Determination of Heavy Metals in a Highly Porous Sorptive Filter Material of Road Runoff Treatment Systems with LA-ICP-MS

H. Hilbig, M. Huber, A. Gmell, D. Heinz

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

To remove heavy metal contaminations from road runoff prior to discharge into surface water or groundwater, highly porous sorptive filter materials are used. One effective material is a technical product based on granular ferric hydroxide. To specify the removal mechanisms, lab-scale column experiments were performed preloading the material with Cd, Cu, Ni, Pb, and Zn. To identify removal mechanisms and the distribution of heavy metals in the material, investigations with scanning electron microscope (SEM)/energy-dispersive X-ray spectroscopy (EDX) and laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) were performed. With SEM/EDX, only Pb was detectable; all other heavy metals were not represented on the surface of the particles. To determine the intrusion of the metals, LA-ICP-MS was used. Thereby, the high porosity necessitated a special data evaluation that enabled the determination of the heavy metal removal and the leaching of other elements from the filter material as a function of depth. The measured depth profiles varied for each element and correlated with the metal mobility.

Original languageEnglish
Article number331
JournalWater, Air, and Soil Pollution
Volume228
Issue number9
DOIs
StatePublished - 1 Sep 2017

Keywords

  • Depth profile
  • Filter material
  • Heavy metals
  • LA-ICP-MS

Fingerprint

Dive into the research topics of 'Determination of Heavy Metals in a Highly Porous Sorptive Filter Material of Road Runoff Treatment Systems with LA-ICP-MS'. Together they form a unique fingerprint.

Cite this