Immediate differentiation of unusual seed oils by easy ambient sonic-spray ionization mass spectrometry and chemometric analysis

Santos, Fábio Neves dos; Santos, Jandyson M.; Mesquita, Paulo Roberto Ribeiro; Oliveira, Karla B.; Rodrigues, Frederico M.; Lopes, Wilson Araújo; Eberlin, Marcos N.

doi:10.1039/c5ay03061g

Cited by 11 publications

(1 citation statement)

References 45 publications

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“…EASI‐MS has been used to study a wide range of samples, such as food, vegetable oils, 18–20 fuels, 21 drugs and medications, 22,23 natural products, 24 biological samples, 25 and others 13 . It has also been used to study problems in forensic science other than questioned documents, such as the authenticity of banknotes 26 and driving licences 27 …”

Section: Introductionmentioning

confidence: 99%

Rapid and direct detection of artificially aged papers employing easy ambient sonic‐spray ionization mass spectrometry

Oliveira

Morais

Correa

et al. 2021

Rapid Comm Mass Spectrometry

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Rationale The effort to make fake documents look real leads to the use of crickets and beverages to produce artificially aged papers, as land titles, based on yellowing caused by the use of these methods. An old practice in Brazil, called “cricketing”, has led to the misappropriation of Brazilian land using these documents. We propose a rapid, simple, instantaneous and non‐destructive method to identify artificially aged papers by easy ambient sonic‐spray ionization mass spectrometry (EASI‐MS) analysis. Methods Three typical aging procedures were used to obtain artificially aged papers using coffee, cola drink, and crickets, with the papers being analyzed by EASI‐MS. Multivariate statistical analyses were performed on the data to find the sample groups and to study the most relevant ions of each ageing procedure. High‐resolution MS (HRMS) was used to obtain the exact masses and attribute formulae to relevant ions present in the samples. Results The combination of EASI‐MS and multivariate statistical analyses allowed us to identify the most relevant ions to classify the adulteration of documents and HRMS identified most of these relevant ions. TMS fingerprinting in combination with multivariate analysis also demonstrated that this approach can qualitatively differentiate all the examined paper samples. Conclusions We developed a cheap, fast and easy method that can help to elucidate counterfeit documents that have been artificially aged, helping to identify chemical additives and one that can be used in forensic laboratories.

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