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    GB/T 23974-2009
    Determination of the content of ortho-phenylphenol in dye products

    GB/T 23974-2009 "Determination of o-Phenylphenol in Dye Products" specifies the method for determining the content of o-phenylphenol in dye products, applicable to the testing of various types of dye products. The principle involves extracting and purifying the sample, followed by separation and detection using high-performance liquid chromatography (equipped with an ultraviolet detector), with quantification performed by the external standard method. The detection requires instruments such as an ODS chromatographic column, ultrasonic extractor, nitrogen evaporator, and analytical balance, providing an accurate testing method for the safety and quality control of dye products.

    This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.
    Status Active
    CCS G55 ICS 71.100.01;87.060.10
    Release Date 2009-06-02 00:00:00 Implementation Date 2010-02-01 00:00:00

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