کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9745515 | 1491574 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
X-ray scattering processes and chemometrics for differentiating complex samples using conventional EDXRF equipment
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: X-ray scattering processes and chemometrics for differentiating complex samples using conventional EDXRF equipment X-ray scattering processes and chemometrics for differentiating complex samples using conventional EDXRF equipment](/preview/png/9745515.png)
چکیده انگلیسی
Mild variations in organic matrices, which are investigated in this work, are caused by alterations in X-ray Raman scattering. The multivariate approaches, principal component analysis (PCA) and hierarchical cluster analysis (HCA), are applied to visualize these effects. Conventional energy-dispersive X-ray fluorescence equipment is used, where organic compounds produce intense scattering of the X-ray source. X-ray Raman processes, before obtained only for solid samples using synchrotron radiation, are indirectly visualized here through PCA scores and HCA cluster analysis, since they alter the Compton and Rayleigh scattering. As a result, their influences can be seen in known sample characteristics, as those associated with gender and melanin in dog hairs, and the differentiation in coconut varieties. Chemometrics has shown that, despite their complexity, natural samples can be easily classified.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemometrics and Intelligent Laboratory Systems - Volume 78, Issues 1â2, 28 July 2005, Pages 96-102
Journal: Chemometrics and Intelligent Laboratory Systems - Volume 78, Issues 1â2, 28 July 2005, Pages 96-102
نویسندگان
Maria Izabel Maretti Silveira Bueno, Martha T.P.O. Castro, Aline Moreira de Souza, Erica Borges Santana de Oliveira, Alete Paixão Teixeira,