چاپ صفحه |  صفحه نخست سامانه |  چکیده مقاله |  نویسندگان |  دانلود مقاله | دانشگاه علوم پزشکی تبریز |
| An air-assisted liquid-liquid microextraction method has been developed by gas chromatography-flame ionization detection for the extraction, derivatization, and determination of five short chain fatty acids including acetic acid, propionic acid, butyric acid, valeric acid, and caproic acid from different fruit juices. In this method, butyl chloroformate was used as extraction solvent and derivatization agent, simultaneously. For this purpose, sample solution was adjusted at pH 8 and then mixed with picoline (as a catalyst). Next, a few microliters of butyl chloroformate was added to the solution and after performing predetermined extraction cycles, the obtained cloudy solution was centrifuged. An aliquot of the sedimented phase was injected into the determination system. Low limits of detection (3.23–9.63 ng/mL) and quantification (10.8–32.4 ng/mL) were obtained. The method had a proper repeatability (relative standard deviations ≤ 7.38%) for intra- (n = 6) and interday (n = 5) precisions at a concentration of 50 ng/mL (each analyte). High enrichment factors (360–415), extraction recoveries (72–93%), and enhancement factors (1126–1852) were obtained. The developed method was successfully used in determination of the analytes in the studied samples. |
| نویسنده | نفر چندم مقاله |
|---|---|
| فاطمه اسدی | اول |
| محمدرضا افشار مقدم | دوم |
| علی شایان فر | چهارم |
| محبوب نعمتی | پنجم |
| نام فایل | تاریخ درج فایل | اندازه فایل | دانلود |
|---|---|---|---|
| Assadi-SCP-2021.pdf | 1400/04/21 | 810632 | دانلود |
