| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| Ag8n | "There are a few " killers" in the referenced article. One was the remark about converting arsenic to volatile hydrides. One of those hydrides cou..." | Read more » | over 6 years ago | |||
| zengirl2 | "For a project I was looking at toxins in water and read about sunflower stalks being used for this purpose. There was even a startup in NJ, but not..." | Read more » | almost 7 years ago | |||
| gretchengehrke | "Hmm. This is surprising to me too. Iron-rich clay can readily adsorb arsenic under oxygen-rich conditions (this is actually the root of Bangladesh,..." | Read more » | almost 7 years ago | |||
| stevie | "interesting! I've seen people using clay to filter water in Nicaragua, but I don't have an understanding of how that worked. " | Read more » | almost 7 years ago | |||
| Ag8n | "I'm very surprised. I've spent many hours analyzing incoming raw material ( often times clays) usually for heavy metals. Clays are often the sour..." | Read more » | almost 7 years ago | |||
| warren | "Pasting in comments from the plots-waterquality list -- There's arsenic in some Somerville soil -- especially at the Kiley Barrel site right near ..." | Read more » | about 10 years ago | |||
| ronhuber | "I think those cheap riffle crickets would be great! Can we set a time and date to meet and test deploy one or more? One assumes the 'seeps' w..." | Read more » | over 10 years ago | |||
| warren | "@donblair - is there a way we could use multiple riffle "crickets" to look at where point sources of heavy metal pollution are? Or some other way w..." | Read more » | over 10 years ago | |||
| warren | "Note that the above spike is not even in the UV range -- it's around the color green, which we could easily pick out with the basic spectrometers w..." | Read more » | about 13 years ago |