Development and evaluation of a standard method for the quantitative determination of elements in float glass samples by LA-ICP-MS

Forensic analysis of glass samples was performed in different laboratories within the NITE-CRIME (Natural Isotopes and Trace Elements in Criminalistics and Environmental Forensics) European Network, using a variety of Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS) systems. The main objective of the interlaboratory tests was to cross-validate the different combinations of laser ablation systems with different ICP-MS instruments. A first study using widely available samples, such as the NIST SRM 610 and NIST SRM 612 reference glasses, led to deviations in the determined concentrations for trace elements amongst the laboratories up to 60%. Extensive discussion among the laboratories and the production of new glass reference standards (FGS 1 and FGS 2) established an improved analytical protocol, which was tested on a well-characterized float glass sample (FG 10-1 from the BKA Wiesbaden collection). Subsequently, interlaboratory tests produced improved results for nearly all elements with a deviation of < 10%, demonstrating that LA-ICP-MS can deliver absolute quantitative measurements on major, minor and trace elements in float glass samples for forensic and other purposes.     

Auswirkungen des Umweltrechts auf eine nachhaltige Regionalentwicklung*

Das Umweltrecht nimmt in vielfältigen Formen und Verfahren Einfluss auf die Regionalplanung als (Haupt-)Instrument nachhaltiger Regionalentwicklung. Der Beitrag beleuchtet dies unter rechtlichen Aspekten und bezieht hierzu Stellung. Die Kritik richtet sich u. a. auf die Heterogenität umweltrechtlicher Agenden und die eingeschränkte Sanktionierung von Verstößen gegen Vorgaben des Umweltrechts. * Schriftliche Fassung eines Vortrags auf dem Kongress Steuerungsimpulse für eine nachhaltige Regionalentwicklung am 24./25. 11. 2004 in Greifswald. Verf. ist Inhaber eines Lehrstuhls für öffentliches Recht und Geschäftsführender Direktor des Ostseeinstituts für Seerecht, Umweltrecht und Infrastrukturrecht, Universität Rostock.     

Determination of lysergic acid diethylamide in body fluids by high-performance liquid chromatography and fluorescence detection--a more sensitive method suitable for routine use

A new method for determination of lysergic acid diethylamide (LSD) in body fluids by high-performance liquid chromatography and fluorescence detection was developed based on previously published methods. The new method is suitable for confirmation of samples tested positive by immunoassay, avoiding loss of LSD by absorption to surfaces. The reduced loss of LSD results in improved sensitivity. This is achieved by adding ethylene glycol to the samples, which cover glass surfaces. This principle can similarly be used to improve analysis of other drugs. Body fluids for analysis included urine and whole blood. An internal standard was applied for quantification of LSD. The new method offers satisfying precision data and has a detection limit of less than 0.05 ng/nL.     

Neck extension as a cause of SIDS

The intradural sagittal diameter at the second cervical vertebra (SD/C2) of 62 SIDS cases was measured myelographically. This SD/C2 proved to be dependent on body size, body weight, and age. A clear, age-dependent difference is to be found in the primarily narrow spinal canal. This parameter (SD/C2), which is more precisely defined in adults on the basis of clinical, radiological, and autopsical findings is assumed to have the value of 0.5 cm in the first 2 months, 0.6 cm in the third month, and 0.65 cm in the fourth month. The resulting potential danger to infants is dependent upon their position. The SD/C2, was significantly decreased in extension as compared to a neutral posture. With consideration of the primarily narrow spinal canal in the infant, there is, according to our measurements, a potential hazard for the infant in any further, significant shortening of the SD/C2. This is independent of the width of the spinal canal under maximal extension. We found individual cases in which the SD/C2 was decreased by almost 50% from the normal value in neutral position. No correlation was found between the primary width of the spinal canal and the degree of luminal reduction upon extension.     

Flourishing retail in the post-soviet sphere? Potentials and constraints of small-scale retail activities in rural Kyrgyzstan

The demise of the USSR led to the collapse of its centrally organised retail system. With this collapse the supply of consumer goods dried up, especially in the remote parts of the former USSR. At the same time the advent of capitalism offered a new institutional framework for independent retail activities. In the Kyrgyz Republic, where the economic liberalisation followed strictly the Washington Consensus, a large number of small shops emerged in both urban and rural areas. This study analyses the reasons for this boom in retail start-ups as well as the constraints the mainly inexperienced merchants encounter. As will be shown, any success in retail activities depends greatly on the performance of other economic sectors. The main goal of starting a retail business is to minimize risks within the overall livelihood strategies of households in rural Kyrgyzstan.