The use of filtered light for the evaluation of writing inks analyzed using thin layer chromatography

Thin layer chromatography (TLC) is a scientific methodology that can be used to compare and characterize ink formulations. Occasionally, when evaluating chromatographic profiles on a TLC plate with ambient light, different ink formulations, or the same inks from different batches, may appear indistinguishable. The use of filtered light can be very effective to illuminate characteristics that are not readily apparent with ambient light. There are a diverse number of components commonly found in writing inks, and it may be that some of them respond to particular wavelengths of energy that are not visible to the unaided eye (i.e., colorless). There has been very little information published that addresses the use of filtered light for evaluating TLC plates. Twenty-nine ballpoint writing ink samples were selected for TLC analysis. Further evaluation using an alternate light source, coupled with the appropriate filter, proved to be an effective means for definitive discrimination in some cases.     

Results and lessons from Canada's PS2000

Canada has been a world leader in administrative reform, eager to experiment during turbulent times in public administration. Public Service 2000, an attempt to instill the Canadian public service into a people- and results-oriented management culture, has been widely heralded as among the boldest of recent Canadian administrative reforms. Results from implementing PS2000 were expected within a decade of its 1990 launch. Halfway through that timeframe, the results are surprising, complex, contradictory and paradoxical. For example, in the second year of implementation, the longer term solutions of PS2000 conflicted with a financial crisis demanding fast results, and PS2000 principles, throughout implementation, contradicted certain traditional public service values. Reflecting on their experience, individuals who participated in PS2000 confirmed lessons in the extant literature, and suggested lessons specific to Canadian circumstances. PS2000 has been an unavoidable and much-needed effort to reform the Canadian public service, though perhaps inevitably it fell short of expectation. Yet, inside opinion remains mixed, seeking rationalist explanations, and expressing dissatisfaction over the progress of implementation. PS2000 has been absorbed into a much broader plan to reinvent federal government administration and the role of the state in Canadian society. Continuing difference of opinion may well call for a more fundamental change in administrative and managerial doctrine, especially with respect to launching future comprehensive administrative reform projects.     

The identification of 2-phenoxyethanol in ballpoint inks using gas chromatography/mass spectrometry--relevance to ink dating

Developing and implementing a generally accepted procedure for the dating of ink found on documents using dynamic approaches has been a very formidable undertaking by forensic document examiners. 2-Phenoxyethanol (PE), a common volatile organic compound found in ballpoint inks, has been recognized for over a decade as a solvent that evaporates as ink ages. More recently, investigations have focused on the solvent loss ratio of PE prior to and after heating. To determine how often PE occurs in ink formulations, the authors analyzed 633 ballpoint inks utilizing a gas chromatograph/mass spectrometer. 2-Phenoxyethanol was identified in 85% (237/279) and 83% (293/354) of black and blue inks, respectively.