Collecting water sample for analysis of mineral particles (colloids)
![Mineral particles (colloids)](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/sampling_colloids_animas_r_l.jpg?itok=NebX7Lvd)
Detailed Description
A USGS scientist collects a water sample for analysis of mineral particles known as colloids. Toxic metals (such as copper in excess) bind to the particles, which are then ingested by aquatic animals.
Sources/Usage
Public Domain.