Analysis of questioned documents: A review

Calcerrada, Matías; García-Ruiz, Carmen

doi:10.1016/j.aca.2014.10.057

Cited by 119 publications

(53 citation statements)

References 139 publications

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“…Since it represents a relatively non-destructive technique, Raman spectroscopy promotes the identification of pigments and dyes, which often represent the most intense contributors to the Raman signal. While several reviews on the analysis of questioned documents discuss most of the recent literature concerning normal Raman spectroscopy (Braz et al 2013;Calcerrada and Garcia-Ruiz 2015), the special contributions of SERS studies are presented here.…”

Section: The Interface With Forensics: Modern Inksmentioning

confidence: 99%

Surface-Enhanced Raman Spectroscopy: Using Nanoparticles to Detect Trace Amounts of Colorants in Works of Art

Pozzi

Zaleski

Casadio

et al. 2016

Nanoscience and Cultural Heritage

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In recent years, powerful physical processes occurring in the vicinity of nanoscale metal surfaces have been exploited in the art world for the detection of trace amounts of colorants with surface-enhanced Raman spectroscopy (SERS). With this technique, naturally occurring and man-made organic molecules used as dyes and pigments in objects from antiquity to the present day are being detected with high molecular specificity and unprecedented sensitivity. This chapter reviews the broad spectrum of SERS analytical methodologies and instrumental improvements that have been developed over the years in the field of cultural heritage science, and discusses significant case studies within different types of works of art and archaeological artifacts.

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Section: The Interface With Forensics: Modern Inksmentioning

confidence: 99%

Surface-Enhanced Raman Spectroscopy: Using Nanoparticles to Detect Trace Amounts of Colorants in Works of Art

Pozzi

Zaleski

Casadio

et al. 2016

Nanoscience and Cultural Heritage

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“…[4][5][6][7][8][9] or a combination of both. According to a survey, spectroscopic techniques are more often used for the analysis of inks [10]. This is because of their high sensitivity and minimum damage to documents.…”

Section: Differentiation Of Red and Black Ballpoint Pen Inks Using Himentioning

confidence: 99%

Differentiation of Red and Black Ballpoint Pen Inks using High Performance Thin Layer Chromatography and Gas Chromatography-Mass Spectrometry

Saini

Rathore

2018

AJFSFM

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Original Article 830 ferentiate blue, black and red ballpoint pen inks manufactured in Malaysia and Romania [12][13][14][15]. GC-MS is another efficient tool that discriminates inks on the basis of their non-coloured components such as their solvents and additives. It was employed to differentiate two red pilot ballpoint pen inks manufactured in 1998 and 1999 [16]. The combined use of TLC and GC-MS has solved two actual cases of alteration. Several research works have reported the characterization of blue ballpoint pen inks manufactured in different parts of the world [17-20]. However, very limited research has been conducted to differentiate the ballpoint pen inks of other colours, such as red and black.Thus, the present study was aimed at analysing red and black ballpoint pen inks of Indian origin using HPTLC and GC-MS techniques. This study also verifies the validity of the used techniques in terms of repeatability and reproducibility. Materials and MethodsA total of 78 ballpoint pens including 40 red and 38 black pen inks were acquired from local stationary shops in India (Table-1). The collected pens were each marked with a unique sample identification code. Each pen was used to write the phrase "FORENSIC SCIENCE" multiple times on A4 sheets. Each prepared sheet was placed in separate envelopes and stored in closed cabinets at normal room temperature. Two discs (1 mm diameter) of ink strokes were punched from each prepared sheet using a metal handheld puncher and were then dissolved in 30 µL of HPLC grade methanol (Loba Chemie, Pvt. Ltd, India).Blank paper and reference dyes dissolved in methanol were considered as standard samples.

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“…Many different techniques have been applied to the analysis of red inks . Spectroscopic techniques including, Raman spectroscopy , FTIR , laser‐induced breakdown spectroscopy , and MS are widely used for this purpose.…”

Section: Introductionmentioning

confidence: 99%

Analysis of red inks by micellar electrokinetic capillary chromatography with laser‐induced fluorescence detection

et al. 2015

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A combination of MEKC with a--highly sensitive but not commonly used--LIF detector was tested regarding the possibility of differentiation of red inks. The separation process was conducted in a fused silica capillary (id 50 μm, 60/50 cm total/effective length) in BGE consisting of 40 mM sodium borate, 20 mM SDS and 10% v/v ACN with 30 kV applied. The optimized temperature of storage and capillary was 10 and 25°C, respectively. The samples were prepared using 20 dots (ø 0.5 mm), extracted in 35 μL BGE and diluted with 30 μL of water. The proposed method showed excellent repeatability and reproducibility (RSD (tm ) < 0.8 and < 2.5%, respectively). It was applied to group identification and differentiation of different brands, models, and batches of red printing, stamp, and pen inks. It was demonstrated that differentiation can be performed effectively on the basis of migration times and ratios of peak areas. The high efficiency of the developed method was indicated by discriminating power ranging from 87.3 to 98.8%, for stamp and pen inks, respectively. The results showed that the proposed procedure can be valuable for an objective examination of the red parts of questioned documents.

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Analysis of questioned documents: A review

Cited by 119 publications

References 139 publications

Surface-Enhanced Raman Spectroscopy: Using Nanoparticles to Detect Trace Amounts of Colorants in Works of Art

Surface-Enhanced Raman Spectroscopy: Using Nanoparticles to Detect Trace Amounts of Colorants in Works of Art

Differentiation of Red and Black Ballpoint Pen Inks using High Performance Thin Layer Chromatography and Gas Chromatography-Mass Spectrometry

Analysis of red inks by micellar electrokinetic capillary chromatography with laser‐induced fluorescence detection

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