In addition, its quasi-non-destructive character is especially welcome for this type of sample.
The main forensic applications of LA-ICP-MS have been developed for glass and paint samples. However, applications to other samples have also been reported [e.g., documents (ink and paper), fibers, cannabis, gems, Australian ocher and porcelain, brick stones, and gold and silver]. In the forensic field, the adjustment of instrumental LY294002 nmr analytical parameters, the study of interferences produced by fractionation and polyatomic ions, and the statistical treatment of data are considered of great importance. This review is intended as a practical, useful guide to help forensic chemists incorporate this attractive, powerful technique into their
laboratories. (c) 2012 Elsevier Ltd. All rights reserved.”
“Background: The incidence of asthma morbidity and mortality is highest among minority inner-city populations. Among New York City’s
five boroughs, the Bronx has the highest rate of asthma-related hospitalizations and mortality. Outdoor air pollutants have been associated with increased asthma-related ED visits (AREDV) in this borough. Objective: To better understand the contribution of pollen and mold to asthma severity in the Bronx. Methods: The numbers of daily adult and pediatric AREDV and asthma-related hospitalizations (ARH) from 2001 to 2008 were obtained from two Bronx hospitals. AREDV and ARH data were acquired retrospectively through the Clinical Looking Glass data analysis software. Daily counts for tree, grass and weed pollen and mold spore counts from March 2001 to October 2008 were obtained
from the Armonk counting station. All data were statistically analyzed DMH1 nmr and graphed as daily values. Results: There were a total of 42 065 AREDV and 10 132 ARH at both Bronx hospitals. There were spring and winter click here peaks of increased AREDV. Tree pollen counts significantly correlated with total AREDV (rho = 0.3639, p < 0.001), and pediatric (rho = 0.33, p < 0.001) and adult AREDV (rho = 0.28, p < 0.001). ARH positively correlated with tree pollen counts (Spearman rho = 0.2389, p < 0.001). Conclusions: There exists a significant association between spring AREDV and ARH and tree pollen concentrations in a highly urbanized area such as the Bronx. Early anticipation of spring pollen peaks based on ongoing surveillance could potentially guide clinical practice and minimize asthma-related ED visits in the Bronx.”
“The vapor pressures (VPs) of many explosive compounds are extremely low, so determining accurate values proves difficult. Many researchers, using a variety of methods, have measured and reported the VPs of explosive compounds at single temperatures, or as a function of temperature using VP equations. There are large variations in reported VPs for many of these compounds, and some errors exist within individual papers.
This article provides a review of explosive VPs and describes the methods used to determine them.