Impurity profiling of ecstasy tablets seized in Hong Kong by gas chromatography-mass spectrometry

In Hong Kong, ecstasy tablets are more commonly known as "Fing Tau Yuen", literally meaning "Shake Head Pills". The tablets contain mainly amphetamine-type stimulants (ATS) including 3,4-methylenedioxymethamphetamine (MDMA), 3,4-methylenedioxyamphetamine (MDA), methamphetamine (MA) and/or ketamine. Adulterant such as caffeine was also detected in the tablets. This paper reports a study on the impurity profiles of ecstasy tablets from 89 seizures in Hong Kong from 2002 to early 2004. Tablet samples were extracted by diethyl ether under alkaline condition and then analyzed by gas GC-MS. The chromatograms obtained were compared. A total of 19 identified impurities were selected as markers for impurity profiling. They are different precursors, intermediates and by-products. The data matrices were examined by hierarchical cluster analysis (HCA), and then the ecstasy tablets were classified into different groups. Cluster analysis of ecstasy tablets is shown to be capable of providing intelligence on clandestine laboratory networks.     

Multidimensional Impulsive Personality Traits Mediate the Effect of Parent Substance Use Disorder on Adolescent Alcohol and Cannabis Use

Journal of Youth and Adolescence - Theory suggests that behavioral undercontrol mediates the effect of parental substance disorder on offspring substance use, but no studies have tested...     

Democracy promotion and ODA: a comparative analysis

Scholars of democracy promotion foreign aid often claim it has substantially increased, yet they shy away from explaining by how much, nor investigate comparative trends in giving. This paper attempts to fill this void by addressing the following: (1) Has democracy promotion aid increased since the end of the Cold War? (2) Has the ‘assumed’ trend of increasing aid persevered through the difficulties encountered in democratizing Iraq? (3) Did aid increase from states that supported the invasion of Iraq compared to states that did not? The author's analysis purports that the answer is yes to the first two, yet it is harder to draw conclusions regarding Iraq. Another finding, contrary to claims in the scholarly literature, in terms of percentage and overall spending, the USA gives more democracy promotion aid than the EU. The author hopes this work stimulates research into the role of democracy promotion in the Arab Spring to consider historical trends in giving.