TY - JOUR A1 - Nehls, Irene A1 - Hanebeck, Olaf A1 - Becker, Roland A1 - Emmerling, Franziska T1 - N-(beta-carboxyethyl)-alpha-isoleucine N2 - The title compound, {2-[(2-carbamoylethyl)amino]-3-methylpentanoic acid}, C9H18N2O3, is of interest with respect to its biological activity. It was formed during an addition reaction between acrylamide and the amino acid isoleucine. The crystal structure is a three-dimensional network built up by intermolecular N–H···O and O–H···N hydrogen bonds. KW - Acrylamid KW - Isoleucin KW - Derivatisierung PY - 2013 U6 - https://doi.org/10.1107/S160053681205146X SN - 1600-5368 VL - 69 IS - Part 2 SP - o172-o173, sup-1 - sup-7 PB - Munksgaard CY - Copenhagen AN - OPUS4-27573 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hanebeck, Olaf A1 - Nehls, Irene T1 - Bestimmung von Acrylamid in Wasser nach Derivatisierung T2 - Doktorandenseminar CY - Hohenroda, Germany DA - 2007-01-07 PY - 2007 AN - OPUS4-14448 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hanebeck, Olaf A1 - Nehls, Irene A1 - Panne, Ulrich T1 - Bestimmungsmethoden für Acrylamid in Wasser nach Derivatisierung T2 - ANAKON 2007 der GDCh CY - Jena, Germany DA - 2007-03-27 PY - 2007 AN - OPUS4-14599 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hanebeck, Olaf A1 - Philipp, Rosemarie A1 - Win, Tin A1 - Nehls, Irene T1 - Zertifizierte Referenzmaterialien für die Atemalkoholkontrolle T2 - ANAKON 2005 CY - Regensburg, Germany DA - 2005-03-15 PY - 2005 AN - OPUS4-5874 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Philipp, Rosemarie A1 - Hanebeck, Olaf A1 - Hein, Sebastian A1 - Bremser, Wolfram A1 - Win, Tin A1 - Nehls, Irene T1 - Ethanol/water solutions as certified reference materials for breath alcohol analyzer calibration N2 - The Federal Institute for Materials Research and Testing (BAM), Germany, has issued a series of large volume ethanol in water certified reference materials (CRMs), primarily developed for the calibration of evidential breath alcohol analyzers in Germany. The certified parameter is the ethanol mass concentration at 20 °C. When used in a wet bath simulator, the solutions deliver gas samples that meet the requirements set by the Organization of Legal Metrology for calibration of breathalyzers. The materials were prepared gravimetrically by spiking of ethanol into water in single 5 L units. A complete uncertainty budget for the preparation process has been established. The purity of the commercial ethanol stock solution was identified to be the main source of uncertainty. For stability and homogeneity measurements and for the verification of the gravimetric mass concentration of the CRMs, a robust high-precision gas chromatography, with flame-ionization detection method for ethanol determination in aqueous samples was developed and validated. The good performance of this method has been demonstrated in several international comparisons organized by the Consultative Committee for Amount of Substance-Metrology in Chemistry at the International Bureau of Weights and Measures. KW - Certified reference material KW - Ethanol in water KW - Breath alcohol KW - GC-FID PY - 2010 U6 - https://doi.org/10.1007/s00769-009-0605-9 SN - 0949-1775 SN - 1432-0517 VL - 15 IS - 3 SP - 141 EP - 146 PB - Springer CY - Berlin AN - OPUS4-20999 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -