期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 120, 期 2, 页码 673-678出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2006.03.028
关键词
Eu(III); ion-selective electrode; S-N hexadentates Schiff's base
A novel potentiometric membrane Eu(III) ion sensor is described based on a new S-N hexadentates Schiff's base, bis(thiophenol)butane2,3-dihydrazone (SNSB). The sensor exhibited a Nernstian response over a concentration range of 1.0 x 10(-5) to 1.0 x 10(-2) M, with a detection limit of 5.0 x 10(-6) M. The best performance was achieved with a membrane composition of 30% PVC, 63% o-nitrophenyloctyl ether (NPOE), 5% SNSB, and 5% (0.010 mmol) potassium tetrakis(p-chlorophenyl) borate (KTpClPB). It was found that in the pH range of 3.0-8.5, the potential response of the sensor was not affected by the pH. Furthermore, the electrode presented satisfactory reproducibility, very fast response time (< 5 s), and relatively good discriminating ability for Eu(III) ions with respect to many common cations and lanthanide ions, including sodium, potassium, magnesium. calcium, copper, nickel, cobalt, zinc, lead, lanthanum, cerium, gadolinium, samarium, ytterbium, presidium, terbium, neodymium, holmium. erbium, thulium, lutetium, dysprosium, iron and chromium metal ions. The sensor was applied to the determination of fluoride ions in two mouth wash preparations and binary mixtures. (c) 2006 Elsevier B.V. All fights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据