共 31 条
Analyzing Brazilian Vehicle Documents for Authenticity by Easy Ambient Sonic-Spray Ionization Mass Spectrometry*
被引:19
作者:
Romao, Wanderson
[1
]
Vaz, Boniek G.
[1
]
Lalli, Priscila M.
[1
]
Bueno, Maria Izabel M. S.
[2
]
Correa, Deleon N.
[1
,3
]
Telles, Virginia L. C. N.
[3
]
de Castro, Eustaquio V. R.
[4
]
Eberlin, Marcos N.
[1
]
机构:
[1] Univ Estadual Campinas, Inst Chem, Thomson Mass Spectrometry Lab, BR-13084971 Campinas, SP, Brazil
[2] Univ Estadual Campinas, Inst Chem, Xray Spect Grp, BR-13084971 Campinas, SP, Brazil
[3] Criminalist Inst Dr Octavio Eduardo de Brito Alva, BR-05507060 Sao Paulo, Brazil
[4] Univ Fed Espirito Santo, Dept Chem, BR-29060900 Vitoria, ES, Brazil
基金:
巴西圣保罗研究基金会;
关键词:
forensic science;
questioned documents;
desorption;
ionization techniques;
ambient mass spectrometry;
EASI-MS;
Brazilian vehicle documents;
DESORPTION ELECTROSPRAY-IONIZATION;
BALLPOINT PEN INKS;
THIN-LAYER-CHROMATOGRAPHY;
INSTANTANEOUS TYPIFICATION;
LIQUID-CHROMATOGRAPHY;
RAMAN-SCATTERING;
ECSTASY TABLETS;
ELECTROPHORESIS;
DIFFERENTIATION;
BLACK;
D O I:
10.1111/j.1556-4029.2011.02005.x
中图分类号:
DF [法律];
D9 [法律];
R [医药、卫生];
学科分类号:
0301 ;
10 ;
摘要:
Using desorption/ionization techniques such as easy ambient sonic-spray ionization mass spectrometry (EASI-MS), it is possible to analyze documents of Brazilian vehicles for authenticity, providing a chemical profile directly from the surface of each document. A method for the detection of counterfeit documents is described, and the falsification procedure is elucidated. Forty authentic and counterfeit documents were analyzed by both positive and negative ion modes, EASI(+/-)-MS. EASI(+)-MS results identified the presence of (bis(2-ethylhexyl)phthalate plasticizer and of dihexadecyldimethylammonium biocide in both types of documents. For EASI(-)-MS results, the 4-octyloxybenzoic acid additive ([M + H]+: m/z 249) is present only in counterfeit documents. It was also found that counterfeit vehicle documents are produced via Laserjet printers. Desorption/ionization techniques, such as EASI-MS, offer therefore, an intelligent way to characterize the counterfeiting method.
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页码:539 / 543
页数:5
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