Description of the Interactive Tool
The experiment described in this article is based in magnetite (Fe3O4) and its utility in adsorbing high concentrations of arsenic in contaminated water. The magnetic properties of the material allow for simple dispersion and removal from an aqueous system. The inquiry-based laboratory activity, illustrates these unique properties of magnetite nanoparticles while developing cross-disciplinary and critical-thinking skills.
The activity is based on a scenario in which a water treatment facility was concerned with arsenic in the source groundwater .
The experiment has been tested to college student and is suitable to Introductory Chemistry, Analytical Chemistry and Environmental Chemistry. The lab experience exposes students to experimental
design, environmental remediation, adsorption, and the surface area-to-volume ratio concept of nanotechnology while it can be used to introduce students to spectroscopy if a flame atomic absorption (AA) equipment is available.

Points of Strength
This laboratory activity can be easily incorporated in the curriculum of a tertiary institute and the supporting information of the article is very detailed and it contains a laboratory student handout, a remediation problem scenario, a teaching guide as well as a teacher’s copy of key questions with answers.