کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4426518 1309128 2009 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Single walled carbon nanotube reactivity and cytotoxicity following extended aqueous exposure
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Single walled carbon nanotube reactivity and cytotoxicity following extended aqueous exposure
چکیده انگلیسی

Globally carbon nanoparticles are increasingly utilized, yet it is not known if these nanoparticles pose a threat to the environment or human health. This investigation examined ‘as-prepared’, and acid cleaned carbon nanoparticle physicochemical characteristics (by FTIR, TEM, FESEM, UV–VIS and X-ray microanalysis), and whether these characteristics changed following 2.5–7 yr exposure to pH neutral saline or fresh water. To determine if these aqueous aged nanotubes were cytotoxic, these nanotubes were incubated with human epithelial monolayers and analyzed for cell viability (vital staining) and ultrastructural nanoparticle binding/localization (TEM, FESEM). The presence of Ni and Y catalyst, was less damaging to cells than CNT lattice surface oxidation. Extended fresh water storage of oxidized CNTs did not reduce surface reactive groups, nor lessen cell membrane destruction or cell death. However storing oxidized CNTs in saline or NOM significantly reduced CNT-induced cell membrane damage and increased cell survival to control levels.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Environmental Pollution - Volume 157, Issue 4, April 2009, Pages 1140–1151
نویسندگان
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