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Received June 30, 2014
Accepted August 2, 2014
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중금속 검지를 위한 디티존 기능화된 폴리스티렌 제조
Preparation of Dithizone Functionalized Polystyrene for Detecting Heavy Metal Ion
광운대학교 화학공학과, 139-701 서울시 노원구 월계동 447-1
Department of Chemical Engineering, Kwangwoon University, 447-1 Wolgye-dong, Nowon-gu, Seoul 139-701, Korea
korea1@kw.ac.kr
Korean Chemical Engineering Research, April 2015, 53(2), 243-246(4), 10.9713/kcer.2015.53.2.243 Epub 30 March 2015
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Abstract
색센서는 액상 내 존재하는 특정 물질에 대하여 선택적인 색상변화를 통하여 대상물질을 검지할 수 있다. 기존 유기염료를 이용한 색센서는 단일종의 중금속 이온만을 검지한다는 단점이 있지만, 디티존(dithizone, DTZ)은 최소 5개 이상의 중금속 이온을 서로 다른 색상 변화로 검지해 낼 수 있다는 장점이 있다. 즉 다중검지용 색센서 물질로 사용할 수 있다. 그러나 디티존은 액상에서 주로 사용되어서 종이나 분말형태로 제조된 사례가 없어서 활용범위가 제한적이다. 이에 본 연구에서는 폴리스티렌(polystyrene, PS)과 디티존을 결합시켜 DTZ/PS 펠렛을 제조하여 10가지 중금속 이_x000D_
온에 대한 선택적인 색상변화를 관찰하였다. 제조한 DTZ/PS 펠렛에 대하여 10 ppm의 중금속 이온의 노출 결과, 수은과 코발트가 뚜렷한 색상 변화를 보였으며 선택적인 중금속 이온 검지에 활용할 수 있음을 확인하였다.
Colorimetric sensors were usually used to detect specific metal ions using selective color change of solutions. While almost organic dye in colorimetric sensors detected single molecule, dithizone (DTZ) solution could be separately detected above 5 kinds of heavy metal ions by the change of clear color. Namely, DTZ could be used as multicolorimetric sensors. However, DTZ was generally used as aqueous type and paper/pellet-type DTZ was not reported yet. Therefore, in this work, polystyrene (PS) was prepared to composite with DTZ and then DTZ/PS pellet was obtained, which was used to selectively detect 10 kinds of heavy metal ions. When 10 ppm of Hg and Co ions was exposed in DTZ/PS pellets, clear color change was revealed. It is noted that DTZ/PS pellet could be used in detecting of heavy metal ion as dry type.
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Absalan G, Goudi AA, Sep. Purif. Technol., 38(3), 209 (2004)
Cestari AR, Vieira EFS, Lopes ECN, da Silva RG, J. Colloid Interface Sci., 272(2), 271 (2004)
Mahmoud ME, Osman MM, Amer ME, Anal. Chimi. Acta, 415, 33 (2000)
Kim Y, Kim C, Yi J, Mater. Res. Bull., 39(13), 2103 (2004)
Takahashi Y, Kasai H, Nakanishi H, Suzuki TM, Angew. Chem. Int. Ed., 45, 913 (2006)
