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Bebauungsplaene Eppelborn/Wiesbach - Auf_dem_Echer_I_BA

Bebauungspläne und Umringe der Gemeinde Eppelborn Ortsteil Wiesbach (Saarland):Bebauungsplan "Auf_dem_Echer_I_BA" der Gemeinde Eppelborn, Ortsteil Wiesbach

Bebauungsplaene Eppelborn/Wiesbach - Gewerbegebiet_Echer_I_BA

Bebauungspläne und Umringe der Gemeinde Eppelborn Ortsteil Wiesbach (Saarland):Bebauungsplan "Gewerbegebiet_Echer_I_BA" der Gemeinde Eppelborn, Ortsteil Wiesbach

Bebauungsplaene Eppelborn/Wiesbach - Gewerbegebiet_Echer_II_BA

Bebauungspläne und Umringe der Gemeinde Eppelborn Ortsteil Wiesbach (Saarland):Bebauungsplan "Gewerbegebiet_Echer_II_BA" der Gemeinde Eppelborn, Ortsteil Wiesbach

Toxicological basic data for the derivation of EU-LCI values for 5 substances from building products

The subject of this project was the preparation of substance reports for the following substances: 2-phenylpropene (CAS No. 98-83-9), vinyl toluene (mixture of o-, m-, p- and isomers) (CAS No. 611-15- 4, 100-80-1, 622-97-9, 25013-15-4), n-heptane (CAS No. 142-82-5), hexylene glycol (CAS No. 107-41-5) and tripropylene glycol monomethyl ether (CAS No. 20324-33-8, 25498-49-1). For these substances, the toxicological data basis were researched, compiled and evaluated, and EU-LCI values were proposed. The EU-LCI values form the basis for assessing the health effects of emissions from construction products and allow the harmonisation of the health assessment of construction product emissions throughout Europe. The final EU-LCI values are set by the EU-LCI Working Group, a  group of experts from ten European countries, and may differ from the proposals contained in this report. The EU-LCI Working Group is currently developing a harmonised European list of substances and their associated emission limits (EU-LCI values). The substance reports developed within this project support and accelerate this process. Veröffentlicht in Texte | 91/2018.

Toxicological basic data for the derivation of EU-LCI values for five substances from building products

The subject of this project was the preparation of substance reports for the following compounds: dipropylene glycol mono n(t)-butyl ether (CAS No. 29911-28-2, 35884-42-5, 132739-31-2), 2-(2-hexyloxyethoxy)-ethanol (CAS No. 112-59-4), 1-propenylbenzene (CAS No. 637-50-3, 873-66-5), dipropylene glycol mono methyl ether acetate (CAS No. 88917-22-0) and hydroxyacetone (CAS No. 116-09-6). For these substances, the toxicological data basis were researched, compiled and evaluated, and EU-LCI values were proposed. The EU-LCI values form the basis for assessing health effects of emissions from construction products and allow the harmonisation of the health assessment of construction product emissions throughout Europe. The final EU-LCI values are set by the EU-LCI Working Group, a group of experts from ten European countries, and may differ from the proposals contained in this report. The EU-LCI Working Group is currently developing a harmonised European list of substances and their associated emission limits (EU-LCI values). The substance reports developed within this project support and accelerate this process. Veröffentlicht in Texte | 16/2020.

Toxicological basic data for the derivation of EU-LCI values for 1,4-cyclohexane dimethanol, 3-methoxybutanol, 1,2-propylene glycol n-propyl ether, methyl formate and butyl formate

The subject of this project was the preparation of substance reports for five substances relevant for building products emissions. For these substances, the toxicological data basis was researched, compiled and evaluated, and EU-LCI values were proposed. The EU-LCI values allow the harmonisation of the health assessment of building products emissions throughout Europe. The EU-LCI Working Group is currently developing a harmonised European list of substances and their associated emission limits. The substance reports developed within this project support and accelerate this process. The project outcome is relevant for all stakeholder involved in the topic of building products emissions. Veröffentlicht in Texte | 125/2021.

Per- and polyfluoroalkyl substances in the German environment – Levels and patterns in different matrices

Kotthoff, Matthias; Fliedner, Annette; Rüdel, Heinz; Göckener, Bernd; Biegel-Engler, Annegret; Koschorreck, Jan Science of The Total Environment 740 (2020), 20. Oktober 2020, 140116; online 10. Juni 2020 Per- and polyfluoroalkyl substances (PFAS) in the environment mostly originate from emissions of previously unregulated PFAS. However, there are also many documented incidents of accidental releases. To track such releases, it is essential to distinguish between typical background contamination and legally relevant incidents. This requires a comprehensive overview of all PFAS present in the environment, which is currently only possible to a limited extent due to the large variety of individual compounds. In the present study, a multimethod for capturing 41 PFAS including perfluoroalkyl acid (PFAA) precursors is introduced. The applicability of the method was tested on terrestrial, freshwater and marine samples from the German Environmental Specimen Bank (ESB), thereby providing a rough overview of PFAS contamination in German environment. Special focus was put on soil samples from ESB sites across Germany in comparison to soil samples from a polluted site in south-west Germany. The method was successfully applied to environmental samples. In total, 31 PFAS were detected, among them PFAA precursors and fluorinated ethers. Substance patterns differed between sites and matrices. In ESB soil samples from 2014 (n = 11), the sum of all captured PFAS ranged between 0.75 and 19.5 μg kg −1 dry weight (dw), while concentrations between 416 μg kg −1 and 3530 μg kg −1 were detected in samples from the incident site (n = 10). In other matrices, total PFAS concentrations were magnitudes lower. Highest concentrations were observed for PFOS in bream livers from the Saale (226 μg kg −1 ). Given the heterogeneous patterns, it will require further broadly-based monitoring data to allow for a solid estimation of relevant background levels. The data provided here may support the differentiation between background levels and hotspot contaminations. doi: 10.1016/j.scitotenv.2020.140116

Determination of halogenated flame retardants by GC-API-MS/MS and GC-EI-MS: a multi-compound multi-matrix method

Neugebauer, Frank; Dreyer, Annekatrin; Lohmann, Nina; Koschorreck, Jan Analytical and Bioanalytical Chemistry (2017); online 13. Dezember 2017 The extensive application of halogenated flame retardants has led to their widespread distribution in the environment. Recently, concerns emerged regarding their potential persistence, (bio)accumulation, and/or toxicity. Particularly halogenated flame retardants based on norbornene structures, like Dechlorane Plus as well as other brominated PBDE replacements, generically called emerging, novel , or alternative flame retardants, are in the focus of interest. A comprehensive analytical method for the determination of 21 halogenated flame retardants (HFRs) of different substance classes (dechloranes, brominated aromates, brominated ethers, cyclic BFR) in a broad variety of matrices (tree leaves, fish fillet, birds eggs, suspended particles) was developed in order to assess their environmental levels as well as temporal trends, especially for the use within environmental specimen banks (ESBs). In addition to the alternative HFRs, a set of 24 PBDEs were measured in the same samples, however using GC-EI-MS for detection. Samples were extracted using accelerated solvent extraction (ASE) with dichloromethane:hexane (exception: soxhlet extraction for suspended particles) followed by a multi column clean-up. Quantification was performed by API-GC-MS/MS as a modern, gentle, and sensitive technique for simultaneous detection of compounds throughout a wide range of masses and fragmentation characteristics (exception: PBDE detection using GC-EI-MS). With the exception of BDE 209, instrumental precisions of target compounds ranged from 1% to 16 % (at levels of 2 pg injection -1 for HFR, 20 pg injection -1 for DBDPE, 7-36 pg injection -1 for PBDEs). Interday precisions of the entire analytical method including extraction and clean-up were mostly below 25% for all validation matrices at spiked levels of 100 pg sample -1 for HFR (DBDPE: 1000 pg sample -1 ) and 1200–6000 pg sample -1 for PBDEs. The majority of analytes were investigated with expanded measurement uncertainties of less than 50%. doi: 10.1007/s00216-017-0784-x

Halogenated flame retardants in tree samples applied as bioindicators for atmospheric pollution

Dreyer, Annekatrin; Neugebauer, Frank; Rüdel, Heinz; Klein, Roland; Lohmann, Nina; Rauert, Caren; Koschorreck, Jan Chemosphere (2018); online 7. Mai 2018 Coniferous shoots and deciduous tree leaf samples from 10 sites in Germany were taken in 2015 or 2016 within the German Environmental Specimen Bank sampling program and analysed for 24 polybrominated biphenyl ethers (PBDEs) and 19 additional halogenated flame retardants (HFRs). At one site, additional historic samples dating back till 2003 were also investigated. Samples were Soxhlet-extracted, cleaned-up by a non-destructive multi-step procedure involving gel permeation chromatography, and detected by GC-API-MS/MS as well as GC-MS. Besides PBDEs as classical HFRs, alternative HFRs such as Dechlorane Plus, DPTE, DBDPE, or ATE were region-wide observed demonstrating their widespread occurrence in the atmosphere. Highest concentrations in recent samples were found for DBDPE (<230–2760 pg g -1 dry weight (dw)) followed by DPTE (91–1540 pg g -1 dw), BDE209 (<156–461 pg g -1 dw), and BDE47 (<27–505 pg g -1 dw) or DP (31–122 pg g -1 dw). The overall uniform and widespread distribution as well as similar HFR levels and composition profiles observed in recent conifer shoots and corresponding deciduous tree leaves from the same area indicate a prolonged medium to long-range transport as sources. Furthermore, it is demonstrated that both tree types are generally suitable bioindicators for atmospheric pollution with HFRs, although accumulation may vary depending on HFR properties and accumulation period. The historic samples showed decreasing PBDE levels whereas no clear trend could be observed for other investigated HFRs at this site . doi:10.1016/j.chemosphere.2018.05.033

Chem-Org\PEG+DPM (hochrein)

Herstellung von hochreinem Polyethylen Glykol (PEG), (DPM (Dipropylen glykol monomethyl ether) subsumiert), PEG-Herstellung durch Polyaddition von Ethylenoxid in meist geringe Mengen Wasser enthaltenden Systemen mit Ethylenoxid als Startmolekül (nach #1); Ausbeute 95% (#2, S. 162), Nutzungsgrad 95%. Eigene Schätzung des Öko-Instituts zum Energiebedarf: nur für Pumpen (10kWh/t output). Auslastung: 5000h/a Brenn-/Einsatzstoff: Grundstoffe-Chemie gesicherte Leistung: 100% Jahr: 2005 Lebensdauer: 20a Leistung: 1t/h Nutzungsgrad: 95% Produkt: Grundstoffe-Chemie

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