QuEChERS 分散固相萃取试剂盒
第2 步：分散固相萃取的净化
根据所分析的食品类型和所使用的方法，选择分散固相萃取试剂盒。此步骤中，第一步中
萃取的样品等量加入2 mL 或15 mL 离心管中。离心管中含有少量的固相萃取吸附剂和
MgSO4。吸附剂将去除样品中的干扰物质，MgSO4 将去除多余的水分并提高样品分布。供
选择的试剂盒现均提供陶瓷均质子（每个离心管2 个）。其部件号中含“CH”。

QuEChERS 分散固相萃取试剂盒
                                                           AOAC 2007.01方法        欧盟方法EN 15662

 试剂盒                  规格                单位         单位试剂盒组成部件号        试剂盒组成部件号
一般水果和蔬菜：         2 mL               100/包         50 mg PSA                 25 mg PSA
 去除极性有机酸、部分糖和脂类
 
                                                            150 mg MgSO4                150 mg MgSO4
                                                            5982-5022                    5982-502
                                                           5982-5022CH                 5982-5021CH

 
     
                                  15 mL               50/包         400 mg PSA                150 mg PSA
   
                                                           1200 mg MgSO4              900 mg MgSO4
                                                             5982-5058                 5982-5056
                                                             5982-5058CH               5982-5056CH
 
含脂和蜡的水果和蔬菜：     2 mL               100/包         50 mg PSA                                                 25 mg PSA                                                      
去除极性有机酸、某些                                         50 mg C18EC              25 mg C18EC
 糖类，多数脂类和固醇类                                       150 mg MgSO4             150 mg MgSO4
250 mg PSA                                                   5982-5122                5982-5121
                                                              5982-5122CH              5982-5121CH

                             15 mL           50/包           400 mg PSA                150 mg PSA
                                                              400 mg C18EC             150 mg C18EC
                                                              1200 mg MgSO4             900 mg MgSO4
                                                               5982-5158                5982-5156
                                                              5982-5158CH              5982-5156CH
含色素的水果和蔬菜：         2 mL            100/包           50 mg PSA                 25 mg PSA
去除极性有机酸、某些                                          50 mg GCB                 2.5 mg GCB
糖类和脂类、以及类胡                                          150 mg MgSO4              150 mg MgSO4
萝卜素和叶绿素；不能                                           5982-5222                 5982-5221
 用于平面结构的农药残                                           5982-5222CH               5982-5221CH
 留测定
                             15 mL            50/包            400 mg PSA               150 mg PSA
                                                                400mg GCB                 15mgGCB
                                                                1200 mg MgSO4           900 mg MgSO4
                                                                 5982-5258                                   5982-5256
                                                                                                   5982-5258CH             5982-5256CH