Filtern
Erscheinungsjahr
Dokumenttyp
- Zeitschriftenartikel (38)
- Posterpräsentation (34)
- Vortrag (26)
- Beitrag zu einem Tagungsband (6)
- Forschungsbericht (1)
Sprache
- Deutsch (53)
- Englisch (51)
- Mehrsprachig (1)
Schlagworte
- AHTN (6)
- Arsenolipids (5)
- LA-ICP-MS (5)
- Umweltsimulation (5)
- ESI-MS/MS (4)
- GC-MS (4)
- Metformin (4)
- Warfarin (4)
- XRF (4)
- BFR (3)
Organisationseinheit der BAM
- 1 Analytische Chemie; Referenzmaterialien (29)
- 1.8 Umweltanalytik (29)
- 1.7 Organische Spuren- und Lebensmittelanalytik (13)
- 1.1 Anorganische Spurenanalytik (12)
- 1.4 Prozessanalytik (10)
- 4 Material und Umwelt (10)
- 4.1 Biologische Materialschädigung und Referenzorganismen (7)
- 4.2 Material-Mikrobiom Wechselwirkungen (7)
- 4.0 Abteilungsleitung und andere (4)
- 4.3 Schadstofftransfer und Umwelttechnologien (3)
Paper des Monats
- ja (1)
Eingeladener Vortrag
- nein (26)
A method for the determination of the novel brominated flame retardant tetrabromobisphenol A bis(2,3-dibromopropylether), 1,1'-(isopropylidene)bis[3,5-dibromo-4-(2,3-dibromo-propoxy)-benzene] (TBBPA-dbpe), was developed. Technical TBBPA-dbpe was purified and the results of a thorough physical characterisation are reported. The application of APCI-MS is discussed and the fragmentation patterns are described. Quantification of TBBPA-dbpe was done by HPLC-DAD using external calibration. The validation of the method was accomplished using sediment and sewage sludge samples spiked with defined amounts of authentic TBBPA-dbpe. The average recovery rates of TBBPA-dbpe from spiked samples ranged from 35 to 91% (sediment) and from 57 to 98% (sewage sludge) depending on the respective extraction method. Pressurised fluid extraction (PFE) and fluidised bed extraction were superior to classical Soxhlet and sonication procedures and yielded recovery rates between 90 and 98% with relative standard deviations of 2%. The limits of detection (DTC), identification (ID) and determination (DTM) using HPLC-DAD were 10, 21 and 30 ng g-1 in sediment and 22, 44 and 72 ng g-1 in sewage sludge, respectively.
LAS-Kalibrierstandards
(2007)
Arsenolipids represent a relevant step in the biosynthesis of organoarsenicals from inorganic arsenic compounds. Their fate after human consumption is still uncertain.
By means of a HPLC-ICP-MS/ESI-Q-TOF-MS method, 16 lipid soluble arsenic compounds, including seven formerly unknown organoarsenicals, have been identified in commercial herring fillet.
The structural assignment was done by exact mass and high resolution MS/MS data. This is the first identification of arsenolipids in herring (Clupea harengus). They contribute with (3.6±0.2) mg kg-1 arsenic to 62.3% of the total arsenic content of (5.7±0.3) mg of arsenic per kg dry mass. Current studies indicate that a metabolization by humans to cancerous dimethylarsinic acid is very likely. The presented results are highly relevant as herring is a very popular food fish species in Europe. Moreover, the screening of different fish species revealed that arsenolipids are more widespread than previously assumed.
A procedure has been developed for the determination of arsenobetaine in fish matrix by HPLC–ESI-MS/MS. Hereby (trimethylarsonium)-1,2-13C-acetate (arsenobetaine) is used as internal calibration standard. Arsenobetaine was determined in a fish material (Sea Bass) with an expanded uncertainty of 3.8%.