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자료유형
학술저널
저자정보
저널정보
한국환경분석학회 환경분석과 독성보건 한국환경분석학회지 제16권 제4호
발행연도
2013.1
수록면
250 - 255 (6page)

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The study conducted an experiment with copper ion SCEs, which used tetraisopropylthiuram disulfate as an ionophore, by changing the composition based on six plasticizers and lipotropy. The composition that showed the best response slope and response characteristic against copper ion was found when ionophore:PVC:o-NPOE:KTpClPB was 5.0:20.0:25.0:4.0. This composition had a response slope of 35.5 mV/decade within the range of 1.0×10-1.0~1.0×10-7.0M. In terms of the effect of interference ion, a minor interference was observed in zinc, while most of the other ions experienced relatively little interference. They showed consistent potentiometric responses, unaffected by pH fluctuations between 5.0 and 8.0, with 260 seconds of stabilization time and 18 seconds of response time. This indicates that it may be allowed to make practical use of such response characteristics when pH is in the above range. The standard deviation measured ten times each on 1.0×10-2.0M and 1.0×10-3.0M copper solutions was found to be 1.31 mV and 1.92 mV, respectively. The lifetime of electrode was about four months. They showed the exact response to cadmium ion disappearing in the measuring solution through EDTA titration.

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