کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4420544 1618977 2012 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Potential of monitoring nuclides with the epiphyte Tillandsia usneoides: Uptake and localization of 133Cs
کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Potential of monitoring nuclides with the epiphyte Tillandsia usneoides: Uptake and localization of 133Cs
چکیده انگلیسی

Epiphytic Tillandsia plants are efficient air pollution biomonitors and traditionally used to monitor atmospheric heavy metal pollution, but rarely nuclides monitoring. Here we evaluated the potential of Tillandsia usneoides for monitoring 133Cs and investigated if Cs was trapped by the plant external surface structures. The results showed that T. usneoides was able to survive relatively high Cs stress. With the increase of Cs solution concentration, the total of Cs in plants increased significantly, which suggests that the plants could accumulate Cs quickly and effectively. Therefore, T. usneoides has considerable potential for monitoring Cs polluted environments. In addition, scanning electron microscopy (SEM) and energy dispersive spectrometer (EDS) analysis showed that Cs was detected in each type of cells in foliar trichomes, and the ratio of Cs in the internal disc cell was higher than that in ring cell and wing cell, which indicates that the mechanism of adsorption Cs in Tillandsia has an active component.


► Epiphytic Tillandsia plants have high potential for monitoring 133Cs.
► Cs is highly absorbed by foliar trichomes of T. usneoides.
► The ratio of Cs in the internal cell was higher than those in external cells.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ecotoxicology and Environmental Safety - Volume 86, 1 December 2012, Pages 60–65
نویسندگان
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