GB/T 23325-2009 "Spinning & weaving products, determination of surfactants, linear alkylbenzene sulfonates" standard specifies a method for the determination of linear alkylbenzene sulfonates in Spinning & weaving products. This standard is suitable for evaluating the content of this surfactant in Spinning & weaving products. High performance liquid chroma-tography, HPLC (HPLC) is used to accurately determine the concentration of linear alkylbenzene sulfonates. Linear alkylbenzene sulfonates are common surfactants and are widely used in processes such as dyeing, finishing and waterproofing during the treatment of Spinning & weaving products. By determining its content, it is possible to evaluate the potential impact of Spinning & weaving products on the environment and human body during production and use, ensuring the mass and safety of the product.