Investigating the use of stable isotope analysis for determining the origin of questioned ink – Complete Phd and Masters Thesis

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Introduction

In forensic science, the analysis of ink can provide valuable information in cases involving forged documents, fraudulent contracts, or other criminal activities. The use of stable isotope analysis has emerged as a powerful tool for determining the origin of questioned ink. This thesis aims to investigate the potential of stable isotope analysis in forensic ink analysis and to contribute to the development of this field.

Background of Study

Ink analysis has traditionally relied on techniques such as chromatography and spectroscopy to identify the chemical composition of ink. However, these methods have limitations when it comes to determining the origin of ink. Stable isotope analysis, on the other hand, offers a unique approach by comparing the isotopic composition of the ink with known reference samples. This can provide valuable information about the geographic origin of the ink and potentially link it to a specific source.

Problem Statement

Despite the potential of stable isotope analysis in forensic ink analysis, there is still a lack of research on its application in real-world forensic cases. This thesis seeks to address this gap by investigating the efficacy of stable isotope analysis in determining the origin of questioned ink and exploring its potential as a forensic tool.

Objective of Study

The main objective of this thesis is to evaluate the use of stable isotope analysis for determining the origin of questioned ink in forensic investigations. Specifically, the study aims to:

1. Review the existing literature on stable isotope analysis in forensic ink analysis
2. Investigate the isotopic composition of questioned ink samples from different sources
3. Compare the isotopic composition of questioned ink with known reference samples
4. Assess the reliability and accuracy of stable isotope analysis in determining the origin of questioned ink

Limitation of Study

It is important to note that this study has certain limitations, including the availability of reference samples, the precision of the stable isotope analysis technique, and the potential for contamination in the ink samples. These limitations may impact the accuracy and reliability of the results obtained in this study.

Scope of Study

This thesis focuses specifically on the use of stable isotope analysis for determining the origin of questioned ink in forensic investigations. The study will analyze ink samples from different sources and compare their isotopic composition to identify potential geographical origins.

Significance of Study

By investigating the use of stable isotope analysis in forensic ink analysis, this thesis aims to contribute to the advancement of forensic science and provide valuable insights into the potential applications of stable isotope analysis in criminal investigations. The findings of this study may have implications for forensic laboratories, law enforcement agencies, and legal professionals.

Structure of the Thesis

This thesis is organized into five chapters. Chapter one provides an introduction to the topic, including the background of the study, problem statement, objective of the study, limitations, scope, significance, and structure of the thesis. Chapter two presents a literature review on stable isotope analysis in forensic ink analysis. Chapter three outlines the research methodology, including the sampling process, data collection, and analysis techniques. Chapter four discusses the findings of the study, including the analysis of questioned ink samples and comparisons with reference samples. Finally, chapter five presents the conclusions and summarizes the key findings of the thesis.

Definition of Terms

Before proceeding with the literature review and research methodology, it is important to define some key terms used throughout this thesis:

1. Forensic science: The application of scientific principles to investigate and solve crimes.
2. Stable isotope analysis: A technique that measures the relative abundance of stable isotopes in a sample to determine its origin or source.
3. Questioned ink: Ink that is under investigation in a forensic case to determine its authenticity or origin.
4. Isotopic composition: The distribution of stable isotopes in a sample, which can vary based on geographical location and other factors.
5. Reference samples: Known samples of ink with a documented origin or source, used for comparison in forensic analysis.

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