کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7556718 | 1491295 | 2018 | 35 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Magnetic nanocomposite of chitosan-Schiff base grafted graphene oxide for lead analysis in whole blood
ترجمه فارسی عنوان
نانوکامپوزیت مغناطیسی اکسید گرافن پیوند پایه کیتوزان-شیفن برای تجزیه سرب در کل خون
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
A new Schiff base grafted graphene oxide-magnetic chitosan was utilized as a novel sorbent for extraction and quantification of lead ion in blood samples via dispersive magnetic solid phase extraction. The prepared nanocomposite sorbent was characterized by SEM, TEM, FT-IR, XRD, VSM and EDX and the quantification analysis was performed by microsampling flame atomic absorption spectrometry. The important parameters on the extraction efficiency were thoroughly optimized by means of experimental design. Under the optimized conditions, an aliquot of 50â¯mL of sample (pH 6.3) was extracted utilizing 60â¯mg of magnetic nanoparticles during 30â¯min. The sorbent was afterward desorbed using 1.0â¯mL of 0.8â¯molâ¯Lâ1 HNO3 under fierce vortex for 6â¯min. A preconcentration factor of 20 and an absolute recovery of 40% were provided by the proposed method. The limits of detection (3S/N) and quantification (10â¯S/N) were 0.06â¯ngâ¯mLâ1 and 2.0â¯ngâ¯mLâ1, respectively. An excellent linearity was achieved within the range of (10-800) ng mLâ1 and the regression coefficient was 0.9903. The intra- and inter-day RSDs% were found to be 1.8% and 7.0%, respectively. Furthermore, the method was applied for analysis of blood samples and good accuracies within the range of 97%-108% were obtained.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Analytical Biochemistry - Volume 553, 15 July 2018, Pages 28-37
Journal: Analytical Biochemistry - Volume 553, 15 July 2018, Pages 28-37
نویسندگان
Shahram Seidi, Mahshid Majd, Maryam Rezazadeh, Maryam Shanehsaz,