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by Bianca Faceto

Abstract

This quantitative research paper focuses on the advances in Forensic Chemistry in the last ten years. In this paper, the most commonly used techniques for the main physical evidences are being revisited and compared. Beyond this, the paper describes what problems could be solved with the development of the technology in Chemistry. The discussion focus in three main evidences: combustion-based, drug analysis and classical trace evidence. Firearms discharge residues (FDRs), arson and explosives are evidences combustion-based. And soil, glass, paint fibers, etc, are called classical trace evidence. Within the analysis, the most currently developed are scanning electron microscope with energy dispersive spectroscopy (SEM-EDS), high performance liquid chromatography (HPLC) with amperometric detection, gas chromatography with thermal energy analysis (GC-TEA), liquid chromatography with mass spectrometry (LC-MS,.Portable X-ray fluorescence (XRF).

Introduction

I came to the United States to be able to delve in the field of Forensic Chemistry, and still weak in Brazil. So the topic I wish to search for this work is the advances in Forensic Chemistry.

Thus, being able to take the time to delve into advances in research of these days, I'll be much more prepared to start my classes in Fall University. To do this research I will have to seek many current articles on Forensic Chemistry and truly believe that this will be the best way for me to learn more about: looking by myself.

Methodology Section

As this is a review work, the methodology includes researching articles and books correlated with the topic. Firstly, I made an outline with the subtopics of this subject. After I specified the sub topics that would be searched, I searched articles that spoke of evidence and in which each technique was being used to analyze it. Afterwards, it was possible to say which are the most used and techniques which are being developed today.

1. Databases Platforms

To do this research, the most used databases platforms such as ISI Web of Knowledge, Science Direct, the EBSCO Discovery Service and the Scholar Google. The ISI Web of Knowledge can provide all articles with the words, but it is more difficult to select the relevant articles. So, it is better to use the Scholar Google if you do not know exactly what you are looking for. The Science Direct is more specific and needs more attention for the search. The EBSCO Discovery Service is very helpful because it is one of the biggest available platforms.

2. Journals

I choose focusing on two important Journals in this field: the Journal of Forensic Sciences and the Forensic Science International. The research made in these Journals was, mostly, in a chronologic way. I could see the advances in the lasts years published since the last one at the first. I read the issues looking for the methods which the methods that most appeared.

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Conclusion

The chemical can be applied in many areas of forensic science. With this work I could see that the more developed the techniques, they can be further improved. And every improvement may lead to the resolution of a case than with previous techniques could not be resolved. Thus, the best initiative to develop certain methods and own need. For scientists to have access to criminal cases, it is very important that there is communication between the police force and scientists.