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Spatial heterogeneity in the structure of the planktonic food web in the North Sea
- K. Richardson, T. Nielsen, F. Pedersen, J. Heilmann, Bo Løkkegaard, H. Kaas
- Environmental Science
- 9 July 1998
The distributions of bacteria, phytoplankton, protozooplankton and copepod biomass and activity were examined in relation to hydrographic characteristics of the water column on 2 cruises in the North…
Annual distribution and activity of phytoplankton in the Skagerrak/ Kattegat frontal region
- J. Heilmann, K. Richardson, G. Ærtebjerg
- Environmental Science
- 1994
TLDR
Primary production in the Kattegat: Past and present
- K. Richardson, J. Heilmann
- Environmental Science
- 1 February 1995
TLDR
Global occurrence and heterogeneity of the Roseobacter-clade species Ruegeria mobilis
- Eva C. Sonnenschein, K. Nielsen, L. Gram
- BiologyThe ISME Journal
- 1 February 2017
TLDR
Development of an isotope dilution laser ablation ICP-MS method for multi-element determination in crude and fuel oil samples
- J. Heilmann, S. Boulyga, K. Heumann
- Chemistry
- 24 March 2009
An inductively coupled plasma isotope dilution mass spectrometric (ICP-IDMS) method with direct introduction of the isotope-diluted sample into the plasma by laser ablation was developed for…
The spawning of plaice Pleuronectes platessa in the Kattegat
- Else Nielsen, J. Støttrup, J. Heilmann, B. MacKenzie
- Environmental Science
- 1 May 2004
Isotope dilution ICP-MS with laser-assisted sample introduction for direct determination of sulfur in petroleum products
- S. Boulyga, J. Heilmann, K. Heumann
- ChemistryAnalytical and bioanalytical chemistry
- 29 July 2005
TLDR
Development of a species-unspecific isotope dilution GC-ICPMS method for possible routine quantification of sulfur species in petroleum products.
- J. Heilmann, K. Heumann
- Chemistry, Environmental ScienceAnalytical chemistry
- 20 February 2008
TLDR
Accurate determination of sulfur in gasoline and related fuel samples using isotope dilution ICP–MS with direct sample injection and microwave-assisted digestion
- J. Heilmann, S. Boulyga, K. Heumann
- ChemistryAnalytical and bioanalytical chemistry
- 30 June 2004
TLDR
Development of an accurate, sensitive, and robust isotope dilution laser ablation ICP-MS method for simultaneous multi-element analysis (chlorine, sulfur, and heavy metals) in coal samples
- S. Boulyga, J. Heilmann, T. Prohaska, K. Heumann
- ChemistryAnalytical and bioanalytical chemistry
- 25 July 2007
TLDR
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