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author:

黄端华 (黄端华.) [1] | 张兰 (张兰.) [2] (Scholars:张兰)

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Abstract:

采用毛细管区带电泳法(CZE)测定瑞香苷(DN)、瑞香素(DP)和7-羟基香豆素(7-HC)的离解常数(pKa).通过测试不同酸度条件下各香豆素的迁移时间,以香豆素在电泳中有效淌度和运行液中OH-浓度的关系,推导了毛细管区带电泳-紫外分光光度( CZE-UV)法测定3种香豆素离解常数( pKa)的线性模型,并建立了这3种香豆素的pKa测定方法.测得3种香豆素的pKa值分别是7.43(7-HC)、6.91(DN)和6.86(DP).同时也采用传统方法-紫外分光光度法对这些物质的pKa进行测定以验证CZE的可靠性,两种测定结果相一致,说明CZE-UV法用于3种香豆素的离解常数的测定,快速、简便、结果可靠.

Keyword:

7-羟基香豆素 毛细管区带电泳 瑞香素 瑞香苷 离解常数

Community:

  • [ 1 ] [黄端华]福建船政交通职业学院
  • [ 2 ] [张兰]福州大学

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Source :

分析测试技术与仪器

ISSN: 1006-3757

CN: 62-1123/O6

Year: 2016

Issue: 1

Volume: 22

Page: 9-14

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count: -1

Chinese Cited Count:

30 Days PV: 2

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