نوع مقاله : مقاله پژوهشی کامل
نویسندگان
1 دانشگاه پیام نور مرکز کرمان
2 بخش شیمی، دانشگاه پیام نور، تهران، ایران
چکیده
یک الکترود کربن شیشه ای توسط نانولوله های کربنی چند دیواره عامل دار شده با 2و6 دی کلروفنولیندوفنول اصلاح گردید. تثبیت این ماده بر روی نانولوله های کربنی توسط اسپکتروسکوپی جذبی UV-vis و FT-IR تایید و به روش ولتامتری چرخه ای اندازه گیری شد.
پاسخ الکترود اصلاح شده دلالت بر پیشرفت فرایند الکتروکاتالیتیکی، حساسیت و پایداری و تعیین یون های سولفید داشت. ضمن اینکه وابستگی جریان به غلظت سولفید بررسی و گستره خطی 1.8 میکرو مولار تا 2.5 میلی مولار بدست آمد. حد تشخیص سولفید 1.1 میکرومولار و RSD برای سولفید با غلظت های 10 و 100 میکرومولار به ترتیب 1.8 و 1.3 درصد بدست آمد. یون های مزاحم کم تاثیر و یا بدون تاثیر بر روی یون سولفید بودند. روش رای تعیین سولفید در نمونه های آبی بکاربرده شد.
کلیدواژه‌ها
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