Photographer: Jan van Arkel

Mr R. (Rick) Helmus MSc

Laboratory Technician
  • Faculty of Science
    Institute for Biodiversity and Ecosystem Dynamics
  • Visiting address
    Science Park A
    Science Park 904  Room number: C3.222
  • Postal address:
    Postbus  94248
    1090 GE  Amsterdam
  • R.Helmus@uva.nl
    T: 0205256554

2017

  • Egea, T. C., da Silva, R., Boscolo, M., Rigonato, J., Monteiro, D. A., Grünig, D., ... Gomes, E. (2017). Diuron degradation by bacteria from soil of sugarcane crops. Heliyon, 3(12), e00471. DOI: 10.1016/j.heliyon.2017.e00471 
  • Gao, J., Jansen, B., Cerli, C., Helmus, R., Mikutta, R., Dultz, S., ... Kalbitz, K. (2017). Competition and surface conditioning alter the adsorption of phenolic and amino acids on soil minerals. European Journal of Soil Science, 68(5), 667-677. DOI: 10.1111/ejss.12459  [details] 
  • Sammut, G., Sinagra, E., Helmus, R., & de Voogt, P. (2017). Perfluoroalkyl substances in the Maltese Environment - (I) Surface water and rain water. Science of the Total Environment, 589, 182-190. DOI: 10.1016/j.scitotenv.2017.02.128  [details] 
  • Carboni, A., Helmus, R., Parsons, J. R., Kalbitz, K., & de Voogt, P. (2017). Incubation of solid state C60 fullerene under UV irradiation mimicking environmentally relevant conditions. Chemosphere, 175, 1-7. DOI: 10.1016/j.chemosphere.2017.01.149  [details] 
  • Gao, J., Jansen, B., Cerli, C., Helmus, R., Mikutta, R., Dultz, S., ... Kalbitz, K. (2017). Competition and surface conditioning effects alter the adsorption of phenolic acids and amino acids to model soil minerals, European Journal of Soil Science, 68, 667-677.
  • Ballesteros-Gómez, A., Ballesteros, J., Ortiz, X., Jonker, W., Helmus, R., Jobst, K. J., ... Reiner, E. J. (2017). Identification of Novel Brominated Compounds in Flame Retarded Plastics Containing TBBPA by Combining Isotope Pattern and Mass Defect Cluster Analysis. Environmental Science and Technology, 51(3), 1518–1526. DOI: 10.1021/acs.est.6b03294  [details] 

2016

  • Carboni, A., Helmus, R., Emke, E., van den Brink, N., Parsons, J. R., Kalbitz, K., & de Voogt, P. (2016). Analysis of fullerenes in soils samples collected in The Netherlands. Environmental Pollution, 219, 47-55. DOI: 10.1016/j.envpol.2016.09.034  [details] 
  • Gao, J., Helmus, R., Cerli, C., Jansen, B., Wang, X., & Kalbitz, K. (2016). Robust analysis of underivatized free amino acids in soil by hydrophilic interaction liquid chromatography coupled with electrospray tandem mass spectrometry. Journal of Chromatography A, 1449, 78-88. DOI: 10.1016/j.chroma.2016.04.071  [details] 
  • Carboni, A., Helmus, R., Parsons, J. R., Kalbitz, K., & de Voogt, P. (2016). A method for the determination of fullerenes in soil and sediment matrices using ultra-high performance liquid chromatography coupled with heated electrospray quadrupole time of flight mass spectrometry. Journal of Chromatography A, 1433, 123-130. DOI: 10.1016/j.chroma.2016.01.035  [details] 
  • Dimzon, I. K., Trier, X., Frömel, T., Helmus, R., Knepper, T. P., & de Voogt, P. (2016). High Resolution Mass Spectrometry of Polyfluorinated Polyether - based Formulation. Journal of the American Society for Mass Spectrometry, 27(2), 309-318. DOI: 10.1007/s13361-015-1269-9  [details] 

2015

  • Lavtižar, V., Helmus, R., Kools, S. A. E., Dolenc, D., van Gestel, C. A. M., Trebše, P., ... Kraak, M. H. S. (2015). Daphnid life cycle responses to the insecticide chlorantraniliprole and its transformation products. Environmental Science and Technology, 49(6), 3922-3929. DOI: 10.1021/es506007q  [details] 

2014

  • Jurgens, S. S., Helmus, R., Waaijers, S. L., Uittenbogaard, D., Dunnebier, D., Vleugel, M., ... Parsons, J. R. (2014). Mineralisation and primary biodegradation of aromatic organophosphorus flame retardants in activated sludge. Chemosphere, 111, 238-242. DOI: 10.1016/j.chemosphere.2014.04.016  [details] 

2013

  • Waaijers, S. L., Hartmann, J., Soeter, A. M., Helmus, R., Kools, S. A. E., de Voogt, P., ... Kraak, M. H. S. (2013). Toxicity of new generation flame retardants to Daphnia magna. Science of the Total Environment, 463-464, 1042-1048. DOI: 10.1016/j.scitotenv.2013.06.110  [details] 

2011

  • de Voogt, P., Emke, E., Helmus, R., Panteliadis, P., & van Leerdam, J. A. (2011). Determination of illicit drugs in the water cycle by LC-Orbitrap MS. In S. Castiglioni, E. Zuccato, & R. Fanelli (Eds.), Illicit drugs in the environment: occurrence, analysis, and fate using mass spectrometry (pp. 87-114). (Wiley-Interscience Series on Mass Spectrometry). New York: Wiley. DOI: 10.1002/9781118000816.ch5  [details] 

2011

  • van der Aa, M., Dijkman, E., van de Ven, B., Versteegh, A., Emke, E., Helmus, R., ... Hernández, F. (2011). Drugs en kalmeringsmiddelen in het oppervlaktewater. H2O, 44(14/15), 4-6. [details] 

2014

  • Jurgens, S., Waaijers, S. L., Helmus, R., Kraak, M. H. S., Admiraal, W., de Voogt, P., & Parsons, J. R. (2014). Mineralisation and biodegradation of aromatic organophosphorus flame retardants. Poster session presented at SETAC Europe 24th Annual Meeting, 11-15 May 2014, Basel, .

2013

  • Waaijers, S. L., Helmus, R., Jurgens, S., Kraak, M. H. S., Admiraal, W., de Voogt, P., & Parsons, J. R. (2013). Biodegradation of Organophosphorus Flame Retardants. 381. Poster session presented at SETAC Europe 23rd Annual Meeting, .

2012

  • Waaijers, S. L., Helmus, R., Blair, C., Parsons, J. R., Kraak, M. H. S., Admiraal, W., & de Voogt, P. (2012). Biodegradation of Halogen-Free Flame Retardants. Poster session presented at SETAC North America 33rd Annual Meeting, Long Beach, California, USA, November 2012, .
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  • No ancillary activities

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