نوع مقاله : مقاله پژوهشی کامل
نویسندگان
1 گروه شیمی، دانشگاه آزاد اسلامی یزد، یزد، ایران
2 گروه شیمی، دانشگاه آزاد اسلامی شیراز، شیراز، ایران
چکیده
در این مطالعه، یک روش ساده و حساس برای پیش تغلیظ و اندازه گیری اسپروتترامات (سم) با استفاده از تکنیک میکرواستخراج مایع-مایع پخشی جفت شده با کروماتوگرافی مایع با عملکرد بالا توسعه داده شده است. پس از استخراج اسپیروتترامات با مایع یونی 1-بوتیل-3-متیل ایمیدازولیوم هگزافلوئوروفسفات، این سم از محلول جدا شده و به دستگاه کروماتوگرافی جهت اندازه گیری تزریق می شود. در شرایط بهینه، یک گستره خطی در محدوده 05/0 تا 2میکروگرم بر میلی لیتر حاصل شد (9987/0 =R2) و همچنین فاکتور تغلیظ 250 بود. حدتشخیص و انحراف استاندارد نسبی به ترتیب 0.01 و 2.7 میکروگرم بر میلی لیتر بدست آمد. روش پیشنهادی برای پیش تغلیظ و اندازه گیری اسپیروتترامات در نمونه های آبی تزریق شده بطور موفقیت آمیزی بکار گرفته شد که متوسط بازیابی ها بین 94 تا 96 درصد شد.
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