TY - CONF A1 - Paul, Andrea A1 - Breitfeld, S. A1 - Sauer, Andreas A1 - Becker, Roland A1 - Kalbe, Ute A1 - Bremser, Wolfram A1 - Braun, Ulrike T1 - A Raman spectroscopic method for the monitoring of microplastics in soil N2 - Due to the increasing presence of microplastic particles (MP) in the Environment and the unknown risks arising from them, there is an urgent need for analytical methods that allow for an efficient identification and quantification of microplastics (MP), i.e. particles < 5 mm, in environmental samples. So far, mostly timeconsuming (micro) infrared or micro-Raman spectroscopic methods are applied. Here an faster alternative Approach is presented based on a Raman processspectrometer with fiber-optical probes in combination with multivariate data analysis. T2 - 12. Kolloquium Prozessanalytik CY - Berlin, Germany DA - 28.11.2016 KW - Raman spectroscopy KW - Microplastics KW - Soil KW - Chemometrics KW - PLS-DA PY - 2016 SP - P10, 59 EP - 60 AN - OPUS4-38392 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Esslinger, Susanne A1 - Becker, Roland A1 - Müller-Belecke, A. A1 - Jung, Christian A1 - Nehls, Irene T1 - Bioisomerization of HBCD: Results of feeding experiments with pure Gamma-HBCD enantiomers N2 - 1,2,5,6,9,10-hexabromocyclododecane (HBCD), a widely used flame retardant, is an ubiquitous contaminant in the environment. Still, only little is known about the distribution and behavior in the environment such as bioaccumulation or biotransformation of HBCD stereoisomers. In order to investigate enrichment and possible bioisomerization of HBCD stereoisomers, Mirror Carps were exposed to pure (+)- and (-)-γ-HBCD, randomly sampled after a predefined specific period and subjected to enantiomer-specific determination of α-, β-, and γ- HBCD. No evidence for the isomerization of HBCD stereoisomers was observed in Mirror Carp fillets. T2 - Dioxin 2009 - 29th International symposium on halogenated persistent organic pollutants / Organohalogen compounds CY - Beijing, China DA - 2009-08-23 PY - 2009 UR - http://www.dioxin20xx.org/pdfs/2009/09-103.pdf VL - 71 SP - 000487 EP - 000492 CY - Beijing, China AN - OPUS4-21187 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schultze, Karin A1 - Philipp, Rosemarie A1 - Redlich, Christel A1 - Dorgerloh, Ute A1 - Becker, Roland A1 - Win, Tin A1 - Nehls, Irene T1 - Development, preparation and certification of a reference material for the determination of chlorinated pesticides in soil T2 - Symposium "Reference Materials for Technologies in the New Millenium" CY - Berlin, BAM, Germany DA - 2000-05-22 PY - 2000 SP - 1(?) EP - 4(?) AN - OPUS4-1313 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Köppen, Robert A1 - Becker, Roland A1 - Emmerling, Franziska A1 - Jung, Christian A1 - Nehls, Irene T1 - HBCD enantiomers: absolute configurations and thermal rearrangement T2 - Organohalogen Compounds PY - 2006 UR - http://www.dioxin20xx.org/pdfs/2006/06-466.pdf VL - 68 SP - 1991 EP - 1994 PB - Norwegian Institute of Public Health AN - OPUS4-14540 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Esslinger, Susanne A1 - Becker, Roland A1 - Nehls, Irene T1 - HBCD isomers: degradation rates and hydroxylated products from microsome incubation experiments T2 - Dioxin 2010 - 30th International symposium on halogenated persistent organic pollutants CY - San Antonio, TX, USA DA - 2010-09-12 PY - 2010 UR - http://www.dioxin20xx.org/pdfs/2010/10-1113.pdf N1 - Serientitel: Organohalogen Compounds – Series title: Organohalogen Compounds VL - 72 SP - 259 EP - 262 AN - OPUS4-23168 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Köppen, Robert A1 - Becker, Roland A1 - Weber, M. A1 - Durmaz, V. A1 - Nehls, Irene T1 - HBCD stereoisomers: Thermal interconversion and enantiospecific trace analysis in biota T2 - DIOXIN 2008, 28th International Symposium on Halogenated Persistent Organic Pollutants (POPs) CY - Birmingham, UK DA - 2008-08-17 KW - HBCD KW - Stereoisomerie KW - Persistent Organic Pollutant KW - HPLC-MS PY - 2008 UR - http://www.dioxin20xx.org/pdfs/2008/08-819.pdf IS - Paper #154 SP - 1 EP - 4 AN - OPUS4-17842 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Walther, Wolfgang A1 - Becker, Roland A1 - Nehls, Irene A1 - Lehmann, Andreas A1 - Redlich, Christel A1 - Flemig, Sabine A1 - Dorgerloh, Ute A1 - Win, Tin A1 - Buge, Hans-Gerhard T1 - Pentchlorophenol (PCP) in Soil - Certified Reference Materials for Environmental Analysis T2 - Analytica Conference 2002 CY - Munich, Germany DA - 2002-04-23 PY - 2002 SP - 1(?) AN - OPUS4-1389 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weber, M. A1 - Durmaz, V. A1 - Becker, Roland A1 - Esslinger, Susanne T1 - Predictive identification of Pentabromocyclododecene (PBCD) isomers with high binding affinity to hTTR N2 - The binding affinities of the six main hexabromocyclododecane (HBCD) stereoisomers and all of their possible 48 allylic pentabromocyclododecene (PBCD) metabolites to the endocrinous human transthyretin receptor (hTTR) were investigated and compared to the natural binder thyroxine, and the two brominated diphenyl ethers BDE-47 and 3-hydroxy-BDE-47. The endocrine disrupting potency was approximated by a combination of two methods: a surface matching with the natural binder thyroxine (T4) followed by approximation of free binding energies for various binding modes within hTTR. The results indicate slightly higher binding affinities for both BDE structures than for T4 itself and similarly high affinities for two trans-configurated PBCD isomers. For many other PBCD isomers, intermediate values were computed, whereas all HBCD diastereomers yielded significantly lower binding affinities. T2 - Dioxin 2009 - 29th International symposium on halogenated persistent organic pollutants / Organohalogen compounds CY - Beijing, China DA - 2009-08-23 KW - Flammschutzmittel KW - Thyroxin KW - Molecular modeling PY - 2009 UR - http://www.dioxin20xx.org/pdfs/2009/09-54.pdf VL - 71 SP - 000247 EP - 000252 CY - Beijing, China AN - OPUS4-20980 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Scharf, Holger A1 - Becker, Roland A1 - Buge, Hans-Gerhard T1 - Soil Analysis - The BAM Proficiency Testing Scheme "Contaminated Sites" T2 - International ILAC/IAF Conference on Accreditation in Global Trade CY - Berlin, Germany DA - 2002-09-23 KW - Böden KW - Eignungsprüfung KW - Qualitätssicherung KW - Ringversuche KW - Umweltanalytik PY - 2002 AN - OPUS4-2361 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Buge, Hans-Gerhard A1 - Scharf, Holger A1 - Becker, Roland ED - Gills, T. T1 - Soil samples prepared for a proficiency testing scheme operated by BAM T2 - 8th International Symposium on Biological and Environmental Reference Materials ; 8th BERM CY - Bethesda, MD, USA DA - 2000-09-17 PY - 2001 SN - 1618-2642 VL - 370 IS - 2-3 SP - 174 PB - Springer CY - Berlin AN - OPUS4-944 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -