Raman spectroscopy for forensic pen ink investigation: a review

Area of Science:

• Forensic Science
• Analytical Chemistry
• Spectroscopy

Background:

• Raman spectroscopy (RS) has advanced significantly, offering advantages in diverse fields like forensics.
• Non-destructive analysis is crucial for preserving criminal evidence in forensic investigations.
• Pen ink characterization is vital for questioned documents, trace evidence, and dating investigations.

Purpose of the Study:

• To review the evolution of Raman spectroscopy techniques for pen ink identification.
• To explore the application of RS in characterizing document fraud.
• To compare RS with traditional analytical methods for ink analysis.

Main Methods:

• Review of literature on Raman spectroscopy techniques for ink analysis.
• Comparison of RS with conventional methods (e.g., microscopy, chromatography).
• Analysis of data to guide the selection of appropriate ink analysis methodologies.

Main Results:

• Raman spectroscopy demonstrates significant potential for identifying and characterizing pen inks.
• RS is effective for detecting alterations and potential fraud in documents.
• The review provides comparative data to aid in choosing optimal ink analysis techniques.

Conclusions:

• Raman spectroscopy is a valuable non-destructive tool for forensic document examination.
• RS offers advantages over traditional methods for pen ink analysis and fraud detection.
• This review assists forensic scientists in selecting the most suitable RS methodology for ink analysis.