Umweltchemie und ?kotoxikologie in Deutschland Entwicklungstrend des Faches gemessen an der Publikationsproduktivit?t

Fragestellung Wie gestaltet und ggf. ver?ndert sich die wissenschaftliche Produktivit?t der Umweltchemie und ?kotoxikologie in Deutschland? So einfach die Frage klingt: Sie ist schwer zu beantworten, denn auf Fachgebieten, die per se interdisziplin?r sind, sind überlappungen zu Nachbargebieten die Regel und Abgrenzungen schwierig, zum Teil unm?glich, weil in der Literatur nicht erkennbar oder nicht erfasst. Umweltchemie und ?kotoxikologie sind oft „drin“, stehen aber nicht „drauf“ – auf den Institutsnamen, den Projekttiteln oder den Zeitschriftentiteln. Bei in hohem Ma?e interdisziplin?ren Arbeiten – Tendenz steigend – sind wir Wissenschaftler in manchen F?llen sogar selbst verlegen um eine abgrenzende Zuordnung oder empf?nden eine solche als inad?quat oder artifiziell. Ansatz Der Vorstand der Fachgruppe hat die bibliometrische Analyse anhand von Zeitschriftenstichproben als eine probate Herangehensweise für diese Frage gew?hlt. Nicht erfasst werden in einer solchen Stichprobe Arbeiten, die in Zeitschriften ver?ffentlicht wurden, die prim?r nicht der Umweltchemie oder ?kotoxikologie, sondern einem anderen Fach zugerechnet werden. Von der Analyse erfasst werden insbesondere aber die vielen umweltchemischen und ?kotoxikologischen Arbeiten von Wissenschaftlern, deren Arbeitsschwerpunkt in einem anderen Feld liegt und die nur gelegentlich auf unseren Gebieten arbeiten, gleich welche Berufs- und Institutsbezeichnung sie tragen m?gen. Diese Fehlerquelle zu vermeiden, erscheint für relative junge F?cher und stark interdisziplin?re Arbeitsgebiete priorit?r.     

Nitrated monoaromatic hydrocarbons (nitrophenols,nitrocatechols, nitrosalicylic acids) in ambient air: levels,mass size distributions and inhalation bioaccessibility

Environmental Science and Pollution Research - Nitrated monoaromatic hydrocarbons (NMAHs) are ubiquitous in the environment and an important part of atmospheric humic-like substances (HULIS) and...     

17th ICCE Satellite Event University Education in Environmental Sciences

Environmental Science and Pollution Research - Recently, nearly 500 study programmes related to environmental disciplines were detected in Europe (Lammel et al, Environ Sci Pollut Res 21:7211-7218...     

Global environmental cycling of γ-HCH and DDT in the 1980s – A study using a coupled atmosphere and ocean general circulation model

A coupled atmosphere–ocean general circulation model, ECHAM5-MPIOM, was used to study the multicompartmental cycling and long-range transport of persistent and semivolatile organics. Multiphase systems in air and ocean are covered by submodels for atmospheric aerosols, HAM, and marine biogeochemistry, HAMOCC5, respectively. The model, furthermore, encompasses 2D surface compartments, i.e. top soil, vegetation surfaces and sea-ice. The total environmental fate of γ-hexachlorocyclohexane (γ-HCH, lindane) and dichlorophenyltrichloroethane (DDT) in agriculture were studied.DDT is mostly present in the soils, the water-soluble γ-HCH in soils and ocean. DDT has the longest residence time in almost all compartments. Quasi-steady state with regard to substance accumulation is reached within a few years in air and vegetation surfaces. In seawater the partitioning to suspended and sinking particles contributes to the vertical transport of substances. On the global scale deep water formation is, however, found to be more efficient. Up to 30% of DDT but only less than 0.2% of γ-HCH in seawater are stored in particulate matter.On the time scale studied (1 decade) and on global scale substance transport in the environment is determined by the fast atmospheric circulation. The meridional transport mechanism, for both compounds, is significantly enhanced by multi-hopping. Net meridional transport in the ocean is effective only regionally, mostly by currents along the western boundaries of Africa and the Americas. The total environmental burdens of the substances experience a net northward migration from their source regions, which is more pronounced for DDT than for γ-HCH. Due to the application distribution, however, after 10 years of simulation 21% of the global environmental burden of γ-HCH and 12% of DDT have accumulated in the Arctic.     

Observation and origin of organochlorine compounds and polycyclic aromatic hydrocarbons in the free troposphere over central Europe

On Zugspitze (2670 m a.s.l.), Alps, higher concentrations were observed during a winter than during a summer measurement campaign of PAHs, chlorobenzenes (43.6 vs. 2.0 pg m⁻³) and DDTs (3.7 vs. 1.2 pg m⁻³), while hexachlorocyclohexanes and PCBs were found at similar levels. The PCB, HCH and DDT levels are among the lowest ever reported from outside the Arctic. Mostly lower levels were found in samples collected in summer than in winter despite a significant boundary layer air influence, but no such influence on samples collected during the winter campaign. Boundary layer influence was quantified by Lagrangian particle dispersion model retroplume analyses. Photochemical lifetimes corresponding to k_OH < 1.5 × 10⁻¹² cm³ molec⁻¹ s⁻¹ are found for p,p′-DDT, k_OH < 0.75 × 10⁻¹² cm³ molec⁻¹ s⁻¹ for p,p′-DDE and k_OH < 1.0 × 10⁻¹² cm³ molec⁻¹ s⁻¹ for p,p′-DDD.     

Polycyclic aromatic hydrocarbons in air on small spatial and temporal scales – I. Levels and variabilities

Polycyclic aromatic hydrocarbons (PAHs) were measured together with inorganic air pollutants at two urban sites and one rural background site in the Banja Luka area, Bosnia and Hercegovina, during 72 h in July 2008 using a high time resolution (5 samples per day) with the aim to study the spatial and temporal variabilities and to explore the significance of averaging effects inherent to 24 h-sampling. Measurement uncertainty was quantified on basis of three independent side-by-side samplers, deployed at one of the sites.PAH abundances in the urban and rural environments differed largely. Levels at the urban sites exceeded the levels at the rural site by >100%. The discrepancy was largely dominated by emission of 3–4 ring PAHs in the city, while 5–6 ring PAHs were more evenly distributed between city sites and the hill site. During the night a higher fraction of the semivolatile PAHs might have been stored in the soil or sorbed to surfaces. PAH patterns were undistinguishable across the three sites. However, concentrations of more particle-associated substances differed significantly between the urban sites than between one of the urban sites and the rural site (3σ uncertainty). Time-averaging (on a 24 h-basis) would have masked the significant inter-site differences of half of the substances which were found at different levels (on a 4 h-basis).