Age estimation of bloodstains using smartphones and digital image analysis

Thanakiatkrai, Phuvadol; Yaodam, Alisa; Kitpipit, Thitika

doi:10.1016/j.forsciint.2013.09.027

Cited by 55 publications

(25 citation statements)

References 21 publications

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“…There are a lot of information can be obtained from the bloodstains itself such as DNA for individualization and to reconstruct the crime scene event. This kind of sample usually can be found in violent crime scene such as murder or sexually abused cases [1,2]. Understanding the properties of blood is imperative for study of bloodstain evidence and for interpretation [3].…”

Section: Introductionmentioning

confidence: 99%

Estimation of The Age of Bloodstains on Soil Matrices By ATR-FTIR Spectroscopy and Chemometrics

Hassan*¹,

Sandran²,

Mohamad³

et al. 2019

IJITEE

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 Abstract: Estimating the accurate time of a crime occurred is one of the priceless information in forensics practice and for the investigation purposes. There are profuse of evidence can be found at the crime scene and each of the evidence will give an important information for the investigation purposes. In this study, the Attenuated Total Reflection (ATR)-Fourier Transform Infrared (FTIR) technique combined with advanced chemometrics method was deployed. For the purpose of determining the age of the bloodstain, two storage conditions; indoor and outdoor were set up to simulate real crime scene scenario and bloodstains on soil matrices were exposed and analyzed for selected time intervals for up to 63 days. Six partial least squares regression-discriminant analysis (PLSR-DA) models were constructed-indoor and outdoor models with 1-63 days-exhibited good performance with acceptable values of predictive root mean squared error (7.04-16.0) and r2 values (0.45-0.89) , respectively. Using these models, correct classification of the aged bloodstains was calculated up to 70%. In conclusion, the multivariate analysis based on PLS-DA models indicates that ATR-FTIR spectroscopy, coupled with chemometrics provides acceptable discrimination for rapid and non-destructive determination the age of bloodstains on soil matrices in particularly for outdoor and very aged bloodstains.

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Section: Introductionmentioning

confidence: 99%

Estimation of The Age of Bloodstains on Soil Matrices By ATR-FTIR Spectroscopy and Chemometrics

Hassan*¹,

Sandran²,

Mohamad³

et al. 2019

IJITEE

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“…By the digital camera, an inexpensive smartphone could take a photograph for the sample under rapid analysis at anytime and anywhere . Today, this idea has been applied to various analyses, such as bloodstains , pH , methamphetamine and soil color . However, until now, the field of smartphones‐based detection of chiral pollutants still remains unexplored.…”

Section: Introductionmentioning

confidence: 99%

Smartphone‐based colorimetric chiral recognition of ibuprofen using aptamers‐capped gold nanoparticles

Jing

Liu

et al. 2017

Electrophoresis

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Sensitive and fast detection of ibuprofen enantiomers is very critical for required routine monitoring and risk assessment of trace pollutants in water samples. Here a simple, rapid and highly sensitive android smartphone application for chiral recognition was developed. Aptamer-capped gold nanoparticles (AuNPs) was demonstrated as an efficient detection platform for (S)-(+)-ibuprofen (S-Ibu) and (R)-(-)-ibuprofen (R-Ibu). Detachment of an enantioselective aptamer from the AuNPs surface and binding with an enantiomer of Ibu lead to AuNPs aggregation, which allows a rapid enantiodiscrimination of Ibu by monitoring the absorbance changes of AuNPs solution in the UV-vis spectrum. Under optimal conditions, the limit of detection for S-Ibu and R-Ibu was 1.24 and 3.91 pg/mL, respectively. These probes showed good chiral recognition ability in mixed samples (i.e. S-Ibu + R-Ibu) and environmental samples. These advantages can be further developed by quantitative measurement with smartphone, which opens new opportunities for on-site detection of trace chiral pollutants in a simple and practical manner.

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“…In medicine area, a variety of applications are available: age estimation of bloodstains [24], to provide radiation dose estimates and associated cancer risks (non-fatal and fatal) and serve as a method by which to track an individual's cumulative exposure to radiology [25], to detect silent atrial fibrillation [26] and for the detection of an irregular pulse in patients with atrial fibrillation [27], quantitation of prostate specific antigen [28], in surgeons [29]. However, with the best of our knowledge, there is no paper that describes the application of iPhone for ink analysis in documentoscopy.…”

Section: Introductionmentioning

confidence: 99%

Nondestructive identification of blue pen inks for documentoscopy purpose using iPhone and digital image analysis including an approach for interval confidence estimation in PLS-DA models validation

Valderrama

2016

Chemometrics and Intelligent Laboratory Systems

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Age estimation of bloodstains using smartphones and digital image analysis

Cited by 55 publications

References 21 publications

Estimation of The Age of Bloodstains on Soil Matrices By ATR-FTIR Spectroscopy and Chemometrics

Estimation of The Age of Bloodstains on Soil Matrices By ATR-FTIR Spectroscopy and Chemometrics

Smartphone‐based colorimetric chiral recognition of ibuprofen using aptamers‐capped gold nanoparticles

Nondestructive identification of blue pen inks for documentoscopy purpose using iPhone and digital image analysis including an approach for interval confidence estimation in PLS-DA models validation

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