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Issue:
A parallel catalytic wave of folic acid and its analytical application
Author(s):
ZHAO Jing-jin
,
HAN Tian-tian
,
HUANG Bing
,
LUO Deng-bai
Pages:
44
-
46
Year:
2007
Issue:
6
Journal:
CHINESE JOURNAL OF ANALYSIS LABORATORY
Keyword:
叶酸
;
过硫酸钾
;
平行催化波
;
单扫描极谱法
;
Abstract:
在Britton-Robinson(pH 4.1)的缓冲溶液中叶酸于-0.56 V(vs.SCE)产生一还原波,该波能被氧化剂过硫酸钾催化形成平行催化波.催化波峰电位不变,峰电流增加10倍,二阶导数波波高与叶酸的浓度在5.0×10-9~3.5×10-7 mol/L范围内呈线性关系(r=0.999),检出限可达3.0×10-9mol/L.方法简便灵敏,运用该法测定了叶酸片剂中的叶酸.
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