کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6330848 | 1619786 | 2014 | 15 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Sources of mercury in groundwater and soils of west Gijón (Asturias, NW Spain)
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موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم محیط زیست
شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Sources of mercury in groundwater and soils of west Gijón (Asturias, NW Spain) Sources of mercury in groundwater and soils of west Gijón (Asturias, NW Spain)](/preview/png/6330848.png)
چکیده انگلیسی
This work aimed to determine the cause of the presence of high concentrations of mercury in several springs that exhibit a low concentration of metals in the bedrocks of their recharge areas in Gijón, NW Spain and the extent of this contamination. On the basis of geological mapping, different lithological substrata were analysed at the regional scale with the objective of establishing the base level of mercury in natural soils. The mercury content was simultaneously analysed in several water samples, and the following parameters were also determined: major anions and cations, As, Pb, δ34S, and δ18OSO4. The soils of the recharge area of the springs exhibited Hg concentrations that were higher than the base level established for sandstone at the regional level, and four of the total number of springs analysed exhibited Hg concentrations higher than 1 μg/l. In addition, the sulphate concentration exceeded the values that this type of aquifer shows in other parts of the region. A comparison between the regionally geochemical background of soils and mercury concentration in springs and soils of the study area did not exhibit a direct relationship, suggesting an anthropogenic and timely origin (most likely from industrial emissions) for this metal. The δ34S and δ18OSO4 values of dissolved sulphate from the springs with a higher Hg concentration also indicate an anthropogenic origin.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Science of The Total Environment - Volume 481, 15 May 2014, Pages 217-231
Journal: Science of The Total Environment - Volume 481, 15 May 2014, Pages 217-231
نویسندگان
B. González-Fernández, E. Menéndez-Casares, Mónica Meléndez-Asensio, Susana Fernández-Menéndez, F. Ramos-Muñiz, P. Cruz-Hernández, A. González-Quirós,