کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6309820 1618876 2014 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Characterization of the Danube River sediments using the PMF multivariate approach
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Characterization of the Danube River sediments using the PMF multivariate approach
چکیده انگلیسی


- PMF was used to characterize the Danube River and its tributaries sediments.
- Most of the measured heavy metals resulted bound to natural processes.
- Spatial distribution maps successfully identified the impact of resolved sources.
- The anthropogenic source showed an higher impact in the tributaries.

Chemical composition data for the Danube River and its tributaries sediments were analyzed using positive matrix factorization (PMF). The objective was to identify both natural and anthropogenic sources affecting Danube Basin. During the Joint Danube Survey 2 (JDS2) campaign 148 bottom sediments samples were collected. The following elements were analyzed using the X-ray fluorescence technique: Al, As, Ca, Cd, Cl, Co, Cr, Cu, Fe, K, Mg, Mn, Na, Ni, P, Pb, S, Si, Ti, V and Zn. Mercury was determined by cold vapour atomic absorption spectrometry. Three factors were obtained considering the whole dataset (Danube and tributaries), identified as: (i) carbonate component characterized by Ca and Mg; (ii) alumino-silicate component dominated by Si and Al content and the presence of some metals attributed to natural processes; (iii) anthropogenic source identified by Hg, S, P and some heavy metals load. To better characterize the role of tributaries, the Danube and tributaries datasets, were also analyzed separately. The same three factor structures were identified in the Danube dataset. For the tributaries, a four-factor source model gave one further factor dominated by S and P, which could be attributed to the use of fertilizers in agriculture.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemosphere - Volume 95, January 2014, Pages 329-335
نویسندگان
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