S. Schwartz

Learn More
The notification of new chemicals in the European Union requires a risk assessment. A Technical Guidance Document (TGD) was prepared for assistance. The TGD proposes QSARs, regressions and models from various sources. Each method has its own range of applicability and its own restrictions. Regressions used in the assessment of indirect human exposure have a(More)
Cover: Color composite image of processed Landsat Thematic Mapper image recorded September 14, 1989 over the central Amazon River approximately 50 km upstream from the town of C-bidos and 650 km downstream from the town of Manaus. The record flood of 1989 has receded approximately 2 m, the floodplain is draining, and flow is from left to right (west to(More)
Regional PECs (Potential Environmental Concentrations) calculated with the software EUSES were compared with measured values using different emission and environmental distribution scenarios. The environmental data set recommended in EUSES (default data set) represents a generic standard region. In different scenarios the parameters of the generic region(More)
An evaluation of the software quality of EUSES 1.00 (European Union System for the Evaluation of Substances) was carried out. Quality criteria for software products for the risk assessment of chemicals were developed. They were derived from common standards (described in ISO/IEC 12119), publications, and newly established requirements. Thus, a compilation(More)
The bibliometric indicators currently used to assess scientific production have a serious flaw: a notable bias is produced when different subfields are compared. In this paper we demonstrate the existence of this bias using the impact factor (IF) indicator. The impact factor is related to the quality of a published article, but only when each specific(More)
The interdependencies of parameters applied in the models of EUSES are visualised in a directed connectivity graph. The parameters (inputs, defaults, state variables, outputs) are represented by boxes (nodes) and their relations by lines (edges). The visualisation, on the one hand, clarifies the complexity of the models in EUSES and, on the other hand,(More)
The model system CemoS(1) (Chemical Exposure Model System) was developed for the exposure prediction of hazardous chemicals released to the environment. Eight different models were implemented involving chemicals fate simulation in air, water, soil and plants after continuous or single emissions from point and diffuse sources. Scenario studies are supported(More)
By means of the environmental fate and distribution models laid down in the Technical Guidance Documents (TGD) and implemented in the European Union System for the Evaluation of Substances (EUSES) environmental concentrations of the polycyclic musk fragrance HHCB (1,3,4,6,7,8-hexahydro-4,6,6,7,8,8-hexamethyl-cyclopenta-[g]-2- benzopyrane; trade name: e.g.(More)
  • 1