چاپ صفحه |  صفحه نخست سامانه |  چکیده مقاله |  نویسندگان |  دانلود مقاله | دانشگاه علوم پزشکی تبریز |
| Simultaneous derivatization and air-assisted liquid–liquid microextraction using an organic solvent lighter than water has been developed for the extraction of some parabens in different samples with the aid of a newly designed device for collecting the extractant. For this purpose, the sample solution is transferred into a glass test tube and a few microliters of acetic anhydride (as a derivatization agent) and p-xylene (as an extraction solvent) are added to the solution. After performing the procedure, the homemade device consists of an inverse funnel with a capillary tube placed into the tube. In this step, the collected extraction solvent and a part of the aqueous solution are transferred into the device and the organic phase indwells in the capillary tube of the device. Under the optimal conditions, limits of detection and quantification for the analytes were obtained in the ranges of 0.90–2.7 and 3.0–6.1 ng mL−1 , respectively. The enrichment and enhancement factors were in the ranges of 370–430 and 489–660, respectively. The method precision, expressed as the relative standard deviation, was within the ranges of 4–6% (n=6) and 4–9% (n=4) for intra- and inter-day precisions, respectively. The proposed method was successfully used for the determination of methyl-, ethyl-, and propyl parabens in cosmetic, hygiene, and food samples, and personal care products. |
| نویسنده | نفر چندم مقاله |
|---|---|
| محمدرضا افشار مقدم | سوم |
| علی اکبر علیزاده نبیل | چهارم |
| نام فایل | تاریخ درج فایل | اندازه فایل | دانلود |
|---|---|---|---|
| Derovatizatin-Bakhshizadeh-JSS.pdf | 1398/10/11 | 1074065 | دانلود |
