Toxic nanoparticles

Xem 1-7 trên 7 kết quả Toxic nanoparticles
  • Groundwater remediation by nanoparticles has become a major interest in recent years. This report presents the ability of hexavalent chromium removal in aqueous using iron (Fe0) nanoparticles. Cr(VI) is a major pollution of groundwater and more toxic than Cr(III). Fe0 reduces Cr(VI), transforming Cr(VI) to nontoxic Cr(III). At a dose of 0.2g/l iron (Feo) nanoparticles, 100% of Cr(VI) 5mg/l was removed after only 20 minutes. The Cr(VI) removal efficiency increased with decreasing initial pH.

    pdf5p tuanlocmuido 13-12-2012 20 3   Download

  • The synthesis and characterization of chitosan (CS) nanoparticles used as drug carrier was reported. The formation of nanoparticles, taking place in an aqueous phase without using auxiliary toxic substances via the ionic interaction between NH3 + protonated group of CS and phosphate group of sodium tripolyphosphate (TPP) was monitored in situ by combined UV-vis and pH measurements. The synthesized nanoparticles were characterized by TGA/DTA, XRD and TEM. The particle size, estimated by TEM, was found around 50 - 70 nm, with a quite uniform size distribution.

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  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Assessment of the In Vivo Toxicity of Gold Nanoparticles

    pdf7p dauphong17 21-02-2012 21 3   Download

  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Toxicity of CdSe Nanoparticles in Caco-2 Cell Cultures

    pdf15p toshiba25 08-12-2011 26 2   Download

  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Beyond platinum: synthesis, characterization, and in vitro toxicity of Cu(II)-releasing polymer nanoparticles for potential use as a drug delivery vector

    pdf10p dauphong12 08-02-2012 24 2   Download

  • Several effects have already been shown in animals. Among these, toxic effects have been identified in several organs (heart, lungs, kidneys, reproductive system…), as well as genotoxicity and cytotoxicity. For example, some particles cause granulomas, fibrosis and tumoural reactions in the lungs. Thus, titanium dioxide, a substance recognized as having low toxicity, shows high pulmonary toxicity on the nano-scale in some studies and no or almost no effects in other studies.

    pdf26p quynho77 10-11-2012 17 1   Download

  • Analyzing the scientific literature via the approaches commonly used for this type of research in different databases by the IRSST Informathèque and the CSST documentation centre identified peer-reviewed journal articles on nanoparticle toxicity. The literature is covered exhaustively up to summer 2007. Among the main databases and search engines consulted, we should mention MedLine, Toxline, PubMed, Inspec, Coppernic, Embase, Ntis, Ei, Compendex, SciSearch, Pascal, Alerts, Teoma and Scirus.

    pdf125p quynho77 10-11-2012 76 0   Download

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