The potentials and limitations of using neutron activation analysis data on human hair as a forensic evidence

Pillay, K.K.S.; Kuis, R. L.

doi:10.1007/bf02519507

Cited by 18 publications

(3 citation statements)

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“…Most commonly, a comparison of the morphological characteristics of a known and unknown hair sample can be used to determine if they may have originated from the same source, although the microscopic characteristics of hair are not considered to be unique to individuals [3,4]. Attempts to discriminate human hair through chemical analysis has included monitoring hair dye components [5], hair oxidation [6], hair proteins [7,8], and trace elements [9,10]. Hair analysis is conducted at different levels as gross, microscopic and molecular based.…”

Section: Study On Hair Morphology To Distinguish the Dominant Races In Malaysia For Forensic Investigationmentioning

confidence: 99%

Study on Hair Morphology to Distinguish the Dominant Races in Malaysia for Forensic Investigation

T¹,

Roy²

2015

Journal of Forensic Science & Criminology

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Hair evidence is one of the most common types of evidence encountered in criminal investigations. The present preliminary study is aimed to investigate the racial discrimination through hair morphology viz. inner cuticle margin, cuticle thickness and medulla pattern among Malay, Chinese and Indian in Malaysia. Following standard procedure, a total of 180 volunteers' head hair samples, each 60 (30 males, 30 females) from consented Malay, Chinese and Indian, have been collected for analysis. Approximately 1 cm length of each hair was cut and suitably mounted using clean microscope slide, cover slide and mounting medium for analysis. The prepared hair slides were subjected to microscopic examination under different magnifications viz. 40X, 100X and 400X. The result of the hair investigation showed marked differences in hair morphology among the three races. The frequency and percentage of distribution of different hair morphology were tabulated and also presented in the form of bar graphs. This pilot study, the first of its kind in Malaysia provided a promising result in hair investigation showing racial discrimination among dominant races in Malaysia and the result of the investigation can be very well used in crime investigation.

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Section: Study On Hair Morphology To Distinguish the Dominant Races In Malaysia For Forensic Investigationmentioning

confidence: 99%

Study on Hair Morphology to Distinguish the Dominant Races in Malaysia for Forensic Investigation

T¹,

Roy²

2015

Journal of Forensic Science & Criminology

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“…In contrast, differentiating human hair samples by their chemical composition is not as common. Previous attempts have involved monitoring hair dye components [1,2], hair oxidation [3,4], hair proteins [5 -8], trace elements [9,10], or identifying gender based on the presence of Y chromosomes in root sheath cells [11,12]. These techniques have met with limited success and, to date, have not attained wide acceptance.…”

Section: Introductionmentioning

confidence: 99%

Forensic analysis of hair surface components using off‐line supercritical fluid extraction and large volume injection

Goodpaster

Bishop

Benner³

2003

J of Separation Science

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Forensic analysis of hair surface components using off-line supercritical fluid extraction and large volume injectionThe analysis of organic material on the surface of human hair may indicate various subject characteristics such as age, race, gender, or the use of hair products. In addition, comparisons of hair chemical composition may be used to assess the potential for a common origin between a known and unknown sample. However, evidentiary hair samples are often extremely small, necessitating highly sensitive extraction and analysis techniques. In this communication, off-line supercritical fluid extraction (SFE) followed by gas chromatography/mass spectrometry (GC/MS) using large volume injection (LVI) is demonstrated as a potential method for extracting and analyzing hair surface components. The retention gap technique was used to achieve large volume injections, allowing up to 30 lL of the off-line extracts to be analyzed. Subsequent chemical analysis by GC/MS identified various natural components on the hair surface such as saturated and unsaturated free fatty acids, squalene, and cholesterol. Overall, off-line SFE was quite efficient, allowing the measurement of surface components of sample amounts ranging from 0.22 mg to 0.24 mg. In addition, derivatization of free fatty acids using a silylating agent increased both chromatographic resolution and sensitivity. Results from two hair samples are discussed to demonstrate the technique.

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“…Η ανάλυση ιχνοστοιχείων στα μαλλιά μπορεί να χρησιμοποιηθεί στις ιατροδικαστικές επιστήμες [306][307][308], ως ένας δείκτης περι βαλλοντικής μολύνσεως [308,309], λόγω της πορώδους φύσεως και της ικανότητας απορροφήσεως ιόντων [281] και ως μέσον ελέγχου της καταστάσεως ιχνοστοιχείων στον άνθρωπο [280,308,310]. Επειδή τα μαλλιά αναπτύσονται με μια ταχύτητα 10-12 cm ανά έτος, ένα 10 cm δείγμα μαλλιών θα αντιπροσωπεύει τη μέση συγκέντρωση ιχνοστοιχείων για ένα έτος [311].…”

Section: συγκέντρωση σεληνίου στα μαλλιάunclassified

Περιεκτικοτητα Σεληνιου Στα Τροφιμα Και Βιολογικα Δειγματα Και Η Σχεση Τους Με Τον Καρκινο

Μπρατάκος¹

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ΣΤΗΝ ΕΡΓΑΣΙΑ ΚΑΛΥΠΤΟΝΤΑΙ ΤΑ ΕΞΗΣ: -ΚΡΙΤΙΚΗ ΜΕΛΕΤΗ ΦΘΟΡΙΣΜΟΜΕΤΡΙΚΟΥ ΠΡΟΣΔΙΟΡΙΣΜΟΥ ΣΕΛΗΝΙΟΥ ΣΕ ΕΠΙΠΕΔΑ ΜΙΚΡΟΠΟΣΟΤΗΤΩΝ . -ΠΕΡΙΕΚΤΙΚΟΤΗΤΑ ΣΕ ΣΕΛΗΝΙΟ ΠΟΣΙΜΟΥ ΝΕΡΟΥΑΠΟ 64 ΠΡΩΤΕΥΟΥΣΕΣ ΝΟΜΩΝ ΚΑΙ ΜΕΡΙΚΩΝ ΚΩΜΟΠΟΛΕΩΝ. -ΠΕΡΙΕΚΤΙΚΟΤΗΤΑ ΣΕ ΣΕΛΗΝΙΟ ΤΟΥ ΣΙΤΟΥ, ΚΡΙΘΗΣ, ΒΡΩΜΗΣ, ΣΙΚΑΛΕΩΣ ΚΑΙ ΑΡΑΒΟΣΙΤΟΥ ΑΠΟ ΔΙΑΦΟΡΑ ΜΕΡΗ ΤΗΣ ΕΛΛΑΔΑΣ. ΣΧΕΔΙΑΣΜΟΣ ΓΕΩΒΟΤΑΝΙΚΟΥ ΧΑΡΤΗ ΤΗΣ ΕΛΛΑΔΑΣ ΓΙΑ ΤΟ ΣΕΛΗΝΙΟ. -ΠΕΡΙΕΚΤΙΚΟΤΗΤΑ ΣΕ ΣΕΛΗΝΙΟ 13 ΚΑΤΗΓΟΡΙΩΝ ΤΡΟΦΙΜΩΝ (315 ΕΙΔΗ ΤΡΟΦΙΜΩΝ). ΥΠΟΛΟΓΙΣΜΟΣ ΗΜΕΡΗΣΙΑΣ ΛΗΨΕΩΣ ΣΕΛΗΝΙΟΥ ΑΠΟ ΤΟΥΣ ΕΛΛΗΝΕΣ ΑΠΟ ΤΗΝ ΤΡΟΦΗ. -ΑΠΩΛΕΙΕΣ ΣΕΛΗΝΙΟΥ ΚΑΤΑ ΤΟ ΜΑΓΕΙΡΕΜΑ ΤΩΝ ΤΡΟΦΙΜΩΝ. -ΠΡΟΣΔΙΟΡΙΣΜΟΣ ΤΗΣ ΚΑΤΑΣΤΑΣΕΩΣ ΤΟΥ ΣΕΛΗΝΙΟΥ ΤΩΝ ΥΓΙΩΝ ΕΛΛΗΝΩΝ (ΗΛΙΚΙΑΣ 0>70 ΕΤΩΝ) ΜΕ ΠΡΟΣΔΙΟΡΙΣΜΟ ΤΗΣ ΠΕΡΙΕΚΤΙΚΟΤΗΤΑΣ ΣΕ ΣΕΛΗΝΙΟ ΤΩΝ ΑΙΜΑ, ΟΥΡΩΝ ΜΑΛΛΙΩΝ ΚΑΙ ΝΥΧΙΩΝ. -ΠΡΟΣΔΙΟΡΙΣΜΟΣ ΤΗΣ ΚΑΤΑΣΤΑΣΗΣ ΤΟΥ ΣΕΛΗΝΙΟΥ ΤΩΝ ΚΑΡΚΙΝΟΠΑΘΩΝΕΛΛΗΝΩΝ (ΗΛΙΚΙΑΣ 0>70 ΕΤΩΝ) ΜΕ ΠΡΟΣΔΙΟΡΙΣΜΟ ΤΗΣ ΠΕΡΙΕΚΤΙΚΟΤΗΤΑΣ ΣΕ ΣΕΛΗΝΙΟ ΤΩΝΑΙΜΑ, ΟΥΡΩΝ ΚΑΙ ΜΑΛΛΙΩΝ ΚΑΘΩΣ ΚΑΙ ΚΑΡΚΙΝΙΚΩΝ ΚΑΙ ΣΕ ΓΕΙΤΟΝΙΚΟΥΣ, ΠΡΟΦΑΝΩΣ ΥΓΙΕΙΣ, ΙΣΤΟΥΣ.

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The potentials and limitations of using neutron activation analysis data on human hair as a forensic evidence

Cited by 18 publications

References 13 publications

Study on Hair Morphology to Distinguish the Dominant Races in Malaysia for Forensic Investigation

Study on Hair Morphology to Distinguish the Dominant Races in Malaysia for Forensic Investigation

Forensic analysis of hair surface components using off‐line supercritical fluid extraction and large volume injection

Περιεκτικοτητα Σεληνιου Στα Τροφιμα Και Βιολογικα Δειγματα Και Η Σχεση Τους Με Τον Καρκινο

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