کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1696418 | 1519124 | 2009 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Mineralogical characterization of iron-rich clayey soils from the middle plateau in the southern region of Brazil
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
ژئوشیمی و پترولوژی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
We report mineralogical studies of clayey soils collected in various sites of the middle plateau in Rio Grande do Sul in the southern region of Brazil. The analysis of the XRD patterns indicated quartz, rutile, goethite, hematite and kaolinite in the samples. Mössbauer spectroscopy has been used to study the Fe-bearing species. The Mössbauer spectra of all the samples at room temperature consist of a large paramagnetic doublet, in some cases superimposed on a small sextet, whereas at 77 K a prominent sextet appears, which is associated with goethite and/or a hematite substituted structure. The results indicate that the studied soils have iron oxides with high contents of aluminum.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Clay Science - Volume 42, Issues 3–4, January 2009, Pages 559–562
Journal: Applied Clay Science - Volume 42, Issues 3–4, January 2009, Pages 559–562
نویسندگان
C. Paduani, C.A. Samudio Pérez, D. Gobbi, J.D. Ardisson,