Evaluation of the Photodegradation of Crystal Violet upon Light Exposure by Mass Spectrometric and Spectroscopic Methods

Abstract: Crystal violet is a very common dye in ballpoint ink. Recent research suggests that the degradation of triarylmethane dyes gives an indication of the age of a ballpoint pen entry on a document. The main problem for the quantitative evaluation of the degradation is that it is highly dependent on the exposure to light. Moreover additional factors, such as additives and substrate play an important role in this process. The aim of this work is to compare the degradation pathways of the pure dye in water and ethanol upon exposure to xenon light by UV/VIS spectrophotometry and laser desorption ionization. Significant differences have been observed in the products and the kinetics of the degradation. N-demethylation, an expected decomposition process, was found to take place only in aqueous solution and kinetics calculations showed that the degradation occurred 2.5 times faster in ethanol compared to water. The degradation of crystal violet in inks from four ballpoint pens on paper was also studied for entries made over 2–3 years. It was observed that degradation reactions were quenched by the presence of another dye due to competitive absorption. It was also observed that the thickness of a stroke (concentration of ink) influenced the degradation process. In the absence of light only one ballpoint pen showed slight degradation. A better understanding of the influence of the paper, ink composition, and storage conditions is necessary to interpret correctly the age of an ink based on the degradation of dyes.     

From a threatening “Muslim migrant” back to the conspiring “West:” race,religion, and nationhood on Russian television during Putin’s third presidency

This article analyzes official discourse of the nation during Vladimir Putin’s third presidency, as reflected in Russian television coverage of Islam and migration. It argues that the replacement of earlier deliberately ambiguous definitions of Russian nationhood with clearly framed exclusive visions reflects the change in the regime’s legitimation strategy from one based on economic performance to one based on its security record. In this context, the systematic promotion of Russian ethno-nationalism for the purpose of achieving the regime’s general stability began not at the time of Crimea’s annexation, as it is often assumed, but at the time of Putin’s re-election amidst public protests in 2012. The goal of representing the authorities as attentive to public grievances in a society where opinion polls register high levels of xenophobia has prompted state-controlled broadcasters to use ethnoracial definitions of the nation that they had previously avoided. The media campaigns analyzed here also reflect abrupt changes in the precise identity of Russia’s main Others. Such instrumentally adopted sharp discursive swings are unlikely to constitute an appropriate tool for societal consensus management and for the achievement of political stability in the long term.     

Anti-immigrant mobilization in Russia's regions: local movements and framing processes

This article argues that increased anti-immigrant mobilization (the targeting of ethnic migrants to limit their rights and/or promote their resettlement) in Russia's regions is a consequence of local social movements adopting an anti-immigrant frame as part of their efforts to promote recruitment, acquire resources, and advance their movement's particular cause. Using the cases of Sverdlovsk's Gorod Bez Narkotikov (City Without Drugs) and Krasnodar's Cossack groups, it develops the argument and demonstrates specific ways in which an anti-immigrant frame is taken up by local movements. As a complement to existing studies of anti-immigrant sentiment or far right ideology, these cases highlight the practical politics of mobilizing support for anti-immigration causes in contemporary Russia.     

Broadening the Evaluation of Dispute Resolution: Context and Relationships Over Time

Evaluation of negotiation outcomes tends to focus on measurable, dyadic,short-term resolutions of conflict. We review current challenges to this traditionalmodel of the evaluation of dispute resolution outcomes, and we offerfour perspectives that can help address them. First, we advocate the needfor longitudinal studies of negotiations that incorporate disputant relationshipsbefore and after a particular negotiation. Second, we highlight theincreasing importance of third parties in resolving conflict. Third, we suggesta more comprehensive conception of parties, relationships andoutcomes in negotiations research. Finally, we advance an explicit incorporationof context and culture into dispute resolution research models.     

The Case of Weak Will and Wayward Desire

In this article, I confront Garvey’s argument that a weak-willed individual deserves partial excuse for trying to resist a strong desire that pushes him toward commission of a criminal act even though in the end he unreasonably abandons his resistance and commits the crime. I attempt to refute Garvey’s argument on two counts: one, I question whether the law should indeed provide mitigation to such an offender; and two, I argue that, even if it should, this mitigation may not come in the form of a partial defense. Defenses, even partial, are desert based, and there is nothing in Garvey’s offender’s circumstances that makes him less blameworthy for the crime he committed. A court may choose to treat such an offender more leniently but it should not be mandated to do so.

Regional governors and the Kremlin: the ongoing battle for power

This article examines the relationship between heads of regional administrations (governors) and the federal government in Russia since 1992. It looks at the methods with which governors have enhanced their powers vis-a-vis Moscow and at the policies of the federal authorities aimed at preserving some form of control over regional officials. The article argues that the gubernatorial elections of September 1996–March 1997, which gave almost all governors a popular mandate, will not considerably change the balance of power in center-periphery relations, despite fears to this effect among members of the Presidential Administration.     

Fatal workplace accident involving ethyl acetate: a distribution study

The tissue distribution of ethyl acetate and ethanol in a case of acute intoxication by ethyl acetate is presented. The victim was a 39-year-old man who was found dead lying on his abdomen in the interior of a tank containing ethyl acetate. Confirmation of ethyl acetate was obtained with static headspace gas chromatography with mass spectrometry. In blood, rapid biotransformation of ethyl acetate occurs by plasma esterases resulting in acetic acid and ethanol. Quantitation of ethyl acetate and ethanol in the postmortem samples was performed using static headspace gas chromatography with flame ionization detector. N-butanol was used as internal standard. Separation of the compounds was obtained on a Supelcowaxtrade mark-10 Fused Silica capillary column. The method was linear over the specific ranges investigated and showed a within-run accuracy of 99.8 and 101.0% and a precision of 0.5 and 2.0% for ethanol and ethyl acetate, respectively. The postmortem samples were analyzed in duplicate or triplicate. Coefficients of variation were < or =4.51% for ethyl acetate and < or =0.52% for ethanol. The low ratios of the ethyl acetate concentration to the ethanol concentration found in the postmortem tissue samples confirmed the rapid in vivo biotransformation of ethyl acetate. The highest concentration of ethyl acetate was found in the testis indicating that postmortem percutane absorption may have occurred. To our knowledge, this is the first reported tissue distribution study of ethyl acetate and ethanol in a case of acute intoxication by ethyl acetate.