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Beckett N.M.,Griffith University | Cresswell S.L.,Griffith University | Grice D.I.,Griffith University | Carter J.F.,Queensland Health Forensic and Scientific Services
Science and Justice | Year: 2015

This paper demonstrates the use of isotopic analysis of 23 benzylpiperazine (BZP) and trifluoromethylphenylpiperazine (TFMPP) containing tablets seized on two independent occasions by the Northern Territory (NT) Police, Australia. Isolation (High Performance Liquid Chromatography (HPLC)) of BZP and TFMPP followed by Isotope Ratio Mass Spectrometry (IRMS) (carbon and nitrogen stable isotopes) analysis was performed. Results are presented for δ13C and δ15N values of the respective piperazine analogues. The isotopic data and statistical analysis suggest a common source of manufacture for the BZP samples but suggest different sources for the TFMPP isolated from the corresponding BZP containing tablets investigated. The use of IRMS in this case study demonstrated the ability to obtain information regarding the BZP/TFMPP sources unattainable via conventional chemical analysis. © 2014 Forensic Science Society. Source

Francis J.R.,Paediatric Infection Management Service | Nourse C.,Paediatric Infection Management Service | Nourse C.,University of Queensland | Vaska V.L.,Paediatric Infection Management Service | And 3 more authors.
Pediatrics | Year: 2014

Human infection with Australian Bat Lyssavirus is extremely rare and has not previously been reported in a child. We describe a fatal case of Australian Bat Lyssavirus in an 8-year-old child, and review the literature pertaining to the diagnosis and management of lyssavirus infection with consideration of its applicability to this emerging strain. © 2014 by the American Academy of Pediatrics. Source

Kennedy K.,University of Queensland | Hawker D.W.,Griffith University | Bartkow M.E.,University of Queensland | Carter S.,Queensland Health Forensic and Scientific Services | And 2 more authors.
Environmental Pollution | Year: 2010

Performance reference compound (PRC) derived sampling rates were determined for polyurethane foam (PUF) passive air samplers in both sub-tropical and temperate locations across Australia. These estimates were on average a factor of 2.7 times higher in summer than winter. The known effects of wind speed and temperature on mass transfer coefficients could not account for this observation. Sampling rates are often derived using ambient temperatures, not the actual temperatures within deployment chambers. If deployment chamber temperatures are in fact higher than ambient temperatures, estimated sampler-air partition coefficients would be greater than actual partition coefficients resulting in an overestimation of PRC derived sampling rates. Sampling rates determined under measured ambient temperatures and estimated deployment chamber temperatures in summer ranged from 7.1 to 10 m3 day-1 and 2.2-6.8 m3 day-1 respectively. These results suggest that potential differences between ambient and deployment chamber temperatures should be considered when deriving PRC-based sampling rates. © 2009 Elsevier Ltd. All rights reserved. Source

Taylor C.,Queensland Health Forensic and Scientific Services | Playford E.G.,Princess Alexandra Hospital | Playford E.G.,University of Queensland | McBride W.J.H.,James Cook University | And 2 more authors.
Emerging Infectious Diseases | Year: 2012

To better understand the natural history of Hendra virus infection and its tendency to relapse, 2 humans infected with this virus were monitored after acute infection. Virus was not detected in blood samples when patients were followed-up at 2 and 6 years. Thus, no evidence was found for prolonged virus shedding. Source

Desbrow B.,Griffith University | Henry M.,Queensland Health Forensic and Scientific Services | Scheelings P.,Queensland Health Forensic and Scientific Services
Journal of Food Composition and Analysis | Year: 2012

A cross-section of Australian " Espresso/short black" coffee and coffee-flavoured milk samples were purchased and analysed for their caffeine content using micellar electrokinetic capillary chromatography (MEKC). Coffees were collected using convenience cluster sampling across four major cities. Packaged coffee-flavoured milks were collected from national grocery distributors. In all, 131 espresso samples and 20 coffee-flavoured milks were analysed. The mean (±SD) quantity of caffeine from espresso coffee was 107. ±. 37. mg/serving with a concentration of 2550. ±. 1030. mg/L. The mean (±SD) quantity of caffeine from coffee-flavoured milk was 99. ±. 50. mg/carton with a concentration of 193. ±. 90. mg/L. There was considerable variation in caffeine content across both categories and within the same espresso brand purchased at different locations. In total, 42 samples (27.5%) contained ≥120. mg per serving of caffeine, and 20 samples (13.1%) exceeded 165. mg per serving.The expanded caffeine data supports our original findings which indicated that the probability of consumer exposure to high caffeine doses from popular coffee beverages in Australia is greater than previously reported. © 2012 Elsevier Inc. Source

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