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Unread 01/09/2020, 01:25 PM   #1
joejvj
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Join Date: Jun 2005
Location: Asheville, NC
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Help with ICP-OES Analysis- Here are my results

Looking for some help in analyzing the results of my tank and RO water using ATI's ICP-OES testing.

Most elements are close to normal except very high silicone, both in my tank and RO water. Note that I don't have any visible diatoms in my tank and never a brown film on the glass. I'm wondering if ATI screwed up the test on this one, or do I have problem that needs to be corrected like maybe an additional anion resin bed.

A few other issues like low iodine and high potassium. Looking for comments from folks with good chemistry knowledge. Thanks.

http://www.joejaworski.com/Tank_Analysis.pdf

http://www.joejaworski.com/RO_Analysis.pdf


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Unread 01/09/2020, 11:50 PM   #2
bertoni
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I'm not sure why the silicon might be high. It might be a salt mix issue, or the testing might be in error. Silicon can encourage diatom and dinoflagellate growth, but you're not having a problem there. Silicate can make it though RO/DI, but I'd check the output with a test kit before making any assumptions or spending much money. Maybe someone local has a kit? That measurement is in the low ppm range.


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Unread 01/10/2020, 07:39 AM   #3
joejvj
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Pretty sure the silicon is coming in through my RO/DI, as it shows 5 ppm and the tank reads 2.4 ppm. I'm not sure silicon is the same as silicates.


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Unread 01/10/2020, 11:45 PM   #4
bertoni
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Silicon is an element (Si), and is a part of silicate, which is mostly SiO4-- in our case, I think. You might need a silica buster cartridge if you want to reduce the silicon level in the tank. The level you reported is rather high. I don't know that it would cause problems, though.


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Last edited by bertoni; 01/11/2020 at 12:08 AM.
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