TY - CONF A1 - Krüger, Rita T1 - New phenylenediamine antiozonants for commodities based on natural and synthetic rubber T2 - ILSI Europe 3rd International Food Packaging Symposium CY - Barcelona, Spain DA - 2004-11-17 PY - 2004 AN - OPUS4-4169 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Krüger, Rita A1 - Boissière, Claudia A1 - Klein-Hartwig, Karin A1 - Kretzschmar, Hans-Jürgen T1 - New phenylenediamine antiozonants for commodities based on natural and synthetic rubber KW - Food contact materials KW - Rubber KW - Antiozonants PY - 2005 UR - http://cat.inist.fr/?aModele=afficheN&cpsidt=17287242 SN - 0265-203X SN - 1464-5122 VL - 22 IS - 10 SP - 968 EP - 974 PB - Taylor & Francis CY - London AN - OPUS4-12301 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Just, Ulrich A1 - Jones, D.J. A1 - Krüger, Rita A1 - Davidson, G. A1 - Käppler, K. T1 - SFC/FTIR, SFC/APCI-MS and MALDI-TOF-MS for the analysis of siloxane-ethylene oxide copolymers N2 - Polydimethylsiloxanes (PDMSs) modified by introducing ethylene oxide units with the aim of forming sufficiently water-soluble siloxane compounds were characterized using supercritical fluid chromatography (SFC) coupled with Fourier transform infrared (FTIR) spectroscopy and atmospheric pressure chemical ionization mass spectrometry (APCI–MS), and matrix-assisted laser desorption–ionization time-of-flight mass spectrometry (MALDI–TOF-MS). SFC has a domain in analyzing oligomers. Hyphenated techniques enable elucidation of the components. Remarkable is the resolution and short analysis time of MALDI–TOF-MS. SFC also allows quantification of the basic and reaction products. PY - 2000 DO - https://doi.org/10.1016/S0165-022X(00)00077-4 SN - 0165-022x IS - 43 SP - 209 EP - 221 PB - Elsevier CY - Amsterdam AN - OPUS4-11336 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Krüger, Rita A1 - Klein-Hartwig, Karin A1 - Boissière, Claudia A1 - Kretzschmar, Hans-Jürgen T1 - Reduction of the emission of harmful substances from rubber based commodity articles T2 - 3rd RubberChem 2002 ; 3rd International Rubber Chemicals, Compounding and Mixing Conference CY - Munich, Germany DA - 2002-06-11 PY - 2002 SN - 978-1-85957-316-7 N1 - Geburtsname von Krüger, Rita: Auerbach, R. - Birth name of Krüger, Rita: Auerbach, R. SP - 51 EP - 57 PB - RAPRA Technology Ltd. CY - Shawbury AN - OPUS4-1451 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Koch, Matthias A1 - Bremser, Wolfram A1 - Köppen, Robert A1 - Krüger, Rita A1 - Rasenko, Tatjana A1 - Siegel, David A1 - Nehls, Irene T1 - Certification of reference materials for ochratoxin A analysis in coffee and wine N2 - Mycotoxins are important non-anthropogenic food and feed contaminants, which can be present on almost every agricultural commodity. Effective consumer protection therefore essentially depends on food surveillance by reliable quantitative analysis enabled by appropriate quality control. Certified (matrix) reference materials (CRMs) are versatile tools to support Quality assurance. However, in the case of ochratoxin A (OTA), a hepato- and nephrotoxic mycotoxin, which is regulated in various foods, there is a lack of suitable CRMs. This lack has now been overcome by the development of two European Reference Materials (ERM®) for the Determination of OTA in roasted coffee (ERM®-BD475) and red wine (ERM®-BD476). This article discusses the material preparation process as well as the results of homogeneity and stability testing. Furthermore, the results of the inhouse certification studies carried out at BAM Federal Institute for Materials Research and Testing are presented and discussed. Interlaboratory comparison studies involving selected expert laboratories with documented Expertise in the field of mycotoxin analysis were conducted to confirm the certified values determined by BAM. The certified ochratoxin A values and their corresponding expanded uncertainties (k = 2) were assigned in full compliance with the requirements of ISO Guide 35 and are as follows: (6.0 ± 0.6) µg kg-1 for roasted coffee, ERM®-BD475, and (0.52 ± 0.11) µg L-1 for red wine, ERM®-BD476. KW - OTA KW - Coffee KW - Wine KW - Food safety and quality KW - European reference materials KW - CRM PY - 2011 DO - https://doi.org/10.1007/s00769-011-0783-0 SN - 0949-1775 SN - 1432-0517 VL - 16 SP - 429 EP - 437 PB - Springer CY - Berlin AN - OPUS4-24235 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Rita T1 - Ochratoxin A (OTA) in Lebensmitteln T2 - GDCh-Jahrestagung der FG "Umweltchemie und Ökotoxikologie" CY - Halle (Saale), Germany DA - 2006-10-04 PY - 2006 AN - OPUS4-13513 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Rita T1 - Reference materials for Ochratoxin A in coffee T2 - 29. Mycotoxin-Workshop CY - Fellbach, Germany DA - 2007-05-14 PY - 2007 AN - OPUS4-14655 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Rita T1 - Vergleich interner Standards zur OTA-Bestimmung in Lebensmitteln T2 - 37. Deutscher Lebensmittelchemikertag CY - Kaiserslautern, Germany DA - 2008-09-08 PY - 2008 AN - OPUS4-17489 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Koch, Matthias A1 - Krüger, Rita A1 - Nehls, Irene T1 - Referenzmaterialien für Ochratoxin A in Kaffee und Wein KW - Ochratoxin A KW - Referenzmaterial KW - ERM KW - Kaffee KW - Wein PY - 2007 SN - 0937-1478 SN - 1521-3811 VL - 61 IS - 4 SP - 102 PB - Wiley-VCH Verl. CY - Weinheim AN - OPUS4-15723 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Krüger, Rita A1 - Koch, Matthias A1 - Nehls, Irene T1 - Ringversuch für Acrylamid, Theobromin und Coffein in Kakao KW - Ringversuch KW - Acrylamid KW - Theobromin KW - Coffein KW - Kakao PY - 2008 SN - 0937-1478 SN - 1521-3811 VL - 62 IS - 4 SP - 110 PB - Wiley-VCH Verl. CY - Weinheim AN - OPUS4-17848 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Rita A1 - Kelm, Jürgen A1 - Kretzschmar, Hans-Jürgen A1 - Schulze, Dietmar A1 - Trubiroha, Peter A1 - Weidner, Steffen T1 - Eine neue Klasse von Ozonschutzmitteln - verbesserter Ozonschutz durch teilweisen Einbau in die Polymermatrix T2 - IRC '03 ; International Rubber Conference 2003 ; Internationale Kautschuk-Tagung 2003 CY - Nürnberg, Deutschland DA - 2003-06-30 PY - 2003 SP - 139 EP - 142 PB - DKG, Dt. Kautschuk-Ges. CY - Frankfurt, Main AN - OPUS4-2608 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Krüger, Rita A1 - Kelm, Jürgen A1 - Kretzschmar, Hans-Jürgen A1 - Schulze, Dietmar A1 - Trubiroha, Peter A1 - Weidner, Steffen T1 - Polymergebundene Ozonschutzmittel - Die bessere Alternative N2 - Es wurde die Wirksamkeit von zwei neuen Klassen polymergebundener Alterungsschutzmittel (PAS) auf der Basis von N-substituierten p-Phenylendiamin PPD`s (Thioether und Sulfoxide) im Vergleich zu N-Phenyl-N'- (1,3-dimethylbutyl)-p-phenylendiamin (6PPD) in verschiedenen Alterungsbeanspruchungen an unterschiedlichen Elastomeren getestet, der chemische Einbau als Ursache für das günstigere Verhalten hinsichtlich der Minimierung der Rissbildung bei Ozoneinwirkung, Verfärbung und Kontaktverfärbung sowie der Bildung von primären aromatischen Aminen (PAA) analytisch nachgewiesen. PY - 2004 UR - http://www.plastverarbeiter.de/ai/resources/0987633eb37.pdf SN - 0948-3276 SN - 0022-9520 VL - 57 IS - 4 SP - 179 EP - 183 PB - Hüthig CY - Heidelberg AN - OPUS4-4712 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Rita T1 - Eine neue Klasse von Ozonschutzmitteln - verbesserter Ozonschutz durch teilweisen Einbau in die Polymermatrix T2 - IRC '03 CY - Nuremberg, Germany DA - 2003-06-30 PY - 2003 AN - OPUS4-4105 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -