Talk:Uranium trioxide

message: In Carter, R.F. and K. Stewart (1970) "On the oxide fume formed by the combustion of plutonium and uranium" Inhaled Particles 2:819-38 () in particular, section (f) on page 836 indicates that about half of burning uranium goes into a gaseous vapor fume, instead of the aerosol particulates which have thus far been the only portion measured by those responsible for insuring depleted uranium munitions safety.  Volatility of uranium trioxide (a/k/a uranyl oxide) gas can be plotted from Alexander (2005) and Ackermann et al. (1956), resulting in a very large DOF-adjusted R^2 corresponding to the 95% confidence interval shown. For the burning temperature of the shower-of-sparks which is the result of DU munitions use on hard targets, please see Mouradian and Baker (1963), and in particular figures 4 and 6 on page 392.
Would someone include the relevant portions of that, please?  James S. 15:45, 24 January 2007 (UTC)
replies: text: Mmmmm.. no, I dont think anyone will. Torturous Devastating Cudgel 20:04, 1 February 2007 (UTC)
thread_title:  Gas phase 

message: ; Particulate Depleted Uranium Is Cytotoxic and Clastogenic to Human Lung Cells : Depleted uranium (DU) is commonly used in military armor and munitions, and thus, exposure of soldiers and non-combatants is potentially frequent and widespread. DU is considered a suspected human carcinogen, affecting the bronchial cells of the lung. However, few investigations have studied DU in human bronchial cells. Accordingly, we determined the cytotoxicity and clastogenicity of both particulate (water-insoluble) and soluble DU in human bronchial fibroblasts (WTHBF-6 cells). We used uranium trioxide (UO3) and uranyl acetate (UA) as prototypical particulate and soluble DU salts, respectively. After a 24 h exposure, both UO3 and UA induced concentration-dependent cytotoxicity in WTHBF-6 cells. Specifically, 0.1, 0.5, 1, and 5 μg/cm2 UO3 induced 99, 57, 32, and 1% relative survival, respectively. Similarly, 100, 200, 400, and 800 M UA induced 98, 92, 70, and 56% relative survival, respectively. When treated with chronic exposure, up to 72 h, of either UO3 or UA, there was an increased degree of cytotoxicity. We assessed the clastogenicity of these compounds and found that at concentrations of 0, 0.5, 1, and 5 μg/cm2 UO3, 5, 6, 10, and 15% of metaphase cells exhibit some form of chromosome damage. UA did not induce chromosome damage above background levels. There were slight increases in chromosome damage induced when we extended the UO3 treatment time to 48 or 72 h, but no meaningful increase in chromosome damage was observed with chronic exposure to UA.
--James S. → talk 19:42, 20 June 2007 (UTC)
thread_title:  Cytotoxic and Clastogenic 

message: Depleted uranium is mentioned in the titles of three of the references, yet this substance is not mentioned even once in the actual text of the article. Why is this? Badagnani (talk) 08:19, 31 July 2008 (UTC)
thread_title:  References 

message: I did a search at random about this topic, and found the article In vitro chemical and cellular tests applied to uranium trioxide with different hydration states from the journal Environmental Health Perspectives. I don't see it in the list of references supplied with the article, and I haven't read it to ascertain its value. (Moreover, I'm not familiar with the journal, so I can't assess its value either.) I just thought I'd post this in the event there's something useful to be gleaned from it. Mindmatrix 18:22, 9 November 2008 (UTC)
thread_title: Possible ref

message: Based on electron densities, isn't this rendering more accurate than the ball-and-stick model in the article now? 99.191.75.124 (talk) 08:10, 28 February 2010 (UTC)
replies: text: That image implies that electron density is quasi-spherical and more delocalized on oxygens, which doesn't seem correct. Materialscientist (talk) 09:15, 11 March 2010 (UTC)
thread_title:  Geometry 

message: We see formulae like  and  being thrown around here (presumably in analogy to Cr), despite the fact that the uranate article notes that no actual uranium oxyanions are known and that all uranates are ternary oxides. Double sharp (talk) 08:29, 6 July 2017 (UTC)
thread_title:  Amphoterism to form uranates