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固相萃取-高效液相色谱/串联质谱法测定大鼠血浆中二十二碳六烯酸

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Indexed by:期刊论文

Date of Publication:2015-02-20

Journal:分析科学学报

Included Journals:PKU、ISTIC、CSCD

Volume:31

Issue:1

Page Number:47-50

ISSN No.:1006-6144

Key Words:固相萃取;高效液相色谱-串联质谱;二十二碳六烯酸;大鼠血浆

Abstract:建立了固相萃取-高效液相色谱/串联质谱(SPE-HPLC-MS/MS)测定大鼠血浆中二十二碳六烯酸(DHA)的分析方法.血浆样品经C18固相萃取(SPE)小柱净化后,采用Thermo C18色谱柱分离,以0.2%甲酸水溶液和乙腈为流动相,等度洗脱,在电喷雾离子源负离子模式下,采用质谱选择反应监测(SRM)模式检测,外标法定量.结果表明:DHA在0.10~60.0μg/mL范围内具有良好的线性关系(r2=0.9990);检出限(S/N=3)为0.04 μg/mL,定量限(S/N=10)为0.10 μg/mL;在2、10、30 g/mL 3个添加水平下,其平均回收率为94.0%~106.9%,方法的相对标准偏差(RSD)在2.15%~3.12%之间.该方法简单、快速,准确度、灵敏度高,适用于大鼠血浆中DHA的分析检测.

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