کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4458573 1620962 2006 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Methodologies for amorphous silica analysis
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات زمین شناسی اقتصادی
پیش نمایش صفحه اول مقاله
Methodologies for amorphous silica analysis
چکیده انگلیسی

Different methodologies have been investigated for their ability to extract amorphous silica (ASi) from soils and plant phytoliths. Methodologies typically used in soil science, including oxalate, acetate and citric extractions, were used in addition to an alkaline digestion technique commonly used in the aquatic sciences. Initial results show that the alkaline technique extracts nearly an order of magnitude greater amount of ASi. The alkaline extraction technique was tested on soil samples with and without acid and peroxide pre-cleaning. Samples, which were not pre-cleaned, showed a poor extraction efficiency of amorphous silica and poor reproducibility, while cleaned soil samples gave better reproducibility and an increase in the amount of Si extracted.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Geochemical Exploration - Volume 88, Issues 1–3, January–March 2006, Pages 235–238
نویسندگان
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