Determination of calcium and magnesium in postmortem human vitreous humor as a test to ascertain the cause and time of death

1989 ◽  
Vol 102-102 (2-3) ◽  
Author(s):  
R. Nowak ◽  
S. Balabanova
Keyword(s):  
Vitreous Humor ◽  
Time Of Death ◽  
Calcium And Magnesium

scholarly journals Application of Innovative TGA/Chemometric Approach for Forensic Purposes: The Estimation of the Time since Death in Contaminated Specimens

Diagnostics ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 121
Author(s):  
Roberta Risoluti ◽  
Giuseppina Gullifa ◽  
Vittorio Fineschi ◽  
Paola Frati ◽  
Stefano Materazzi
Keyword(s):  
Multidisciplinary Approach ◽  
Vitreous Humor ◽  
Classification Model ◽  
Forensic Sciences ◽  
Time Since Death ◽  
Time Of Death ◽  
Novel Approach ◽  
Chemometric Approach ◽  
Postmortem Examinations

Chronothanatology has always been a challenge in forensic sciences. Therefore, the importance of a multidisciplinary approach for the characterization of matrices (organs, tissues, or fluids) that respond linearly to the postmortem interval (PMI) is emerging increasingly. The vitreous humor is particularly suitable for studies aimed at assessing time-related modifications because it is topographically isolated and well-protected. In this work, a novel approach based on thermogravimetry and chemometrics was used to estimate the time since death in the vitreous humor and to collect a databank of samples derived from postmortem examinations after medico–legal evaluation. In this study, contaminated and uncontaminated specimens with tissue fragments were included in order to develop a classification model to predict time of death based on partial least squares discriminant analysis (PLS-DA) that was as robust as possible. Results demonstrate the possibility to correctly predict the PMI even in contaminated samples, with an accuracy not lower than 70%. In addition, the correlation coefficient of the measured versus predicted outcomes was found to be 0.9978, confirming the ability of the model to extend its feasibility even to such situations involving contaminated vitreous humor.

scholarly journals Single-phase determination of calcium and magnesium in biodiesel using smartphone-based digital images

Fuel ◽  
2022 ◽  
Vol 307 ◽  
pp. 121837
Author(s):  
Samara Soares ◽  
Gabriel M. Fernandes ◽  
Liz M.B. Moraes ◽  
Alex D. Batista ◽  
Fábio R.P. Rocha
Keyword(s):  
Single Phase ◽  
Digital Images ◽  
Phase Determination ◽  
Calcium And Magnesium

Chromatographic determination of drugs of abuse in vitreous humor using solid-phase extraction

2012 ◽  
Vol 33 (8) ◽  
pp. 740-745 ◽  
Author(s):  
Purificación Fernández ◽  
Santiago Seoane ◽  
Cristina Vázquez ◽  
María Jesús Tabernero ◽  
Antonia M. Carro ◽  
...  
Keyword(s):  
Solid Phase Extraction ◽  
Drugs Of Abuse ◽  
Solid Phase ◽  
Chromatographic Determination ◽  
Vitreous Humor ◽  
Phase Extraction

Polarographic determination of calcium and magnesium

The Analyst ◽  
1969 ◽  
Vol 94 (1117) ◽  
pp. 269 ◽  
Author(s):  
B. Fleet ◽  
Soe Win ◽  
T. S. West
Keyword(s):  
Polarographic Determination ◽  
Calcium And Magnesium

LC-ESI-MS/MS on an ion trap for the determination of LSD, iso-LSD, nor-LSD and 2-oxo-3-hydroxy-LSD in blood, urine and vitreous humor

2006 ◽  
Vol 121 (4) ◽  
pp. 259-265 ◽  
Author(s):  
Donata Favretto ◽  
Giampietro Frison ◽  
Sergio Maietti ◽  
Santo Davide Ferrara
Keyword(s):  
Ion Trap ◽  
Vitreous Humor ◽  
Esi Ms
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