3.
    发明专利
    未知

    公开(公告)号:NO331987B1

    公开(公告)日:2012-05-21

    申请号:NO20092378

    申请日:2009-06-22

    Applicant: STATOIL ASA

    Abstract: A method for isolation and quantification of naphthenate forming acids (ARN-acids) in crude oils is disclosed. The method involves selective absorbtion/adsorption of ARN acids by a solid medium. Isolation of the solid medium and transferring the ARN acids to an organic solvent which can by analysed for its ARN acid content.

    4.
    发明专利
    未知

    公开(公告)号:NO20092378L

    公开(公告)日:2010-12-23

    申请号:NO20092378

    申请日:2009-06-22

    Applicant: STATOIL ASA

    Abstract: A method for isolation and quantification of naphthenate forming acids (ARN-acids) in crude oils is disclosed. The method involves selective absorbtion/adsorption of ARN acids by a solid medium. Isolation of the solid medium and transferring the ARN acids to an organic solvent which can by analysed for its ARN acid content.

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