کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10391573 884821 2005 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Characteristics of clay minerals in asian dust and their environmental significance
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Characteristics of clay minerals in asian dust and their environmental significance
چکیده انگلیسی
The objectives of this research were to characterise the clay minerals composition of soil-derived dust in Northern China and to set up a mineralogical signature to trace their origin. Mineral composition of aerosol particles was investigated at Aksu, Dunhuang, Yulin, Tongliao and Changwu during an intensive field campaign period of ACE-Asia. The results show that the kaolinite (K) to chlorite (C) ratio is sensitive to the regional origin of Asian dust. Western source areas (represented by Aksu) displayed the lowest K/C ratio of 0.3 (average), while it was found to increase up to 0.70 (average) upon moving towards northern source areas (represented by Yulin). By studying transported dust in a deposition area representative of the Chinese Loess Plateau, the usefulness of the K/C ratio, when associated with back air-mass trajectories, was found to lie in revealing the origin of the dust. Comparison of the mineralogical data between Asian dust and Sahara dust, shows that the K/C ratio is also an effective signature to identify the source areas on a hemisphere scale.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: China Particuology - Volume 3, Issue 5, October 2005, Pages 260-264
نویسندگان
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