The tiny hairs on the "nano-velcro" particles trap heavy metal ions in their grasp allowing the level of pollution to be calculated with a voltage-measuring device (Image: Northwestern University)
While progress has been made in reducing the amount of heavy metal pollution, the very nature of heavy metal contamination means it continues to be a problem in waterways around the world. Conventional heavy metal contamination detection methods require sending samples off to a lab for analysis on expensive equipment. Now a Swiss-American team has developed a cheap way to immediately ascertain the levels of heavy metals in lakes and rivers and the fish pulled out of them.
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