Sex discrimination from urine traces for forensic purposes using attenuated total reflectance Fourier transform infrared spectroscopy and multivariate data analysis

Sharma, Shveta; Kaur, Harpreet; Singh, Rajinder

doi:10.1007/s00414-022-02782-5

Cited by 5 publications

(3 citation statements)

References 51 publications

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“…Singh et al used attenuated reflectance Fourier transform infrared spectroscopy to perform gender identification of dried traces of urine [11].…”

Section: Introductionmentioning

confidence: 99%

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Rapid discrimination of urine specific gravity using spectroscopy and a modified combination method based on SPA and spectral index

Yang,

Cai,

et al. 2023

Journal of Biophotonics

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To achieve high‐accuracy urine specific gravity discrimination and guide the design of four‐waveband multispectral sensors. A modified combination strategy was attempted to be proposed based on the successive projections algorithm (SPA) and the spectral index (SI) in the present study. First, the SPA was used to select four spectral variables in the full spectra. Second, the four spectral variables were mathematically transformed by SI to obtain SI values. Then, SPA gradually fusions the SI values and establishes models to identify USG. The results showed that the SPA can screen out the four characteristic wavelengths related to the measured sample attributes. SIs can be used to improve the performance of constructed prediction models. The best model only involves four spectral variables and 1 SI value, with high accuracy (91.62%), sensitivity (0.9051), and specificity (0.9667). The results reveal that m‐SPA‐SI can effectively distinguish USG and provide design guidance for 4‐wavelength multispectral sensors.

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“…Singh et al used attenuated reflectance Fourier transform infrared spectroscopy to perform gender identification of dried traces of urine [11].…”

Section: Introductionmentioning

confidence: 99%

“…It has been shown to have the potential for urine analysis [10]. For example, Singh et al used attenuated reflectance Fourier transform infrared spectroscopy to perform gender identification of dried traces of urine [11].…”

Section: Introductionmentioning

confidence: 99%

Rapid discrimination of urine specific gravity using spectroscopy and a modified combination method based on SPA and spectral index

Yang,

Cai,

et al. 2023

Journal of Biophotonics

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show abstract

“…Together, chemometric and spectroscopic techniques improve our understanding of instrumental data and can be applied in different areas of forensic science [34]. Chemometric studies have been carried out on blood traces [35], urine traces for sex discrimination [36], soils [37], biological traces [38], textile fibers [39], and vehicle bumper fragments [40], among others [41][42][43][44][45]. The combination of chemometric and spectroscopic methods applied to experimental analyses of classic illicit drugs is already being widely used [7,35,37,38,43,46].…”

Section: Introductionmentioning

confidence: 99%

In Silico Infrared Spectroscopy as a Benchmark for Identifying Seized Samples Suspected of Being N-Ethylpentylone

2022

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New psychoactive substances (NPSs) have concerned authorities worldwide, and monitoring them has become increasingly complex. In addition to the frequent emergence of new chemical structures, the composition of adulterants has changed rapidly. Reliable reference data on NPS are not always available, and identifying them has become an operational problem. In this study, we evaluated the infrared spectral data of 68 seized samples suspected of containing a synthetic cathinone (N-ethylpentylone). We used quantum chemistry tools to simulate infrared spectra as a benchmark and obtained infrared spectra for different cathinones, structurally analogous amphetamines, and possible adulterants. We employed these in silico data to construct different chemometric models and investigated the internal and external validation and classification requirements of the models. We applied the best models to predict the classification of the experimental data, which showed that the seized samples did not have a well-defined profile. Infrared spectra alone did not allow N-ethylpentylone to be distinguished from other substances. This study enabled us to evaluate whether experimental, in silico, and applied statistical techniques help to promote forensic analysis for decision-making. The seized samples required in-depth treatment and evaluation so that they could be correctly analyzed for forensic purposes.

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Sex and blood group determination from hair using ATR-FTIR spectroscopy and chemometrics

Sharma,

Gupta,

Yadav

2023

Int J Legal Med

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Sex discrimination from urine traces for forensic purposes using attenuated total reflectance Fourier transform infrared spectroscopy and multivariate data analysis

Cited by 5 publications

References 51 publications

Rapid discrimination of urine specific gravity using spectroscopy and a modified combination method based on SPA and spectral index

Rapid discrimination of urine specific gravity using spectroscopy and a modified combination method based on SPA and spectral index

In Silico Infrared Spectroscopy as a Benchmark for Identifying Seized Samples Suspected of Being N-Ethylpentylone

Sex and blood group determination from hair using ATR-FTIR spectroscopy and chemometrics

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