Suppr超能文献

分子印迹聚合物固相萃取柱净化后用高效液相色谱-荧光检测器法测定人尿中赭曲霉毒素A

[Determination of ochratoxin A in human urine by HPLC-FLD after cleaned-up by molecularly imprinted polymer solid phase extraction column].

作者信息

Xie Li-Wei, Zhao Xiang-Sheng, Kong Wei-Jun, Wang Yu-Ting, Hu Yi-Chen, Ou-Yang Zhen, Yang Mei-Hua

出版信息

Yao Xue Xue Bao. 2014 Apr;49(4):517-23.

Abstract

A method was developed for the determination of ochratoxin A (OTA) in human urine by HPLC-FLD after molecularly imprinted polymer solid phase extraction (MIP-SPE) column. After the pH being adjusted to 2.5 with 0.1 mol x L(-1) HC1, sample was cleaned up with MIP-SPE column for ochratoxin A, the analyte was analyzed by high performance liquid chromatography coupled with fluorescence detection (HPLC-FLD), and finally all the positive results were confirmed by LC-MS/MS. Recoveries from urine samples spiked with OTA at levels ranging from 2 to 20 ng x mL(-1) were 90.6%-101.9%, and RSDs were 0.1%-1.6%. Sixty-five volunteers living in Beijing took part in the study, of which 5 were found containing OTA in their urine and the highest value was 0.091 ng x mL(-1). The MIP-SPE column was firstly applied to purify and concentrate OTA in human urine, this method is simple, rapid and reliable and can be used to determine the contents of OTA in human urine.

摘要

建立了一种采用分子印迹聚合物固相萃取(MIP-SPE)柱净化,高效液相色谱-荧光检测法(HPLC-FLD)测定人尿中赭曲霉毒素A(OTA)的方法。用0.1 mol·L⁻¹盐酸将尿液pH调至2.5后,通过OTA分子印迹固相萃取柱对样品进行净化,采用高效液相色谱-荧光检测法对分析物进行分析,最后所有阳性结果均通过液相色谱-串联质谱(LC-MS/MS)进行确证。在添加水平为220 ng·mL⁻¹的OTA尿样中的回收率为90.6%101.9%,相对标准偏差为0.1%~1.6%。65名居住在北京的志愿者参与了该研究,其中5人尿液中检测到OTA,最高值为0.091 ng·mL⁻¹。首次将分子印迹固相萃取柱应用于人尿中OTA的净化和富集,该方法简便、快速、可靠,可用于测定人尿中OTA的含量。

文献AI研究员

20分钟写一篇综述,助力文献阅读效率提升50倍。

立即体验

用中文搜PubMed

大模型驱动的PubMed中文搜索引擎

马上搜索

文档翻译

学术文献翻译模型,支持多种主流文档格式。

立即体验