General MRM conditions were developed for any FA, which facilitated the quantification and extended the application of the method. The FA quantification strategy based on HPLC-MRM was carried out using deuterated derivatization reagents. "Heavy" derivatization reagents were used as internal standards (...
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我跑的是药物代谢后,大鼠的尿样分析,液质联用,用的是文献上的方法,还在摸索阶段,整个45min一针。 按照文献上开了6个MRM的通道,大多数出峰没有干扰,样品出峰集中在前25min,但是跑到35min的时候,大多数通道出现了一个鼓包状的峰,并且有点宽,想问下这个可能是杂质干扰么?我的6个MRM分子量之间还是差的比较远的...
液相为waters 2695,质谱为三重四级杆,采用MRM模式,有两个通道分别采用ES+和ES-,空白样品(甲醇:水=1:1,V/V)走样后,ES+通道基线正常如下图,ES-通道走样为0,不理解,求大神们解释。 基线.JPG 质谱方法.JPG
by using liquid chromatography coupled with electrospray ionization tandem triple quadrupole mass spectrometry (HPLC-ESI-TQ-MS/MS) in multiple-reaction monitoring (MRM) mode. Ideal separation of 16 target compounds was achieved on Xbridge Amide HILIC column (4.6 × 150 mm, 3.5 μm) with gradient...
牛奶QuEChERSIDA-EPI喹诺酮建立快速,稳健的测定牛奶中喹诺酮类药物残留的方法.牛奶样品经酸化乙腈提取,QuEChERS方法进行净化处理,经氮吹浓缩后进行样品分析.被测化合物经C_(18)色谱柱分离后,采用多反应检测(MRM)-信息依赖采集(IDA)-增强子离子扫描(EPI)模式采集数据,对比谱库定性分析,外标法定量分析.结果表明,在...
HPLC-MRM relative quantifica- tion analysis of fatty acids based on a novel derivatization strategy. Analyst 139, 6154-6159.Cai T, Ting H, Xin-Xiang Z, Jiang Z, Jin-Lan Z (2014) HPLC- MRM relative quantification analysis of fatty acids based on a novel derivatization strategy. Analyst 139...
High performance liquid chromatography coupled with triple quadrupole mass spectrometer (HPLC鈥揗S/MS) was used to analyze the human urine after oral administration of stanozolol. Multiple reaction monitoring (MRM), one of the scan modes of triple quadrupole mass spectrometer showing extremely high ...
A Fast and Robust UHPLC-MRM-MS Method to Characterize and Quantify Grape Skin Tannins after Chemical Depolymerization. Molecules 2016, 21, 1409.Pinasseau, L.; Verbaere, A.; Roques, M.; Meudec, E.; Vallverdu-...
(2012). HPLC-chip-multiple reaction monitoring (MRM) method for the label-free absolute quantification of c - conglutin in lupin: Proteotypic peptides and standard addition method. Food Chemistry, 131(1), 126-133.Resta, D., Brambilla, F., & Arnoldi, A. (2012). HPLC-chip-multiple ...