Uranyl formate

Uranyl formate

Uranyl formate (UO2(CHO2)2.H2O is a yellow free-flowing fine light-yellow powder.

It is occasionally used as a 0.5% or 1% acqueous negative stain in transmission electron microscopy (TEM) because it shows a finer grain structure than uranyl acetate. Uranyl formate does not easily go into solution, and once dissolved, has a rather limited lifetime as a stain, especially since it is quite sensitive to light, especially UV and will precipitate if exposed.

External links

* [http://chemistry.allinfoabout.com/periodic/u.html Uranium Facts]
* [http://www.2spi.com/catalog/chem/Uranyl_Formate.shtml Uranyl formate is the optimum negative stain for some TEM staining protocols]
* [http://www.biologicalprocedures.com/bpo/arts/1/70/m70.htm Uranyl formate usage in TEM]


Wikimedia Foundation. 2010.

Игры ⚽ Поможем написать курсовую

Look at other dictionaries:

  • Uranium — (pronEng|jʊˈreɪniəm) is a silvery gray metallic chemical element in the actinide series of the periodic table that has the symbol U and atomic number 92. It has 92 protons and 92 electrons, 6 of them valence electrons. It can have between 141 and …   Wikipedia

  • Negative stain — Electron micrograph of (organic) plant tissue without (top) and with OsO4 staining Negative staining is an established method, often used in diagnostic microscopy, for contrasting a thin specimen with an optically opaque fluid. For bright field… …   Wikipedia

  • Electron microscope — Diagram of a transmission electron microscope A 197 …   Wikipedia

  • Ion — Cation and Anion redirect here. For the particle physics/quantum computing concept, see Anyon. For other uses, see Ion (disambiguation). Hydrogen atom (center) contains a single proton and a single electron. Removal of the electron gives a cation …   Wikipedia

  • Microbial metabolism — is the means by which a microbe obtains the energy and nutrients (e.g. carbon) it needs to live and reproduce. Microbes use many different types of metabolic strategies and species can often be differentiated from each other based on metabolic… …   Wikipedia

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”