Page 44 - 理化检验-化学分册 2021年第六期
P. 44

卜 芃, 等: 库仑滴定法测定己内酰胺与聚醚样品中过氧化物的含量


       2016 , 28 ( 2 ): 401G406.                     [ 9 ]   薛婷 . 库仑滴定法间接测定补锌片中锌[ J ] . 理化检验 G
   [ 7 ]   李小梅, 付亚康, 梁大伟 . 非水库仑滴定法测定锂电池                   化学分册, 2019 , 55 ( 8 ): 941G944.
        电解 液 中 游 离 酸 的 含 量 [ J ] . 理 化 检 验 G 化 学 分 册,  [ 10 ]   薛斌, 蒙红平, 陈浩斌 . 库仑滴定法测定燃料电池中质
       2020 , 56 ( 1 ): 97G99.                             子交换膜的 离 子 交 换 当 量 [ J ] . 理 化 检 验 G 化 学 分 册,
   [ 8 ]   谷雪贤 . 库仑滴定法测定羧甲基壳聚糖的含量[ J ] . 理化               2019 , 55 ( 5 ): 571G573.
        检验 G 化学分册, 2019 , 55 ( 9 ): 1073G1075.




                 DeterminationofPeroxideinCa p rolactamandPol y ether

                               Sam p lesb yCoulometricTitration

                                               1
                                                ,
                                        BUPen g LIHon g lian g 2
                             ( 1. Hu′nanPoliceAcadem y , Chan g sha410138 , China ;
          2. Schoolo fChemistr yandChemicalEn g ineerin g , CentralSouthUniversit y , Chan g sha410012 , China )
           Abstract : Coulometrictitration wasestablishedtodeterminethecontentofp eroxideinca p rolactam and
       p ol y ethersam p les.Platinum electrode was served as workin g electrode p airs andindicatin g electrode p airs
                               -1                                                            4+
       res p ectivel y , and1.00 mol    L  ofceriumchloridesolutionassu pp ortin gelectrol y tewaselectrol y zedtog etCe
       with1.0mAofcurrent.Thentheredoxreactionoccurredq uantitativel ywithp eroxideinthesam p lesolution , and
       thecontentof p eroxideinthesam p lewascalculatedaccordin g toFarada y ′slawofelectrol y sis.Theresultsshowed
                                                                                             -1
                                                            -1
       thatthelinearit y ran g eofstandardcurvewas24.11-301.35 m g    L , withdetectionlimit ( 3s ) of7.2 μ g    g .
       Actualsam p les wereanal y zed , andthere wasnosi g nificantdifferencebetweenthis methodandp otentiometric
       titration.RSDs ( n=5 ) ofthedeterminedvalueswerelessthan3.0%.
           Ke y words : coulometrictitration ; p eroxide ; ca p rolactam ; p ol y ether ; ceriumchloride










































       5 1 0   
   39   40   41   42   43   44   45   46   47   48   49