کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10560472 | 969736 | 2011 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Fast and direct determination of butylated hydroxyanisole in biodiesel by batch injection analysis with amperometric detection
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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: Fast and direct determination of butylated hydroxyanisole in biodiesel by batch injection analysis with amperometric detection Fast and direct determination of butylated hydroxyanisole in biodiesel by batch injection analysis with amperometric detection](/preview/png/10560472.png)
چکیده انگلیسی
We report here, for the first time, application of batch injection analysis (BIA) with amperometric detection for determination of the phenolic antioxidant butylated hydroxyanisole (BHA) in biodiesel. A sample plug was directly injected onto a boron-doped diamond electrode immersed in 50% v/v hydroethanolic solution with 0.1 mol Lâ1 HClO4 using an electronic micropipette. Importantly, the only preparation step required for biodiesel analysis is dilution in the same hydroethanolic electrolyte solution. Our proposed method has several advantages for routine biodiesel analysis, including: a low relative standard deviation between injections (0.29%, n = 20), high analytical frequency (120 hâ1), adequate recovery values (93-101%) for spiked samples, satisfactory accuracy (based on comparative determinations by high-performance liquid-chromatography), and a low detection limit (100 ng of BHA per g of biodiesel). Finally, our method can be adapted for the determination of other antioxidants in biodiesel samples.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Talanta - Volume 85, Issue 3, 15 September 2011, Pages 1274-1278
Journal: Talanta - Volume 85, Issue 3, 15 September 2011, Pages 1274-1278
نویسندگان
Thiago Faria Tormin, Denise Tofanello Gimenes, Eduardo Mathias Richter, Rodrigo Alejandro Abarza Munoz,