Solid Phase Extraction–Spectrophotometric Determination of Phosphate Using Modified Magnetite Nanoparticles as Extractor
محل انتشار: دوفصلنامه ایرانی شیمی تجزیه، دوره: 1، شماره: 1
سال انتشار: 1393
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 380
فایل این مقاله در 5 صفحه با فرمت PDF قابل دریافت می باشد
- صدور گواهی نمایه سازی
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
JR_IJAC-1-1_002
تاریخ نمایه سازی: 6 شهریور 1396
چکیده مقاله:
In this work, a new, simple and fast method for the solid phase extraction-spectrophotometric determination of phosphate using cetyltrimethyl ammonium bromide immobilized on alumina-coated magnetite nanoparticles, (CTAB@ACMNPs) has been developed. The determination of phosphate is based on the molybdenum blue method which was monitored at λmax of 810 nm. MNPs and ACMNPs characterized by SEM, VSM, and XRD spectroscopy. This method avoided the time-consuming column-passing process of loading large volume samples in traditional SPE through the rapid isolation of CTAB@ACMNPs with an adscititious magnet. Under the optimal experimental conditions, the preconcentration factor (PF), detection limit (DL), linear range (LR) and relative standard deviation (RSD) of phosphate were 80 (for 400 mL of sample solution), 0.038 μg mL−1, 0.8-10.0 μg mL−1 and 2.5 % (for 5.0 μg mL-1, n=7), respectively. The proposed method was successfully applied to the separation/preconcentration and determination of phosphate in different water samples and suitable recoveries were obtained.
کلیدواژه ها:
نویسندگان
Mohammad Ali Karimi
Department of Chemistry, Payame Noor University, Tehran, Iran
Abdolhamid Hatefi-Mehrjardi
Department of Chemistry, Payame Noor University, Tehran, Iran
Alireza Mohadesi
Department of Chemistry, Payame Noor University, Tehran, Iran
Sayed Zia Mohammadi
Department of Chemistry, Payame Noor University, Tehran, Iran