1,2-bis(N , N’-benzylthioureido)benzene을 ionophore로 이용한 수은 이온 선택성 고체 접촉 전극Mercury Ion Selective Solid Contact Electrode Based on 1,2-bis(N,N’-benzylthioureido)benzene Ionophore
- Other Titles
- Mercury Ion Selective Solid Contact Electrode Based on 1,2-bis(N,N’-benzylthioureido)benzene Ionophore
- Authors
- 한원식; 오세림; 이정란; 안성민; 홍태기
- Issue Date
- Mar-2013
- Publisher
- 한국환경분석학회
- Keywords
- Hg; Hg electrode; Ion selective electrode (ISE)
- Citation
- 환경분석과 독성보건, v.16, no.1, pp.57 - 61
- Journal Title
- 환경분석과 독성보건
- Volume
- 16
- Number
- 1
- Start Page
- 57
- End Page
- 61
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/15657
- ISSN
- 2672-0175
- Abstract
- Mercury (II) ion selective poly(aniline) solid contact electrode based on 1,2-bis(N,N’-benzylthioureido)ben-zene ionophore as two sulfurs containing sensing material is successfully developed. The electrode exhibits good linear response of 29.8 mV / decade (at 20 ± 0.2oC, r 2=0.9954) within the concentration range of 1 × 10-2.0~1 × 10-6.0M Hg (II). The composition of this electrode was 2BTB 2.5 : polyvinylchloride 16.5 : 2-nitrophe-nyloctyl ether 30.5 : potassiumtetrakis(4-chlorophenyl)borate 2.0. The electrode shows good selectivity for mer-cury (II) ion in comparison with alkali, alkaline earth, transition and heavy metal ions. This electrode is suitable for use with aqueous solutions of pH 3.0~7.0 and their standard deviation in the measured emf differences was ± 1.21 mV at mercury nitrate sample solution of 1.0 × 10-2M and 1.0 × 10-3M, respectively. Their stabilization time was less than 72 s. and response time was less than 50 s.
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