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Summary

Samenvatting analyse van complexe matrices

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Samenvatting van eiwitprecipitatietechnieken, extractie van oplossingen en vaste monsters en technieken voor monsterbewerking. In enkele tabellen een volledig overzicht van de leerstof

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trichloorazijnzuur w uit het staal
trichloorazijnzuur /
verwijderd door extractie met
perchloorzuur/ wolfraamzuur
diethylether


werken best indien temp.
precipitaties in zuur midden
verlaagd wordt.


Zuren neutraliseren positieve
ladingen waardoor de
eiwitmoleculen kunnen agregeren
en neerslaan
eiwitprecipitatie-technieken




aceton / methanol/ ethanol/
acetonitrile


precipitaties met een organisch solvatielaag rond proteinen
solvent afbreken omdat watermoleculen
vervangen worden door
organische moleculen die minder
efficient zijn in de bescherming
tegen precipatie



ammonium sulfaat



solvatatielaag wordt
samengedrukt en de proteinen
kunnen dichter bij elkaar komen.
Watermoleculen zijn minder
beschikbaar om hydratatielaag te
vormen en bescherming te bieden
precipitaties met een anorganisch tegen precipitatie
solvent
toevoegen van zouten om
oplosbaarheid te verminderen :
uitzouten


metaalionen zoals koper of zink:
vormen weinig oplosbare zouten.
MAAR kunnen ook complexeren
met het analiet en hierdoor
problemen opleveren bij de
analyse

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Uploaded on
May 13, 2016
Number of pages
5
Written in
2013/2014
Type
SUMMARY

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