Abstract In this study, we investigated the partition property of pyrene onto cell membrane using synthetic membrane vesicles consisted of several phospholipids and the effect of natural organic matters (NOM) on the partition. Membrane fluidity and membrane phase affected partition coefficient (P mw ) of pyrene onto the membrane. P mw was larger for the liposome in liquid crystalline phase > in ripple phase > in gel phase. Pyrene did not undergo the steric interfere in partition onto the membrane used in this study. Negative charge of the membrane did not affect P mw of pyrene. Suwannee River Natural Organic Matter (NOM) and Nordic fulvic acid affected the partition of pyrene onto the TRANSIL® membrane. The reason was confirmed that NOM associated pyrene did not partition onto the membrane. Low molecular weigh fraction of SRNOM had strong effect on the partition as much as high molecular weigh fraction. From calorimetrical analysis, it was found that SRNOM did not affect the fluidity of the dimyristoylphosphatidylcholine (DMPC) membrane.


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    Title :

    Partition property of pyrene onto synthetic membrane vesicles and the effects of natural organic matters


    Contributors:

    Published in:

    Publication date :

    2008-03-01


    Size :

    7 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




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