کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1244754 | 969699 | 2007 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A chemometric sensor for determining sulphaguanidine residues in honey samples
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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: A chemometric sensor for determining sulphaguanidine residues in honey samples A chemometric sensor for determining sulphaguanidine residues in honey samples](/preview/png/1244754.png)
چکیده انگلیسی
The inclusion complex of sulphaguanidine (SGN) in β-cyclodextrin has been investigated. To avoid the problem of the low solubility of β-cyclodextrin in water, solutions of β-cyclodextrin in urea have been used. A 1:1 stoichiometry and an association constant of 450 Mâ1 have been established for the complex. A new spectrofluorimetric method has been developed for the determination of SGN residues in honey samples. This sulphonamide is widely employed for honey treatment. The method for the determination is based on second-order multivariate calibration, applying parallel factor analysis (PARAFAC). No previous separation or samples pre-treatment were required. The calibration solutions were prepared in water, with concentrations in the range from 0.02 to 0.20 μg mLâ1 for SGN. The use of the second-order calibration method in the standard addition mode, using the excitation-emission matrices (EEMs) as analytical signal, allowed its determination in honey samples, even in the presence of interferences, with satisfactory results. The proposed procedure was validated by comparing the obtained results with a HPLC method, with satisfactory results for the assayed method.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Talanta - Volume 73, Issue 2, 15 September 2007, Pages 304-313
Journal: Talanta - Volume 73, Issue 2, 15 September 2007, Pages 304-313
نویسندگان
A. Muñoz de la Peña, N. Mora Diez, M.C. Mahedero GarcÃa, D. Bohoyo Gil, F. Cañada-Cañada,