Discrimination of automotive window tint using ATR-FTIR spectroscopy and chemometrics

Grant, Braden; Sauzier, Georgina; Lewis, Simon W.

doi:10.1016/j.forsciint.2020.110338

Cited by 9 publications

(4 citation statements)

References 16 publications

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“…Grant et al approached the analysis of automotive window tints using ATR-FTIR spectroscopy. 184 Inter-and intrasample variability was tested, and LDA modeling was used to discriminate among 40 tint samples. Chemometric analysis was able to distinguish the samples with 96% accuracy, and all blind validation samples were correctly identified.…”

Section: T H Imentioning

confidence: 99%

“…Analyzing window tints can be used for criminal and civil investigations in cases involving hit-and-runs and questioned source cases, respectively. Grant et al approached the analysis of automotive window tints using ATR-FTIR spectroscopy . Inter- and intrasample variability was tested, and LDA modeling was used to discriminate among 40 tint samples.…”

Section: Chemistry: Trace Evidencementioning

confidence: 99%

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Innovative Vibrational Spectroscopy Research for Forensic Application

et al. 2023

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Section: T H Imentioning

confidence: 99%

Section: Chemistry: Trace Evidencementioning

confidence: 99%

Innovative Vibrational Spectroscopy Research for Forensic Application

et al. 2023

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“…Grant et al [ 156 ] used attenuated total reflectance Fourier transform infrared (ATR-FTIR) to examine automotive window tints and then applied chemometric tools to differentiate the polymer types of different tint products. The authors report being able to associate unknown tint samples to a known brand.…”

Section: Introductionmentioning

confidence: 99%

Interpol review of paint, tape, and glass evidence 2019–2022

Almirall

Trejos

2023

Forensic Science International: Synergy

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“…However, the objective of the study was not related to the discrimination of adhesive tapes for forensic purposes. In forensic context, ATR‐FTIR analysis supported by chemometric tools is gaining popularity and has been successfully applied for the discrimination of various other polymers such cling film [26] and automotive window tint [27]. It has also been demonstrated to be a suitable technique for the analysis of electrical tapes, and the author could differentiate the samples studied.…”

Section: Introductionmentioning

confidence: 99%

Discrimination of electrical tapes using ATR‐FTIR spectroscopy and chemometrics

Nimi

Chophi

Singh

2022

Journal of Forensic Sciences

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Electrical tapes are recovered during criminal investigations as physical evidence in cases of rape, kidnapping, and explosion incidents. The analysis of such evidence can provide an evidentiary link between the suspect, the victim, object, or the crime scene. In the present study, 25 brands of electrical tapes have been analyzed using ATR‐FTIR (attenuated total reflectance Fourier transform infrared) spectroscopy. Samples (1 cm2) were analyzed in the mid IR (Infrared) region from 4000–600 cm−1, and the functional groups of various components have been profiled. Chemometric methods‐PCA (principal component analysis) and PCA‐LDA (linear discriminant analysis) have been employed to interpret the data and classify the samples into its respective classes. Preliminary assessment of sample clustering due to similar chemical composition was visualized using PCA. PCA‐LDA applied for classification purpose yielded classification accuracy (calibration) of 92.98% for the adhesive side and 88% for the backing side. The validation results showed classification accuracy of 89.47% for the adhesive side and 84% for the backing side. Blind validation study was carried out using 5 samples, and classification accuracy of 100% and 80% was obtained for the adhesive and the backing side, respectively. In the current study, a preliminary substrate study was carried out, and the results showed that the backing samples could be more accurately matched to their correct source of origin than the adhesive side.

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Discrimination of automotive window tint using ATR-FTIR spectroscopy and chemometrics

Cited by 9 publications

References 16 publications

Innovative Vibrational Spectroscopy Research for Forensic Application

Innovative Vibrational Spectroscopy Research for Forensic Application

Interpol review of paint, tape, and glass evidence 2019–2022

Discrimination of electrical tapes using ATR‐FTIR spectroscopy and chemometrics

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