A GC/MS study of the drying of ballpoint pen ink on paper

The determination of the age of an ink entry from a questioned document is often an essential problem and a controversial issue in forensic sciences. Therefore, it is important to understand the aging process of the different components found in ink. The aim of this work was to study the drying process of ballpoint ink, characterised by the disappearance of volatile solvents from the ink entry. Phenoxyethanol is of particularly high interest as it is found in more than 80% of the blue ballpoint pens at different concentrations. Liquid extraction followed by splitless gas chromatography/mass spectrometry in the selected ion mode was used to measure the quantitative decrease of solvents from ink entries made with a blue Parker ballpoint pen. Quantities of ethoxyethoxyethanol, dipropylene glycol, phenoxyethanol and phenoxyethoxyethanol were studied in ink entries up to 1.5 years old, thus allowing to calculate aging curves for this particular pen. The low quantities of solvents (in the microgram range for a 1 cm ballpoint entry) were found to decrease quickly after deposition of the ink on paper through the competitive processes of evaporation and diffusion. Losses of up to 75% of solvents were observed after a few seconds. The amount of ethoxyethanol stopped decreasing after about 10 days (quantities reached the nanogram range for a 1 cm ballpoint entry), while the aging curves of dipropylene glycol, phenoxyethanol and phenoxyethoxyethanol level off considerably after 2 weeks. It was observed that ethoxyethanol, dipropylene glycol and phenoxyethanol can also migrate from one sheet of paper to another if placed close enough (e.g. in a book or a stack of papers), therefore contamination from fresh ink strokes from other paper sheets has to be taken into account for those solvents. In this paper we demonstrate that differentiation between fresh ink (<2 weeks) and older inks is possible under laboratory storage conditions. For real cases samples, more parameters have to be studied and other possible pathways have to be considered.     

Keine Dereliktion von schlichten Miteigentumsanteilen an Liegenschaften

Eine Dereliktion schlichter Miteigentumsanteile an Liegenschaften kommt grunds?tzlich nicht in Betracht.     

From Benchmarking to Final Status? Kosovo and The Problem of an International Administration's Open-Ended Mandate

This contribution examines certain inherent shortcomings ofan ‘open-ended’ institution-building operation forwhich the future status of the entity in statu nascendi remainsundecided. It first addresses the policy of conditionality throughwhich Kosovo’s international administration attempts tomeasure the performance of local institutions against imported‘standards’. The external representation functionof an international administration acting on behalf of a non-stateterritorial entity, as an agent of necessity, is then analysed,considering recent and little-known developments and suggestingthat UNMIK’s practice supports the argument that ‘internationalized’territories possess limited legal personality. Turning ‘inward’to a sphere of domestic governance, the contribution highlightssome of the problems encountered with regard to the privatizationof public assets in Kosovo. Here, it argues that UNMIK is awkwardlycaught between the pursuit of both the interests of the territoryunder its administration and the collective interest of theorganized international community – two sets of interestswhich can collide head-on. The article concludes by suggestingthat an international territorial agent should not, as a rule,attempt to mediate a solution, but endeavour to represent theterritory in good faith.

‘You gave us freedom, but not a future’.¹

     

Betriebsanlagengenehmigung,Gutachten

Sachverst?ndigengutachten aus den Jahren 1999 bzw 2002 k?nnen für die Beurteilung der Genehmigungsf?higkeit einer Betriebsanlage im Jahre 2011 keine taugliche Grundlage bilden. Der zum Beweis des Vorliegens der Genehmigungsvoraussetzungen des § 77 GewO 1994 herangezogene Sachverst?ndige kann seiner Beurteilung vom Konsenswerber vorgelegte Messberichte zu Grunde legen, sofern er diese nach eigenverantwortlicher überprüfung für unbedenklich h?lt.