AVS 57th International Symposium & Exhibition
    Biomaterial Interfaces Thursday Sessions
       Session BI-ThP

Paper BI-ThP6
Enzymeless Flow Injection Analysis of 2,4,6-Trichlorophenol Based on Preoxidation by Ammonium Cerium (IV) Nitrate

Thursday, October 21, 2010, 6:00 pm, Room Southwest Exhibit Hall

Session: Biomaterial Interfaces Poster Session
Presenter: J.S. Wang, National Applied Research Laboratories, Taiwan, Republic of China
Correspondent: Click to Email
Enzymeless flow injection analysis of 2,4,6-trichlorophenol (2,4,6-TCP) based on preoxidation by ammonium cerium (IV) nitrate is present in this work. A preoxidation scheme is applied for 2,4,6-TCP determination without any enzyme treatment. This preoxidation scheme can provide a determination method with low cot and non-conductive polymerization reaction of 2,4,6,-TCP. In proposed scheme, the 2,4,6-TCP is oxidized to 2,6-dichloro-1,4-benzoquinone by ammonium cerium (IV) nitrate and the 2,6-dichloro-1,4-benzoquinone can be detect at low reduction potential. The linear range of 2,4,6-TCP determination was 0.4 to 750 mM with correlation coefficient (R2) 0.9999 and the estimated detection limit (S/N=3) was 40 nM which were demonstrated by flow injection analysis. Twenty consecutive successive detect of 100 mM 2,4,6-TCP showed the relative standard deviation was 1.56 %. Several 2,4,6-TCP structure-like compounds were studied as interferences including 2,4-dichlorophenol, 2-chlorophenol, phenol and 4-aminophenol. No obviously influences were observed. Two water samples which were collected from local farm and pool were adopted as analytical application. The recoveries of two water samples are 105.2 % and 107.5%, respectively. An easy operation and enzymeless treatment detection scheme of 2,4,6-TCP is illustrated at this work.