06.07.2010
РОССИЙСКАЯ АКАДЕМИЯ НАУК

УРАЛЬСКОЕ ОТДЕЛЕНИЕ

ИНСТИТУТ ХИМИИ TBEPДОГО ТЕЛА
   
| | | | |
| | | | | |
 06.07.2010   Карта сайта     Language По-русски По-английски
Новые материалы
Экология
Электротехника и обработка материалов
Медицина
Статистика публикаций


06.07.2010



Revealing fake money



02 July 2010



A simple and fast technique to examine the surface of banknotes and identify counterfeits has been developed by scientists in Brazil and the US.


The counterfeiting of banknotes is a global problem that is increasing in scale and sophistication. Counterfeiters now use computerised reproduction methods like scanners and laser printers to copy real notes, and gone are the days when a fake could be spotted by simply testing the look and feel of the paper.


The new technologies used by counterfeiters have thrown out a challenge to law enforcement. 'Forensic laboratories are therefore confronted with an increasing demand to analyse larger numbers of samples with faster responses and reliable verdicts for samples fabricated with greater sophistication than ever,' says Marcos Eberlin, one of the researchers at the University of Campinas, Brazil.


With Graham Cooks at Purdue University in West Lafayette, US, Eberlin and colleagues have devised a mass spectrometric technique that can give a chemical profile of banknotes in seconds. There is almost no sample preparation required, it is non-destructive, and the test can also reveal which counterfeit method was used to create the 'funny money'.


Mass spec and money









Mass spectrometry detects fake notes



This new technique relies on using desorption ionisation mass spectrometry to test different spots on the banknote. The real banknotes show similar data (m/z ions), distributed evenly over the entire surface, despite age, denomination and colour pattern. This provides a fingerprint for the real banknotes. When the laserjet and inkjet notes are tested, a distinct set of ion markers can be seen and their fingerprint is quite different from the real money.


'The work convincingly demonstrates a relevant application of these techniques in combating currency forgery,' comments Niamh Nic Daeid, a forensic chemist at the University of Strathclyde in the UK. 'The next challenge will be to make this technology widely available to the forensic community as a robust and affordable technique.'


As well as discovering fake money, Eberlin can see this method being used in a preventative way. 'We are already working together with the Brazilian Federal Police and the manufactures in Brazil to find the most effective way to add these chemical signatures, either in ink formulations or as invisible stamps or bar codes, as a new and hard to imitate security measure for Brazilian banknotes,' he says.


Rebecca Brodie 


Enjoy this story? Spread the word using the 'tools' menu on the left or add a comment to the Chemistry World blog. 




Link to journal article



Instantaneous chemical profiles of banknotes by ambient mass spectrometry
Livia S. Eberlin, Renato Haddad, Ramon C. Sarabia Neto, Ricardo G. Cosso, Denison R. J. Maia, Adriano O. Maldaner, Jorge Jardim Zacca, Gustavo B. Sanvido, Wanderson Romão, Boniek G. Vaz, Demian R. Ifa, Allison Dill, R. Graham Cooks and Marcos N. Eberlin, Analyst, 2010
DOI: 10.1039/c0an00243g


Дизайн и программирование N-Studio 
А Б В Г Д Е Ё Ж З И Й К Л М Н О П Р С Т У Ф Х Ц Ч Ш Щ Ъ Ы Ь Э Ю Я © 2004-2024 ИХТТ УрО РАН
беременность, мода, красота, здоровье, диеты, женский журнал, здоровье детей, здоровье ребенка, красота и здоровье, жизнь и здоровье, секреты красоты, воспитание ребенка рождение ребенка,пол ребенка,воспитание ребенка,ребенок дошкольного возраста, дети дошкольного возраста,грудной ребенок,обучение ребенка,родить ребенка,загадки для детей,здоровье ребенка,зачатие ребенка,второй ребенок,определение пола ребенка,будущий ребенок медицина, клиники и больницы, болезни, врач, лечение, доктор, наркология, спид, вич, алкоголизм православные знакомства, православный сайт творчeства, православные рассказы, плохие мысли, православные психологи рождение ребенка,пол ребенка,воспитание ребенка,ребенок дошкольного возраста, дети дошкольного возраста,грудной ребенок,обучение ребенка,родить ребенка,загадки для детей,здоровье ребенка,зачатие ребенка,второй ребенок,определение пола ребенка,будущий ребенок