The world's first wiki where authorship really matters (Nature Genetics, 2008). Due credit and reputation for authors. Imagine a global collaborative knowledge base for original thoughts. Search thousands of articles and collaborate with scientists around the globe.

wikigene or wiki gene protein drug chemical gene disease author authorship tracking collaborative publishing evolutionary knowledge reputation system wiki2.0 global collaboration genes proteins drugs chemicals diseases compound
Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

Editor

Share

Personal info

View

Links

About

Terms

 

 
 

Determination of porphyrins in urine by direct injection on a liquid chromatographic column coated with tributylphosphate.

To separate and quantify urinary porphyrins, acidified and centrifuged urine was injected on a reversed-phase high-performance liquid chromatographic column, LiChrosorb RP-18, coated with tributylphosphate. A linear pH gradient from pH 4.40 to pH 6.50 was applied in the eluent using phosphate buffers containing methanol (9:1). The method permits detection of uro- and coproporphyrin down to concentrations normally present in urine and also selective determination of the hepta-, hexa- and pentacarboxylic porphyrins present in urine from patients suffering from porphyria cutanea tarda.[1]

References

  1. Determination of porphyrins in urine by direct injection on a liquid chromatographic column coated with tributylphosphate. Johansson, I.M., Niklasson, F.A. J. Chromatogr. (1983) [Pubmed]
Annotations and hyperlinks in this abstract are from individual authors of WikiGenes or automatically generated by the WikiGenes Data Mining Engine. The abstract is from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.About WikiGenesOpen Access LicencePrivacy PolicyTerms of Useapsburg
 
WikiGenes - Universities