Öz
Infrared (IR) spectroscopy
has been extensively used for the examination of trace evidence in a forensic
field since it is non-destructive, rapid, objective, operator-independent and
confirmatory technique. Such traces can
be obtained from biological resources such as hair, blood, fingerprints and
non-biological resources such as drug, gun-shot residue etc. The fingerprints
which is unique per person, and the age of blood stains have been analyzed efficiently
and succesfully without destruction of the sample by IR spectroscopy. Moreover,
posmortem time interval was estimated by the spectral analysis of metabolic
changes in the tissues. This technique has been also successfully used in the
characterization and screening of illicit drugs, explosives and inks etc.
The use of IR
spectroscopy in Forensic Science started in 1970s with identification illicit
drugs. Employement of Fourier transform
processing in 1990s enabled to investigate different type of samples, including
aqueous samples with increased speed and sensitivity. Therefore, with the
development of instrumentation and the use of advanced chemometric analysis
methods, these techniques have recently become more popular in forenscis
science. The development of the
attenuated total reflectance (ATR) unit enabled the investigaton of systems
without the need for complex sample preparation. With the development of
sophisticated techniques such as synchrotron radiation-Fourier transform
infrared microscopy in conjunction with advanced statistical analyses, chemical
properties of bulk and micro-sized particles can be identified. In this
presentation, forensic application of infrared spectroscopy on determination of
postmortem interval, hair analysis, fingerprint analysis, body fluids, drug
analysis explosives will be specifically mentioned.
Anahtar Kelimeler
Kaynakça
- Feride SEVERCAN, Nihal Simsek OZEK
- Department of Biological Sciences, Middle East Technical University, 06800 Ankara, Turkey. Department of Biology, Atatürk University, 25240 Erzurum, Turkey
Öz
Kaynakça
- Feride SEVERCAN, Nihal Simsek OZEK
- Department of Biological Sciences, Middle East Technical University, 06800 Ankara, Turkey. Department of Biology, Atatürk University, 25240 Erzurum, Turkey
Ayrıntılar
| Yazarlar | |
|---|---|
| Yayımlanma Tarihi | 16 Şubat 2017 |
| Yayımlandığı Sayı | Yıl 2017 Cilt: Volume 2 Sayı: İssue 1 (1) - 2.İnternational Congress Of Forensic Toxicology |