Steffen Nielsen

Selective flow-injection quantification of ultra-trace amounts of Cr(VI) via on-line complexation and preconcentration with APDC followed by determination by electrothermal atomic absorption spectrometry1This work was presented at Flow Analysis VII, Piracicaba, Brazil, August 25–28, 1997.1

Steffen Nielsen, Elo Harald Hansen · Analytica Chimica Acta · 1998 · 76 citations

Chemical Engineering, Environmental Chemistry, Engineering +14

High resolution inductively coupled plasma mass spectrometry for the trace determination of plutonium isotopes and isotope ratios in environmental samples

Stefan Stürup, H. Dahlgaard, Steffen Nielsen · Journal of Analytical Atomic Spectrometry · 1998 · 74 citations

High Resolution, Engineering, Nuclear Physics +23

Determination of As(III) and As(V) by flow injection-hydride generation-atomic absorption spectrometry via on-line reduction of As(V) by KI

Steffen Nielsen, Elo Harald Hansen · Analytica Chimica Acta · 1997 · 54 citations

Chemical Engineering, On-line Reduction, Engineering +11

Interfacing flow injection analysis (sequential injection analysis) and electro-thermal atomic absorption spectrometry determination of trace-levels of Cr(VI) via on-line pre-concentration by adsorption in a knotted reactor and by liquid–liquid extraction

Steffen Nielsen, Elo Harald Hansen · Analytica Chimica Acta · 2000 · 51 citations

Solvent Extraction, Chemical Engineering, Engineering +8

Determination of ultra-trace amounts of arsenic(III) by flow-injection hydride generation atomic absorption spectrometry with on-line preconcentration by coprecipitation with lanthanum hydroxide or hafnium hydroxide

Steffen Nielsen, Jens J. Sloth, Elo Harald Hansen · Talanta · 1996 · 50 citations

Environmental Chemistry, Chemical Engineering, Engineering +13