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