摘要
目的:建立一种用高效液相色谱测定微量高半胱氨酸的新方法?方法:反应条件研究采用分子荧光光谱法,高半胱氨酸测定采用反相高效液相色谱法?结果:使用邻苯二甲醛作荧光衍生试剂,在温度为50℃,pH8.4,反应4min时,衍生物相对荧光强度最大?在5×10-9~2.7×10-7mol·L-1浓度范围内,荧光强度与浓度之间呈线性关系,检测限为4.2×10-10mol·L-1?结论:经过氧化氢处理后,HCY与OPA的衍生物荧光强度可提高5倍?
Abstract
OBJECTIVE:To establish a sesitive method to determine homocysteine by a reversed-phase high-performance liquid chromatography (RP-HPLC).METHODS:Homocysteine was determined by RP-HPLC with Fluorescence spectrophotometry.RESULTS:Ophthaladehyde was used as fluorescent derivative reagent.When the reaction took place at 50℃ and pH8.4 for 4 min,the fluorescent intensity reached the highest.In the concentraction of 5×10-9~2.7×10-7mol·L-1,F%=6.52×109c-0.91,r=0.998,RSD=2.24%,detection limit=4.2×10-10mol·L-1.CONCLUSION:Treated with H2O2,the fluorescent intensity of ophthalaldehyde derivatives of HCY may increase by 5 times.
关键词
高半胱氨酸 /
高效液相色谱
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Key words
homocyteine /
HPLC /
cardiovascular disease
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揭新明;王媚.
一种提高高半胱氨酸液相色谱检测灵敏度的方法[J]. 中国药学杂志, 1999, 34(05): 324-326
Jie Xinming.
A sensitive method for the determination of homocysteine by HPLC[J]. Chinese Pharmaceutical Journal, 1999, 34(05): 324-326
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参考文献
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脚注
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