کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7640596 | 1494854 | 2018 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Determination of tetracycline and cefotaxime residues in honey by micro-solid phase extraction based on electrospun nanofibers coupled with HPLC
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Determination of tetracycline and cefotaxime residues in honey by micro-solid phase extraction based on electrospun nanofibers coupled with HPLC Determination of tetracycline and cefotaxime residues in honey by micro-solid phase extraction based on electrospun nanofibers coupled with HPLC](/preview/png/7640596.png)
چکیده انگلیسی
In the present study, electrospun polyethylene terephthalate nanofibers doped with graphene oxide nanoparticles (GO-PET) was fabricated and used as an effective adsorbent in micro-solid phase extraction (μ-SPE) of tetracycline (TC) and cefotaxime (CF) from honey samples prior to HPLC. The UV-vis spectrophotometer was utilized in the optimization step. The adsorbent was fully characterized using SEM, FT-IR, BET, and BJH methods. The specific surface area and average pore size of the adsorbent were 79.5â¯m2â¯gâ1 and 4.83â¯nm, respectively. The honey samples were dissolved in water (5% w/v) at 50â¯Â°C for 10â¯min, centrifuged at 4000â¯rpm for 15â¯min and finally filtered using a filter paper before performing the extraction. The important factors of the method were studied to obtain the optimal conditions. Under the optimum conditions (sample solution, 100â¯mL; adsorbent, 40â¯mg; pHâ¯5; extraction time, 10â¯min; desorption solvent; MeOH, 200â¯Î¼L), the limits of detection for TC and CF were 15.3 and 3.0â¯Î¼gâ¯kgâ1. The linear dynamic range (LDR) was obtained as 10-5000â¯Î¼gâ¯kgâ1 with the determination coefficients (R2) of 0.9939 and 0.9959, respectively. The real sample extraction recoveries were 89-94% and 95-98% for TC and CF, respectively. The intra-day and inter-day precisions were 5.6 and 4.9% (nâ¯=â¯3) for TC, and 3.6 and 4.5% (nâ¯=â¯9) for CF.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Microchemical Journal - Volume 140, July 2018, Pages 241-247
Journal: Microchemical Journal - Volume 140, July 2018, Pages 241-247
نویسندگان
Batoul Arabsorkhi, Hassan Sereshti,