas, and the sound pressure level for the raising ground is higher than that of the cutting land with a measurement of 10.7~12.1dB(A). Vertical propagation and attenuation characteristics for the road traffic noise are as follows: The amount of sound pressure level decrease is 12.6- 14.5dB(A) for first floor when measuring the vertical sound pressure levels at soundproof wall, which indicates a fairly large decrease. At fifth and sixth floor, the amount of decrease is 2.3dB(A), which indicates a small decrease.
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강영주,정숙경,신성의 조선대학교 환경연구소 1994 環境公害硏究 Vol.11 No.-
The purpose of this study is an interrelationship of BOD and COD values from the dyeing wastewater and the differences of chromatility according to the various analytical methods. The results wear as follow; 1. The value of BOD (Avg.:59.0㎎/l) and COD (Avg.:60.3㎎/l) was almost same one. 2. Generally, n-Hexane extractive chemicals were within the effluent p4ermiss ion criteria (1.0-4.0㎎/l). 3. The order of chromatility was blue(Avg.334.0 deg.) > yellow (Avg.211.0deg.) > dark pink(Avg.131.7 deg.) according to the test of ransmitance method. 4. The value of chromatility tested with transmitance method were more 1.95 times than those of testing with color meter. 5. The value of chromatility which was not filtered sample were higher 1.47 times than those of filtering sample in the transmitance method. 6. PCE was not detected and TCE was detected in the range of 0-0.097㎎/l.
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