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HS-SPME/GC-MS를 이용한 수중의 2-MIB와 geosmin 분석 연구
최윤정 ( Yun Jeong Choi ),남숙현 ( Sook Hyun Nam ),황태문 ( Tae Mun Hwang ),오현재 ( Hyun Je Oh ),문잭수 ( Bag Sou Moon ) 한국수처리학회 2015 한국수처리학회지 Vol.23 No.1
Headspace solid-phase microextraction(HS-SPME)/GC-MS is a rapid and sensitive method for the analysis of trace organic pollutants in water. In this study, this method was optimized for the analysis of 2-methylisoborneol(MIB) and geosmin. Operating parameters such as fiber types, extraction temperature, extraction time, desorption temperature, desorption time, and ionic strength were optimized to improve the method accuracy and sensitivity. Among various fibers, divinylbenzene/carboxen/polydimethylsiloxane (DVB/CAR/PDMS)-coated fiber provided effective response enhancement. The fiber extraction efficiency was the highest at 60 ℃ for 30 minutes. Desorption time of three minutes was enough for complete desorption at 265 ℃ with a NaCl concentration of 25 %. The linearity of this method for the analysis of 2-MIB and geosmin within the range of 0-100 ng/L was satisfactory with a correlation coefficient above 0.998. The LODs of 2-MIB and geosmin in 1 ng/L sample were 0.50 and 0.73 ng/L, respectively.
유해 중금속 제거를 위한 소규모 정수처리용 여재 성능평가 연구
여인설 ( In-seol Yeo ),박승민 ( Seung-min Park ),박재로 ( Jae-roh Park ),오현재 ( Hyun-je Oh ),박찬규 ( Chan-gyu Park ) 한국수처리학회 2016 한국수처리학회지 Vol.24 No.3
In case of Mongolia, even though awareness of the water environment is gradually increased, it is not easy to receive the supply of clean water due to the shortage of water treatment facilities and specialized personnel aging. In addition, ground water quality is also poor with lots of mineral contents including hazardous heavy metal ions. Thus, small-scale water treatment package system, which has considered to design high work performance, portability, low cost and easy replacement, is consist of adsorbent module using alum sludge and zeolite. In this study, batch adsorption tests were conducted using alum sludge and zeolite with heavy metal ions such as arsenic, iron and manganese in order to evaluate applicability in the package system. In the results of experiment, although there are differences of removal rate in accordance with the substance, alum sludge hold great potential to remove cationic and anionic heavy metal species simultaneously with zeolite. Thus, when it applies to small scale water treatment package system in Mongolia, it is able to remove hazardous heavy metal ions effectively.