کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
95205 160418 2016 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Anti-theft device staining on banknotes detected by mass spectrometry imaging
ترجمه فارسی عنوان
رنگ آمیزی دستگاه ضدسرقت بر روی اسکناس ها تشخیص داده شده توسط تصویربرداری طیف سنجی جرمی
کلمات کلیدی
علم قضایی؛ MAAQ؛ رودامین؛ MSI؛ DESI
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی


• ATM theft, particularly with the use of explosives, is a serious and increasing crime in Brazil.
• Anti-theft device (ATD) ink makes banknotes worthless and nontransferable after an ATM blown up.
• Rhodamine family and 1-methylaminoanthraquinone (MAAQ) are the dyes applied in the world as ATD.
• Mass spectrometry imaging (MSI) allows tracking painted banknotes after the clean and bleach attempt.

We describe the identification and limits of detection of ink staining by mass spectrometry imaging (MSI), as used in anti-theft devices (ATDs). Such ink staining is applied to banknotes during automated teller machine (ATM) explosions. Desorption electrospray ionization (DESI) coupled with high-resolution and high-accuracy orbitrap mass spectrometry (MS) and a moving stage device were applied to obtain 2D molecular images of the major dyes used for staining, that is, 1-methylaminoanthraquinone (MAAQ), rhodamine B (RB) and rhodamine 6G (R6G). MAAQ could not be detected because of its inefficient desorption by DESI from the banknote cellulose surface. By contrast, ATD staining on banknotes is perceptible by the human naked eye only at concentrations higher than 0.2 μg cm−2, whereas both RB and R6G at concentrations 200 times lower (as low as 0.001 μg cm−2) could be easily detected and imaged by DESI–MSI, with selective and specific identification of each analyte and their spatial distribution on samples from suspects. This technique is non-destructive, and no sample preparation is required, which ensures sample preservation for further forensic investigations.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Forensic Science International - Volume 260, March 2016, Pages 22–26
نویسندگان
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