A Method for Determining PFAS in Bovine Meat and Tuna Fish by UHPLC-HRMS Orbitrap [0.03%]
基于UHPLC-HRMS轨道阱测定牛肉和金枪鱼中PFAS的方法
Andrea Roviaro,Aurora Scarduzio,Sara Savini et al.
Andrea Roviaro et al.
Per- and polyfluoroalkyl substance (PFAS) can be present in foodstuff, including preserved foods like canned meats, due to their ubiquity and difficult degradation. In this work, an analytical method for the quantification of 20 PFAS in can...
Characterization of the Trimethylsilyl Derivatives of 6-Amino-3-methyl-1,4-diphenyl-1,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile and Its Analogs by Electron Ionization Gas Chromatography/Mass Spectrometry [0.03%]
电子轰击气相色谱/质谱法表征6-氨基-3-甲基-1,4-二苯基-1,4-二氢吡喃并吡唑-5-腈及其类似物的三甲硅烷衍生物
Quan-Long Pu,Yufang Zheng,Edward P Erisman et al.
Quan-Long Pu et al.
Pyranopyrazoles, especially pyrano[2,3-c]pyrazoles, have broad applications as pharmaceutical ingredients and biodegradable agrochemicals, with new compounds and synthesis methods continually emerging. Gas chromatography/mass spectrometry (...
Investigation on Chiral Amino Acids Enantiomeric Excess With Cyclodextrin Inclusion Complex Ions Assisted Differential Ion Mobility Separation Mass Spectrometry [0.03%]
手性氨基酸对映体过量值的圆二色谱离子辅助差示离子淌度质谱研究
Simin Zhang,Xiangfeng Chen,T-Y Lui et al.
Simin Zhang et al.
Development of a rapid, inexpensive, and specific method for chiral amino acids (AAs) identification and separation is challenging owing to their similar properties. In this work, a chiral AAs separation method was developed by analyzing th...
Extend m/z Range of External Ion Injection Into Ion Trap/TOFMS: SIMION Analysis [0.03%]
基于SIMION的外加离子注入离子阱飞行时间质谱m/z范围拓展分析
Yixue Cao,Ping Chen,Xuesong Zhang et al.
Yixue Cao et al.
Ion trap usually serves as a TOF pusher region in ion trap time-of-flight mass spectrometer (IT/TOF), achieving benefits of high duty cycle, MS/MS capability, and high mass resolution. While a short ion trap rod length improves TOF resoluti...
Quantitative Mass Spectrometry Imaging by Targeted-DESI-MSI in MRM Mode Provides Higher Sensitivity and Specificity for Fast Quantification of Chloroquine Drug in Mice Kidney [0.03%]
MRM模式下的目标DESI MSI定量质谱成像技术可实现快速准确定量小鼠肾脏中氯喹药物的能力
Md Muedur Rahman,Mst Sayela Afroz,Md Al Mamun et al.
Md Muedur Rahman et al.
Quantitative mass spectrometry imaging (QMSI) is being applied for spatial quantification of drugs and metabolites using mass spectrometry imaging (MSI) tools. DESI-MSI is ideally suited to QMSI as a soft and ambient ionization technique. H...
Adriano Reis,Caroline Pais Carvalho,Iasmim Lopes de Lima et al.
Adriano Reis et al.
We have investigated the ability of a MasSpec Pen (MSPen) "three-in-one" (extraction, transfer, and ionization) device coupled to a mass spectrometer to provide instantaneous chemical profiles that could promptly characterize wood samples f...
Qualitative and Comparative Analysis of Chemical Constituents in Epimedii Folium From Four Species Based on UPLC-ZenoTOF-MS/MS [0.03%]
基于UPLC-Q-TOF-MS/MS的四种Epimedii Folium化学成分定性和比较分析
Jia Xue,Zhichen Cai,Dongyang Yi et al.
Jia Xue et al.
Epimedii Folium (EF) is frequently used in clinical as traditional Chinese medicine with a long history in China. The Pharmacopoeia of the People's Republic of China (2020 Version) contains four species of the plants of the genus Epimedium ...
Comparative Study
Journal of mass spectrometry : JMS. 2025 Jun;60(6):e5146. DOI:10.1002/jms.5146 2025
Development of Simultaneous Analytical Method of Three Polypeptide Toxins α-Amanitin, β-Amanitin and Phalloidin in Poisonous Mushrooms and Human Serum Using UHPLC-MS/MS [0.03%]
采用UHPLC-MS/MS法同时检测毒蘑菇和人血清中三种多肽毒素α-鹅膏蕈碱、β-鹅膏蕈碱和鬼笔环肽的方法学建立
Hang-Ji Ok,Eun-Young Park,Yongho Shin et al.
Hang-Ji Ok et al.
Accidental ingestion of toxic mushrooms remains a global public health concern because of the presence of highly potent peptide toxins such as α-amanitin, β-amanitin, and phalloidin. These compounds exhibit strong hepatotoxicity and can l...
Surface and Subsurface Mass Spectrometric Analysis of Dexamethasone in Solid Pharmaceutical Dosage Forms [0.03%]
固体制剂中地塞米松的表面和亚表面质谱分析
Matjaž Finšgar
Matjaž Finšgar
This study presents an in-depth mass spectrometric investigation of dexamethasone (DEX) distribution within pharmaceutical tablets using time-of-flight secondary ion mass spectrometry (ToF-SIMS) combined with gas cluster ion beam (GCIB) spu...
Elizabeth K Neumann
Elizabeth K Neumann
Dynamic biological processes in the brain involve complex interactions between various cell types, and these interactions span multiple biological scales. Each of these domains are crucial in maintaining brain health. Traditional methods, s...