TY - JOUR A1 - Köppen, Robert A1 - Koch, Matthias A1 - Nehls, Irene T1 - Überwachung pflanzlicher Rohstoffe - Trichothecen-Analytik in Getreide und Getreideerzeugnissen JF - Deutsche Lebensmittel-Rundschau PY - 2010 SN - 0012-0413 SN - 1869-2214 VL - 106 IS - DLR Spezial 2 SP - 66 EP - 72A PB - Wiss. Verl.-Ges. CY - Stuttgart AN - OPUS4-22206 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nehls, Irene A1 - Schultze, Karin A1 - Win, Tin A1 - Becker, Roland A1 - Bremser, Wolfram T1 - Zertifiziertes Referenzmaterial: BAM-U007 Organochlorpestizide in Boden T2 - Tag der Chemie, TU Berlin T2 - Tag der Chemie, TU Berlin CY - Berlin, Germany DA - 2002-12-04 PY - 2002 AN - OPUS4-5847 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nehls, Irene A1 - Win, Tin A1 - Schultze, Karin A1 - Bremser, Wolfram T1 - Zertifiziertes Referenzmaterial "BAM-U007" - Organochlorpestizide in Boden T2 - "Tag der Chemie", FU Berlin T2 - "Tag der Chemie", FU Berlin CY - Berlin, Germany DA - 2001-11-07 PY - 2001 AN - OPUS4-5831 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schultze, Karin A1 - Nehls, Irene A1 - Bremser, Wolfram A1 - Becker, Roland A1 - Win, Tin T1 - Zertifiziertes Referenzmaterial "BAM-U007" - Organochlorpestizide in Boden T2 - Proceedings of the conference ANAKON T2 - ANAKON 2001 CY - Konstanz, Germany DA - 2001-04-04 PY - 2001 SP - 1(?) AN - OPUS4-1314 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Nehls, Irene A1 - Koch, Matthias T1 - Zertifizierte Referenzmaterialien für die Mineralölanalytik - Bedeutung für die Kalibrierung JF - GIT : Labor-Fachzeitschrift KW - Referenzmaterialien PY - 2008 SN - 0016-3538 VL - 8 SP - 718 EP - 719 PB - GIT-Verlag CY - Darmstadt AN - OPUS4-17815 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Siegel, David A1 - Koch, Matthias A1 - Nehls, Irene T1 - Wiederentdeckung eines alten Bekannten - 2,4-Dinitrophenylhydrazin in der Umweltanalytik JF - GIT : Labor-Fachzeitschrift KW - Carbonyle KW - Derivatisierung KW - 2,4-Dinitrophenylhydrazin KW - Luft KW - Trinkwasser KW - PET PY - 2009 SN - 0016-3538 IS - Sonderausgabe: Umweltanalytik 2008 SP - 226 EP - 228 PB - GIT-Verlag CY - Darmstadt AN - OPUS4-18615 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Dorgerloh, Ute A1 - Becker, Roland A1 - Nehls, Irene T1 - Volatile hydrocarbons in contaminated soil: Robustness of fractional quantification using headspace gas chromatography-mass-spectrometry JF - Soil and sediment contamination N2 - Fuel contamination of soils display complex and variable hydrocarbon mixtures with different volatility and toxicity characteristics. A recently suggested headspace procedure for the structure-based quantification of volatile hydrocarbons is evaluated regarding repeatability, reproducibility, and practical robustness. Three aliphatic and three aromatic fractions covering the boiling range between 69 and 216°C were defined as summation parameters by their respective equivalent carbon number ranges. A standard mixture of 35 aliphatic and aromatic hydrocarbons was used for calibration on basis of selected mass fragments specific for the aliphatics and aromatics, respectively. Two standard soils were fortified with the standard mixture or different fuels, respectively, and submitted to the analytical procedure. Limit of detection (LOD) and limit of quantification (LOQ) were for all fractions lower than 0.1 and 0.3 mg/kg, respectively. Analyte recovery was linear up to between 20 and 110 mg hydrocarbons/kg soil depending on the fraction. Hydrocarbon recovery ranged between 80% and 110% depending on the fraction and the repeatability was typically better than 10%. Finally, the impact of extraction solvent variation, column solid-phase polarity, and alternative summation of fractions were investigated. The procedure was applied to liner samples taken from a site contaminated with aviation fuel and its practicability is discussed. KW - Gasoline KW - Contaminated site KW - Equivalent carbon number KW - Fuel KW - Static headspace PY - 2018 DO - https://doi.org/10.1080/15320383.2018.1418287 SN - 1532-0383 SN - 1549-7887 VL - 27 IS - 1 SP - 1 EP - 12 PB - Taylor & Francis AN - OPUS4-43889 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nehls, Irene A1 - Kuhnhardt, Claus T1 - Untersuchungen zur Homogenität und Stabilität von Referenzmaterialien zur Bestimmung von Schwefel in der Matrix Öl T2 - DGMK-Analytikertreffen T2 - DGMK-Analytikertreffen 2000 CY - Hamburg, Deutschland DA - 2000-11-13 PY - 2000 CY - Hamburg AN - OPUS4-1030 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Kuhlich, Paul A1 - Göstl, Robert A1 - Teichert, Philip A1 - Piechotta, Christian A1 - Nehls, Irene T1 - Transformations of polycyclic musks AHTN and HHCB upon disinfection with hypochlorite: two new chlorinated disinfection by-products (CDBP) of AHTN and a possible source for HHCB-lactone JF - Analytical and bioanalytical chemistry N2 - In this work, the behavior of the polycyclic musks 6-acetyl-1,1,2,4,4,7-hexamethyltetraline (AHTN) and 1,3,4,6,7,8-hexahydro-4,6,6,7,8,8-hexamethylcyclopenta- γ-2-benzopyran (HHCB) was investigated upon disinfection by using sodium hypochlorite as disinfectant in a model disinfection basin in order to find new disinfection byproducts (DBP). In the case of AHTN, the carboxylic acid 3,5,5,6,8,8-hexamethyl-5,6,7,8-tetrahydronaphthalene-2- carboxylic acid (AHTN-COOH) was generated by a haloform reaction, being the origin for two new chlorinated DBPs. In the case of HHCB, disinfection via hypochlorite led to the HHCB-lactone. All reaction products and intermediates were synthesized and isolated. The relevant degradation mechanisms are discussed in detail. KW - Musk KW - AHTN KW - HHCB KW - HHCB-lactone KW - Chlorination KW - Disinfection PY - 2011 DO - https://doi.org/10.1007/s00216-011-4674-3 SN - 1618-2642 SN - 1618-2650 VL - 399 IS - 10 SP - 3579 EP - 3588 PB - Springer CY - Berlin AN - OPUS4-23622 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Esslinger, Susanne A1 - Becker, Roland A1 - Jung, Christian A1 - Schröter-Kermani, C. A1 - Nehls, Irene T1 - Time courses of HBCD levels and enantiomeric signatures in herring gull eggs from the German coast T2 - Dioxin 2010 - 30th International symposium on halogenated persistent organic pollutants (Proceedings) 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/2010/10-1112.pdf N1 - Serientitel: Organohalogen Compounds – Series title: Organohalogen Compounds VL - 72 SP - 255 EP - 258 AN - OPUS4-23167 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -