文献类型：期刊文献

英文题名：Combination of electrospray deposition technology of TiO2 nanoparticles and MALDI FTICR MSI for identification of fingerprint morphology and latent components

作者：Yang, Hui[1,2];Li, Shilei[1,3];Zhang, Qian[4];Wang, Zhenpeng[1];Li, Na[1,2];Han, Chao[1,2];Huo, Qing[4];Zhao, Zhenwen[1,2]

第一作者：Yang, Hui

通讯作者：Zhao, ZW[1]

机构：[1]Chinese Acad Sci, Key Lab Analyt Chem Living Biosyst, CAS Res Educ Ctr Excellence Mol Sci,Inst Chem, Beijing Natl Lab Mol Sci,Beijing Mass Spectrtun C, Beijing 100190, Peoples R China;[2]Univ Chinese Acad Sci, Grad Sch, Beijing, Peoples R China;[3]China Meat Res Ctr, Beijing 100068, Peoples R China;[4]Beijing Union Univ, Coll Biochem Engn, Beijing 100023, Peoples R China

第一机构：Chinese Acad Sci, Key Lab Analyt Chem Living Biosyst, CAS Res Educ Ctr Excellence Mol Sci,Inst Chem, Beijing Natl Lab Mol Sci,Beijing Mass Spectrtun C, Beijing 100190, Peoples R China

通讯机构：[1]corresponding author), Chinese Acad Sci, Key Lab Analyt Chem Living Biosyst, CAS Res Educ Ctr Excellence Mol Sci,Inst Chem, Beijing Natl Lab Mol Sci,Beijing Mass Spectrtun C, Beijing 100190, Peoples R China.

年份：2019

卷号：198

起止页码：310-315

外文期刊名：TALANTA

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000462803400041)】；

基金：This work was supported by National Natural Science Foundation of China (Grant No. 21575146, 21635008 and 21621062).

语种：英文

外文关键词：Fingerprint recognition; Electrospray deposition; Physical enhancement; MALDI FTICR MSI; TiO2 nanoparticles

摘要：In fingerprint recognition, besides the physical shape information afforded by fingerprint enhancement techniques (FET), in recent years, more and more efforts are focused on researching the chemical composition of a fingerprint residue. In this work, electrospray deposition method was elaborately used to softly and homogenously deposit the physical enhancers of FET, TiO2 nanoparticles (TiO2 NPs), onto fingerprints. The results showed that this type of deposition was nondestructive to the fingerprint morphology and provided the physical shape information containing all level features. Concurrently, the TiO2 NPs demonstrated as a better matrix of matrix-assisted laser desorption ionization mass spectrometry imaging (MALDI MSI) for analysis and imaging of latent components in fingerprint, including endogenous substances like triacylglycerols (TAGs), diacylglycerols (DAGs) and cholesterol esters (CEs), and exogenous substances such as certain ingredients in hand lotion. The chemical compositions in fingerprint are closely related to individual metabolites and individual lifestyles, and identification of these compositions by Fourier transform ion cyclotron resonance (FTICR) MS is extremely beneficial for forensic analysis. The combinations of electrospray deposition technology of TiO2 NPs and MALDI FTICR MSI for identification of fingerprint morphology and latent components provide dual-modes fingerprint recognition for forensic science.