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암모니아 공간분포 조사를 위한 Passive Sampler 개발에 관한 연구
김학민,이범진,김선태 대전대학교 환경문제연구소 2001 환경문제연구소 논문집 Vol.5 No.-
Passive and active samplers are widely deployed for measuring gaseous pollutants such as nitrogen dioxide, sulfur dioxide and ozone in urban and rural air, however odorous compounds like ammonia, hydrogen sulfide are rarely deployed, because they are easily changed by circumstance conditions and perceived that they need a large number of measuring sites to assess mean concentration over the area. So, it is considered that the odor related phenomena could not be easily defined by cost-effective and convenient method. In this study, we developed the new sampling tool for ammonia evaluation in ambient air and the results of evaluation for evaluate the suitability of developed passive sampler for the measurement of daily averaged ammonia concentrations and spatial distribution survey are presented. Three types of absorbing solutions, filters and caps were tested at laboratory condition and the conversion factor, precision and suitability of the samplers were derived from triplicated measurement at paper mill. It is defined that for absoubing ammonia, 2% of phosphoric acid and glycerine mix(1:1) solution and chromatography filter are suitable and rubber cap is unsuitable to use during sampling and storage period. The conversion factor was derived 7.0μA at ordinary ambient air by comparison with reference method(indo-phenol method) at three different conditions. The calculated results of standard deviation among the samplers were lower than 2ppb at 86% sampling sites of total 40 sites and we could recognize the ammonia sources and variation with change of wastewater treatment plant process. Therefore the developed passive samplers are appropriate to survey ammonia spatial distrivution.
김학민,Kim, Hak-Min 한국데이터베이스진흥원 2004 디지털콘텐츠 Vol.3 No.-
기술의 발전과 정신을 차리기 힘들 정도로 쏟아져 나오는 정보들로 인해 기존의 전통적 시각언어들은 벌써 형태적으로나 기능적으로 위기를 맞고 있다. 동영상에 기반을 둔 상호간의 의사소통은 이제 더 많은 것을 요구한다. 소프트웨어의 기술과 전통방식의 디자인을 결합하는 것만으로는 불충분하다. 앞으로의 모션그래픽은‘어떤 방식으로 메시지와 디자인, 시간, 움직임을 융합할 것인가’가 중요하다.