Low-Tech Water Wand Finds Contaminated Drinking WaterNews Type: State, Regional, Federal Source: The Water Network
Click here to read the article: https://thewaternetwork.com/_/rising-water-technologies/article-FfV/low-tech-water-wand-finds-contaminated-drinking-water-ddDEtJoYRPXDMuRc6yftYg
Municipal water can be contaminated by electronic waste and other sources of heavy metals—but collecting, chemically preserving and transporting samples to laboratories for testing is challenging for remote communities.
To streamline the process, Emily Hanhauser, a mechanical engineer at the Massachusetts Institute of Technology, and her colleagues created a low-tech sample-collection device that costs less than two dollars to make. It consists of a plastic handle tipped by propellerlike attachments made from polymer mesh, which contain small packets of absorbent resin beads that attract heavy metal ions. Users stir the device in water and then blot or air-dry it. Dunking the attachments in an acid solution releases the absorbed ions, which can then be measured.