مشخصات پژوهش

عنوان	Triiodide Ion-Selective Electrode Based on Charge-Transfer Complex of 4,7,13,16,21,24-Hexaoxa-1,10-diazabicyclo-[8.8.8]hexacosane
نوع پژوهش	مقاله چاپ‌شده در مجلات علمی
کلیدواژه‌ها	Triiodide-selective electrode; Cryptand; Charge-transfer complex; Potentiometry.
چکیده	Two new highly selective triiodide electrodes have been prepared using charge-transfer complex of iodine with cryptand 222 as an electroactive ionophore and nitrophenyl octyl ether as a plasticizing agent. The electrodes showed Nernstian response to triiodide ions over a concentration range from 1.0 10-2  7.9 10-7 M and from 1.0 10-2  1 10-6 M with detection limits of 6.3 10-7 and 7.9 10-7 M for cryptand and its charge-transfer complex with iodine, respectively. The response times (t95%) of the sensors were 10 and 5 s. The membrane could be used for more than 1 month without any divergence in potentials. The proposed sensors exhibited very high selectivity for triiodide ion over other anions, and could be used in a wide pH range ~ 2-10. These electrodes were successfully applied as an indicator electrode in potentiometric titration of copper in ore samples.
پژوهشگران	عبدالله سلیمی (نفر چهارم)، فاطمه صالحی کارونیان (نفر سوم)، هادی رضاتبار (نفر دوم)، غلامرضا خیاطیان (نفر اول)