کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7557055 | 1491305 | 2018 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Voltammetric determination of thujone in herbal matrices in the presence of Triton X-100
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Experimental conditions, such as composition of supporting electrolyte, concentration of Triton X-100 and operation parameters were established. The optimal electrolyte should contain: 0.04 mol Lâ1 phosphoric acid (pH = 1.9) or 0.05 mol Lâ1 potassium nitrate (pH = 6.4), 0.0002% Triton X-100 and 9.6% ethanol. The calibration graph was linear from 0.7 to 140 mgLâ1 of thujone in H3PO4 as supporting electrolyte and from 0.7 to 115 mgLâ1 of the analyte in KNO3. The detection limit was 0.4 mgLâ1 in H3PO4 and 0.6 mgLâ1 in KNO3, with the correlation coefficient of 0.998. The influence of interfering substances, such as Al(III), Bi(III), Cd(II), Cr(III), Cu(II), Pb(II), Tl(I), V(III) and Zn(II) was studied. The proposed method was validated by the thujone recovery study from the specially prepared spiked herbal matrices and alcohol extract. The considered real sample was thuja oil, in which thujone was successfully determined. All measurements were performed without sample preparation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Analytical Biochemistry - Volume 543, 15 February 2018, Pages 12-20
Journal: Analytical Biochemistry - Volume 543, 15 February 2018, Pages 12-20
نویسندگان
Mateusz Kowalcze, MaÅgorzata Jakubowska,