Distinguishing authentic and counterfeit banknotes by surface chemical composition determined using electrospray laser desorption ionization mass spectrometry

被引：16

作者：

Kao, Yi-Ying ^{[1
,2
]}

Cheng, Chu-Nian ^{[3
]}

Cheng, Sy-Chyi ^{[3
]}

Ho, Hsiu-O ^{[1
]}

Shiea, Jentaie ^{[3
,4
]}

机构：

[1] Taipei Med Univ, Coll Pharm, Taipei, Taiwan

[2] Minist Justice, Invest Bur, New Taipei, Taiwan

[3] Natl Sun Yat Sen Univ, Dept Chem, Kaohsiung 80424, Taiwan

[4] Kaohsiung Med Univ, Dept Med & Appl Chem, Kaohsiung, Taiwan

来源：

JOURNAL OF MASS SPECTROMETRY | 2013年 / 48卷 / 11期

关键词：

banknote; electrospray laser desorption ionization; ambient mass spectrometry; money counterfeiting; principal component analysis; ILLICIT DRUGS;

D O I：

10.1002/jms.3263

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

Electrospray laser desorption ionization mass spectrometry (ELDI/MS) was used to rapidly distinguish authentic banknotes from counterfeits of the US dollar and the New Taiwan dollar. The banknotes' surfaces were irradiated with a pulsed ultraviolet laser, after which the desorbed ink compounds entered an electrospray plume and formed ions via interactions with charged solvent species. Authentic banknotes were found to differ from their counterfeit equivalents in their surface chemical compositions. The detected chemical compounds included various polymers, plasticizers and inks; these results were comparable with those obtained using solvent extraction followed by electrospray ionization mass spectrometry analysis. Because of the high spatial resolution of the laser beam, ELDI/MS analysis resulted in minimal damage to the banknotes. Copyright (c) 2013 John Wiley & Sons, Ltd.

引用

页码：1129 / 1135

页数：7