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第45卷第12期       段名秀,张代为,彭梦凡,等. 液液萃取联合葡聚糖凝胶LH⁃20分离制备香烟烟雾中的5⁃羟甲基⁃2⁃
                 2025年12月                 糠醛[J]. 南京医科大学学报(自然科学版),2025,45(12):1727-1737                  ·1731 ·


                                  A
                                     (mV)  1 000                             Aqueous phase

                                     Voltage  500


                                         0
                                         4.0     5.0    6.0     7.0    8.0    9.0    10.0
                                                                 Time(min)
                                  B
                                     (mV)  1 000                            Chloroform phase

                                     Voltage  500


                                         0
                                         4.0     5.0    6.0     7.0    8.0    9.0    10.0
                                                                 Time(min)
                                  C
                                     (mV)  1 000                             Aqueous phase

                                     Voltage  500


                                         0
                                         4.0     5.0    6.0     7.0    8.0    9.0    10.0
                                                                 Time(min)
                                  D
                                     (mV)  1 000                            Chloroform phase

                                     Voltage  500


                                         0
                                         4.0     5.0    6.0     7.0    8.0    9.0    10.0
                                                                 Time(min)
                   A:Chromatogram of the aqueous phase after single liquid⁃liquid extraction. B:Chromatogram of the chloroform phase after single liquid⁃liquid
                extraction. C:Chromatogram of the aqueous phase after double liquid⁃liquid extraction. D:Chromatogram of the chloroform phase after double liquid⁃
                liquid extraction.
                                                图3 5⁃HMF标准品液液萃取后的色谱图
                                    Figure 3 Chromatogram of standard 5⁃HMF after liquid⁃liquid extraction


                                       表2 液液萃取后水相和三氯甲烷中5⁃HMF的峰面积比较(n=3)
                    Table 2 Comparison of peak areas of 5⁃HMF in aqueous and chloroform phases after liquid⁃liquid extraction(n=3)
                                                              6
                                                                                         6
                       Extraction method     Average peak area(×10 ,x ± s)  Peak area 95% CI(×10 )  Proportion(%,x ± s)
                  Single liquid⁃liquid extraction
                    Aqueous phase                   11.61 ± 0.28            10.75-12.47           75.05 ± 1.81
                    Chloroform phase                03.86 ± 0.32             2.89-4.84            24.95 ± 2.07
                  Double liquid⁃liquid extraction
                    Aqueous phase                   13.87 ± 0.40            12.65-15.09           93.43 ± 2.70
                    Chloroform phase                00.96 ± 0.04             0.85-1.07            06.44 ± 0.24

                检测,检测结果与第1包香烟结果相似。3次独立分                           9~14 管合并为 5⁃HMF 段。根据峰面积计算纳入
                离实验的检测数据显示,5⁃HMF洗脱分布规律高度                          5⁃HMF 段的比例为:(T9+T10+T11+T12+T13+T14)/
                一致,均主要集中于第 9~14 管(图 5,表 4),故将第                   (T8+T9+T10+T11+T12+T13+T14+T15+T16)×100%=
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