پیشتغلیظ مقادیر ناچیز کلونازپام در نمونههای آبی با نانولوله¬هایکربنی کربوکسیلدارشده
نرگس صالحی
1
(
دانشآموخته مقطع دکترا گروه شیمی، دانشکده شیمی دارویی، دانشگاه علوم پزشکی آزاد اسلامی تهران، تهران، ایران.
)
علی مقیمی
2
(
دانشیار گروه شیمی، دانشکده شیمی دارویی، دانشگاه علوم پزشکی آزاد اسلامی تهران، تهران، ایران.
)
میلاد ابنیکی
3
(
دانشآموخته مقطع دکترا گروه پژوهشی رزین و افزودنیها، پژوهشگاه علوم و فناوری رنگ، تهران، ایران.
)
الکلمات المفتاحية: نانولوله¬های کربنی کربوکسیلدارشده, طیفنور¬سنجی مرئی و فرابنفش, داروی کلونازپام.,
ملخص المقالة :
در این پژوهش، با روش جديد استخراج فاز جامد پخشی مقدارهای ناچیز پسابهای دارویی بهعنوان شاخص داروی کلونازپام در نمونههای آبی با نانولولههای کربنی کربوکسیلدارشده ارائه و اندازهگیری مقدار دارو با طیفسنجی مرئی و فرابنفش در نمونههای حقیقی انجام شد. نانولولههای کربوکسیلدارشده با طیفسنجی فروسرخ تبدیل فوریه (FTIR)، پراش پرتو ایکس (XRD) و میکروسکوپ الکترونی روبشی (SEM) شناسایی شدند. در اين روش، يك سامانه دو فازي بهکارگرفته شد كه در آن فاز دهنده نمونههاي آبي حاوي کلونازپام و فاز گيرنده نانولولههايكربني کربوکسیلدارشده بودند. آزمايشها در دو مرحله استخراج از نمونههاي آبي و واجذب داروی کلونازپام با حلال آمونیاک انجام و نمونههاي واجذبشده براي تجزیه بيشتر با دستگاه طیفسنجی مرئی و فرابنفش بررسی شدند. اين روش ارزان، ساده و سريع است. همچنین، روشی حساس و مطمئن براي استخراج و پيشتغليظ و اندازهگيري مقادیر ناچیز کلونازپام بهحساب میآید. عاملهای مؤثر بر استخراج مانند pH، مقدار و نوع حلال شوینده و زمان استخراج بررسی شدند. فاکتور تغلیظ، مقدار حد تشخیص روش (LOD) و انحراف استاندارد نسبی به ترتیب برابر با 30، 1- mg.l2/1 و 4/2 درصد بهدست آمدند.
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