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Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ

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How can you monitor or measure amount of chrome in water

We are running a water chrome mixture from a hot chrome bath through a cooling tower to make sure it doesn't get overheated. We want to make sure no chrome leaks into the cooling tower water. Is there a way I can monitor or measure if any chrome leaks into the cooling tower water. Is there any way I could measure the amount of chrome in cooling water that may have already leaked in.

Sarah Kamer
- Louisville, Kentucky, USA

A conductivity monitor is probably the most practical way to go. Chromic acid is highly conductive, pure water is not. As for looking for a past leak before you start, chromic acid has a nice thing going for it in that it is very visible. You'd very easily see it as a yellow to amber tint even down in the couple of ppm range.

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey

Best bet for the expected concentrations of Cr would be EPA 200.7, metals by ICP-AES.

James Totter, CEF
- Tallahassee, Florida

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