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    Accuracy profile理论在高效液相色谱法测定纺织品中3种有机溶剂残留中的应用

    Application of Accuracy Profile Theory in HPLC Determination of 3 Organic Solvent Residues in Textiles

    • 摘要: 样品经超纯水机械振荡萃取,提取液在Spursil C18色谱柱上分离,以甲醇-水-乙腈(25+70+5)混合液为流动相进行洗脱,检测波长为200 nm。N,N-二甲基甲酰胺、N,N-二甲基乙酰胺和N-甲基吡咯烷酮的质量浓度在0.5~10 mg·L-1内与峰面积呈线性关系,检出限(3S/N)为1.1~2.8 mg·kg-1,测定下限(10S/N)为3.7~9.3 mg·kg-1。采用Accuracy profile理论验证方法的准确性,并评估了测定的不确定度,说明方法可满足3种有机溶剂的日常检测要求。

       

      Abstract: After the sample was extracted by mechanical oscillation with ultrapure water, the extract was separated on a Spursil C18 chromatographic column with a mixture of methanol, water and acetonitrile (25+70+5) as mobile phase for elution. The detection wavelength was 200 nm. Linear relationships were found between the peak areas with the mass concentrations of N,N-dimethylformamide, N,N-dimethylacetamide and N-methyl-2-pyrrolidone in the range of 0.5-10 mg·L-1, with detection limits (3S/N) in the range of 1.1-2.8 mg·kg-1, and the lower limits of determination (10S/N) in the range of 3.7-9.3 mg·kg-1. The method accuracy was validated according to the Accuracy profile theory, and the measurement uncertainty was evaluated. Results showed that the method could meet the daily detection requirements of the 3 organic solvents.

       

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