蔺大伟, 郑佳佳, 李秀云, 邵凯, 夏庆兵, 孙红雷, 李文海. 超高效液相色谱-四极杆/静电场轨道阱高分辨质谱法检测血液中的痕量溴敌隆[J].刑事技术, 2020,45(3):266-269
LIN Dawei, ZHENG Jiajia, LI Xiuyun, SHAO Kai, XIA Qingbing, SUN Honglei, LI Wenhai. Detection of Trace Bromadiolone in Blood by UPLC-HRMS[J]. Forensic Science and Technology,2020,45(3): 266-269
Detection of Trace Bromadiolone in Blood by UPLC-HRMS
LIN Dawei, ZHENG Jiajia, LI Xiuyun, SHAO Kai, XIA Qingbing, SUN Honglei, LI Wenhai
Institute of Criminal Science and Technology of Criminal Police Detachment of Taian Public Security Bureau, Taian 271000, Shandong, China
Abstract
Objective To establish a method of ultra-performance liquid chromatography-high resolution mass spectrometry (UPLC-HRMS) for quick determination of trace bromadiolone in blood.Methods With 1mL acetonitrile, the sampling blood was extracted and precipitated of protein, afterwards being purified with membrane filtration. The purified sample was injected into a Waters ACQUITY UPLC HSS T3 capillary column (2.1×50mm×1.8μm) that was eluted with the gradient-running mobile phase of 0.1% formic-water (v/v) and methanol. The resultant data were qualitatively compared against the bromadiolone of its accurate mass, isotopic compatibility, fragmentation information and retaining time, with the full scan external standard curve handling for quantitative research.Results The detected bromadiolone had an effective internal correlation (R2=0.9974), with its average recovery being 73.6%~87.3% and RSD 2.17%~5.69% (n=6).Conclusion The obtained results demonstrated that the method is simple, rapid, sensitive, accurate and reliable, capable of being used for qualitative and quantitative analysis of bromadiolne in blood from the case of trace bromadiolone poisoning.
图2 归一化碰撞能为20%、30%、40%的溴敌隆质谱图(a); 归一化碰撞能为30%、45%、60%的溴敌隆质谱图(b)Fig.2 The mass spectra of bromadiolone at (20%, 30%, 40%) (a) and (30%, 45%, 60%) (b) normalized collision energy
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