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Samenvatting UPLC voorbereiding Practicum: fysicochemie, analyse en kwaliteit van geneesmiddelen

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Dit document omvat alle te kennen leerstof van het practicum 'UPLC' dat plaatsvind tijdens Practicum: fysicochemie, analyse en kwaliteit van geneesmiddelen. Deze leerstof kan ondervraagd worden tijdens de uitvoering van de proef.

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Uploaded on
October 30, 2025
Number of pages
4
Written in
2024/2025
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Summary

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HPLC: kwantitatieve bepaling propylparabeen in een
onbekende oplossing via vloeistofchromatografie




H
PLC = high performance liquid chromatography
=> vloeistofchromatografie
=> maakt gebruik van hoge drukken, leidt tot betere scheiding
!! maak GEEN gebruik van interne standaard, want UPLC toestel kan zeer
nauwkeurig volumes
injecteren => werk met piek oppervlakte in concentratiebepaling
Proef => reversed phase
• Mobiele fase:
– vloeistof (Bv mengsel methanol en water)
– Meer polair dan de stationaire fase
• Stationaire fase:
– Apolaire stof op silicadrager
– C8 kolom
– C18 kolom
– Phenyl of cyanogroepen
• Specifiek voor scheiding oplosbare componenten: 2 principes:
– verschil in oplosbaarheid en/of (= NIET verschil in vluchtigheid 
gaschromatografie)
!! stof die beter oplosbaar is = minder neiging om te interaggeren met
stationaire fase
en meer in mobiele fase voorkomen; stof die slecht oplosbaar is zal
liever niet in
mobiele fase zitten en wel veel interaggeren met stationaire fase => zal
langer op
kolom blijven
– verschil in affiniteit voor de stationaire fase (bv polariteit)
!! polaire stof zal meer interactie tonen met polair stationaire fase
en trage elutie
vertonen
• Detector: UV/VIS detector
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